Version: 1.14.0

Abstract Interface: Chain<F extends `ChainFamily` = `ChainFamily`>

Defined in: chain.ts:873

Works like an interface for a base Chain class, but provides implementation (which can be specialized) for some basic methods

Extended by

Type Parameters

Type Parameter	Default type
`F` extends `ChainFamily`	`ChainFamily`

Indexable

[key: symbol]: () => string

Properties

abort

readonly abort: AbortSignal

Defined in: chain.ts:890

Fires when the chain should tear down: either Chain.destroy was called, or the ChainContext abort signal fired. Listeners registered with { once: true } therefore self-unregister on whichever condition happens first, so no listener ever outlives its chain on a long-lived context.

apiClient

readonly apiClient: CCIPAPIClient | null

Defined in: chain.ts:877

CCIP API client (null if opted out)

apiRetryConfig

readonly apiRetryConfig: Required<ApiRetryConfig> | null

Defined in: chain.ts:879

Retry configuration for API fallback operations (null if API client is disabled)

destroy

destroy: (reason?: unknown) => void

Defined in: chain.ts:942

Cleanup method to release resources (e.g., close connections).

Parameters

Parameter	Type
`reason?`	`unknown`

Returns

void

logger

logger: Logger

Defined in: chain.ts:875

network

readonly network: NetworkInfo<F>

Defined in: chain.ts:874

verificationsIndexer?

readonly optional verificationsIndexer?: readonly string[]

Defined in: chain.ts:881

Default CCIP v2 indexer base URLs for getVerifications (undefined → network defaults)

verifierTransport?

readonly optional verifierTransport?: VerifierTransport

Defined in: chain.ts:883

Transport for direct verifier reads (undefined → grpc-web over fetch)

Methods

estimateReceiveExecution()?

optional estimateReceiveExecution(opts: { message: Omit<EstimateMessageInput, "onRampAddress" | "offRampAddress">; offRamp: string; } | { messageId: string; }): Promise<number>

Defined in: chain.ts:2657

Estimate ccipReceive execution cost (gas, computeUnits) for this destination chain.

Parameters

Parameter	Type	Description
`opts`	{ `message`: `Omit`<`EstimateMessageInput`, `"onRampAddress"` \| `"offRampAddress"`>; `offRamp`: `string`; } \| { `messageId`: `string`; }	Either: - `{ offRamp, message }` — estimate from message fields directly. `message` must include `sourceChainSelector`, `messageId`, `receiver`, and optionally `sender`, `data`, `destTokenAmounts`. - `{ messageId }` — fetch the message from the CCIP API via `getMessageById`, resolve the offRamp from the message metadata or `getExecutionInput`, then estimate. Requires `apiClient` to be available.

Returns

Promise<number>

Estimated execution cost (gas for EVM, compute units for Solana)

execute()

abstract execute(opts: ExecuteOpts & { wallet: unknown; }): Promise<CCIPExecution>

Defined in: chain.ts:1899

Execute messages in report in an offRamp.

Parameters

Parameter	Type	Description
`opts`	`ExecuteOpts` & { `wallet`: `unknown`; }	ExecuteOpts with chain-specific wallet to sign and send tx.

Returns

Promise<CCIPExecution>

Promise resolving to transaction of the execution.

Throws

CCIPWalletNotSignerError if wallet is not a valid signer.

Throws

CCIPExecTxNotConfirmedError if execution transaction fails to confirm.

Throws

CCIPExecTxRevertedError if execution transaction reverts.

Throws

CCIPMerkleRootMismatchError if merkle proof is invalid.

Examples

Manual execution using message ID (simplified, requires API)

TypeScript

const receipt = await dest.execute({ messageId: '0x...', wallet })

Manual execution using transaction hash

TypeScript

const input = await source.getExecutionInput({ request, verifications })
const receipt = await dest.execute({ offRamp, input, wallet })

fetchCCVResults()

protected fetchCCVResults(messageId: string, policy: VerificationPolicy, opts: { indexer?: NetworkType | readonly string[]; offRamp: string; request: { lane: { destChainSelector: bigint; onRamp: string; sourceChainSelector: bigint; version: CCIPVersion; }; log: { blockTimestamp: number; }; message: { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; }; }; } & VerificationSourcesOpts & Pick<LogFilter, "startBlock" | "watch" | "page">): Promise<VerifierResult[]>

Defined in: chain.ts:1983

Collect a CCIP v2.0 message's CCV results against the destination policy, from every source: opts.ccvData, then the CCIP API raced against the indexers, then opts.verifiers (read via ChainContext.verifierTransport). For families' getVerifications implementations.

Parameters

Parameter	Type	Description
`messageId`	`string`	The message id
`policy`	`VerificationPolicy`	This destination's CCV policy for the message
`opts`	{ `indexer?`: `NetworkType` \| readonly `string`[]; `offRamp`: `string`; `request`: { `lane`: { `destChainSelector`: `bigint`; `onRamp`: `string`; `sourceChainSelector`: `bigint`; `version`: `CCIPVersion`; }; `log`: { `blockTimestamp`: `number`; }; `message`: { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; }; }; } & `VerificationSourcesOpts` & `Pick`<`LogFilter`, `"startBlock"` \| `"watch"` \| `"page"`>	The `getVerifications` options

Returns

Promise<VerifierResult[]>

The results covering policy

Throws

CCIPMessageNotVerifiedYetError if the sources can't cover policy

generateUnsignedExecute()

abstract generateUnsignedExecute(opts: ExecuteOpts & { payer: string; }): Promise<UnsignedTx[F]>

Defined in: chain.ts:1871

Generate unsigned tx to manuallyExecute a message.

Parameters

Parameter	Type	Description
`opts`	`ExecuteOpts` & { `payer`: `string`; }	ExecuteOpts with payer address which will send the exec tx

Returns

Promise<UnsignedTx[F]>

Promise resolving to chain-family specific unsigned txs

Example

Generate unsigned execution tx

TypeScript

const unsignedTx = await dest.generateUnsignedExecute({
  offRamp: offRampAddress,
  input,
  payer: walletAddress,
})
// Sign and send with external wallet

generateUnsignedSendMessage()

abstract generateUnsignedSendMessage(opts: SendMessageOpts & { sender: string; }): Promise<UnsignedTx[F]>

Defined in: chain.ts:1681

Generate unsigned txs for ccipSend'ing a message.

Parameters

Parameter	Type	Description
`opts`	`SendMessageOpts` & { `sender`: `string`; }	SendMessageOpts with sender address

Returns

Promise<UnsignedTx[F]>

Promise resolving to chain-family specific unsigned txs

Example

Generate unsigned transaction

TypeScript

const unsignedTx = await chain.generateUnsignedSendMessage({
  router: routerAddress,
  destChainSelector: destSelector,
  message: { receiver: '0x...', data: '0x1337' },
  sender: walletAddress,
})
// Sign and send with external wallet

getBalance()

abstract getBalance(opts: GetBalanceOpts): Promise<bigint>

Defined in: chain.ts:1495

Query token balance for an address.

Parameters

Parameter	Type	Description
`opts`	`GetBalanceOpts`	Balance query options

Returns

Promise<bigint>

Token balance information including raw and formatted values

Throws

CCIPNotImplementedError if chain family doesn't support this method

Examples

Query native token balance

TypeScript

const balance = await chain.getBalance({ holder: '0x123...' })
console.log(`Native balance: ${balance}`) // balance in wei

Query ERC20 token balance

TypeScript

const balance = await chain.getBalance({
  holder: '0x123...',
  token: '0xLINK...'
})
console.log(`LINK balance: ${balance}`) // balance in smallest units

getBlockInfo()

abstract getBlockInfo(block: number | bigint | "finalized" | "latest"): Promise<BlockInfo>

Defined in: chain.ts:963

Fetch info (number and timestamp) for a given block or finality tag.

Parameters

Parameter	Type	Description
`block`	`number` \| `bigint` \| `"finalized"` \| `"latest"`	Block number, or tag like `'finalized'` or `'latest'`

Returns

Promise<BlockInfo>

Block info with number and timestamp

Throws

CCIPBlockNotFoundError if block does not exist

Example

Get finalized block info

TypeScript

const chain = await EVMChain.fromUrl('https://eth-mainnet.example.com')
const info = await chain.getBlockInfo('finalized')
console.log(`Finalized block ${info.number} at ${new Date(info.timestamp * 1000).toISOString()}`)

getBlockTimestamp()

getBlockTimestamp(block: number | bigint | "finalized" | "latest"): Promise<number>

Defined in: chain.ts:971

Fetch the timestamp of a given block.

Parameters

Parameter	Type	Description
`block`	`number` \| `bigint` \| `"finalized"` \| `"latest"`	Block number or finality tag

Returns

Promise<number>

Unix timestamp in seconds

Deprecated

Use Chain.getBlockInfo instead.

getExecutionInput()

getExecutionInput(opts: { request: CCIPRequest; verifications: CCIPVerifications; } & Pick<LogFilter, "page">): Promise<ExecutionInput>

Defined in: chain.ts:1240

Fetch input data needed for executing messages Should be called on the source instance

Parameters

Parameter	Type	Description
`opts`	{ `request`: `CCIPRequest`; `verifications`: `CCIPVerifications`; } & `Pick`<`LogFilter`, `"page"`>	getExecutionInput options containing request and verifications

Returns

Promise<ExecutionInput>

input payload to be passed to execute

See

execute - method to execute a message

getExecutionReceipts()

getExecutionReceipts(opts: { messageId?: string; offRamp: string; sequenceNumber?: bigint; sourceChainSelector?: bigint; verifications?: CCIPVerifications; } & Pick<LogFilter, "startBlock" | "startTime" | "watch" | "page" | "since">): AsyncIterableIterator<CCIPExecution>

Defined in: chain.ts:2160

Default/generic implementation of getExecutionReceipts. Yields execution receipts for a given offRamp.

Parameters

Parameter	Type	Description
`opts`	{ `messageId?`: `string`; `offRamp`: `string`; `sequenceNumber?`: `bigint`; `sourceChainSelector?`: `bigint`; `verifications?`: `CCIPVerifications`; } & `Pick`<`LogFilter`, `"startBlock"` \| `"startTime"` \| `"watch"` \| `"page"` \| `"since"`>	getExecutionReceipts options

Returns

AsyncIterableIterator<CCIPExecution>

Async generator of CCIPExecution receipts

Example

Watch for execution receipts

TypeScript

for await (const exec of dest.getExecutionReceipts({
  offRamp: offRampAddress,
  messageId: request.message.messageId,
  startBlock: commit.log.blockNumber,
})) {
  console.log(`State: ${exec.receipt.state}`)
  if (exec.receipt.state === ExecutionState.Success) break
}

getFee()

abstract getFee(opts: Omit<SendMessageOpts, "approveMax">): Promise<bigint>

Defined in: chain.ts:1663

Fetch the current fee for a given intended message.

Parameters

Parameter	Type	Description
`opts`	`Omit`<`SendMessageOpts`, `"approveMax"`>	SendMessageOpts without approveMax

Returns

Promise<bigint>

Fee amount in the feeToken's smallest units

Example

Calculate message fee

TypeScript

const fee = await chain.getFee({
  router: routerAddress,
  destChainSelector: destSelector,
  message: { receiver: '0x...', data: '0x' },
})
console.log(`Fee: ${fee} wei`)

getFeeTokens()

abstract getFeeTokens(router: string): Promise<Record<string, TokenInfo>>

Defined in: chain.ts:2465

Fetch list and info of supported feeTokens.

Parameters

Parameter	Type	Description
`router`	`string`	Router address on this chain

Returns

Promise<Record<string, TokenInfo>>

Promise resolving to mapping of token addresses to TokenInfo objects

Example

Get available fee tokens

TypeScript

const feeTokens = await chain.getFeeTokens(routerAddress)
for (const [addr, info] of Object.entries(feeTokens)) {
  console.log(`${info.symbol}: ${addr}`)
}

getLaneFeatures()

getLaneFeatures(opts: { destChainSelector: bigint; router: string; token?: string; }): Promise<Partial<LaneFeatures>>

Defined in: chain.ts:2089

Retrieve features for a lane (router/destChainSelector/token triplet).

Parameters

Parameter	Type
`opts`	{ `destChainSelector`: `bigint`; `router`: `string`; `token?`: `string`; }
`opts.destChainSelector`	`bigint`
`opts.router`	`string`
`opts.token?`	`string`

Returns

Promise<Partial<LaneFeatures>>

Promise resolving to partial lane features record

Throws

CCIPNotImplementedError if not implemented for this chain family

Example

Get lane features

TypeScript

const features = await chain.getLaneFeatures({
  router: '0x...',
  destChainSelector: 4949039107694359620n,
})
// FINALITY_FAST has three states:
// - undefined: FTF is not supported on this lane (pre-v2.0)
// - 0: the lane supports FTF, but it is not enabled for this token
// - > 0: FTF is enabled with this many block confirmations
const ftf = features[LaneFeature.FINALITY_FAST]
if (ftf != null && ftf > 0) {
  console.log(`FTF enabled with ${ftf} block confirmations`)
} else if (ftf === 0) {
  console.log('FTF supported on this lane but not enabled for this token')
}

getLaneLatency()

getLaneLatency(destChainSelector: bigint, numberOfBlocks?: number): Promise<LaneLatencyResponse>

Defined in: chain.ts:2048

Fetches estimated lane latency to a destination chain. Uses this chain's selector as the source.

Parameters

Parameter	Type	Description
`destChainSelector`	`bigint`	Destination CCIP chain selector (bigint)
`numberOfBlocks?`	`number`	Optional number of block confirmations to use for latency calculation. When omitted or 0, uses the lane's default finality. When provided as a positive integer, the API returns latency for that custom finality value.

Returns

Promise<LaneLatencyResponse>

Promise resolving to LaneLatencyResponse containing:

totalMs - Estimated delivery time in milliseconds

Throws

CCIPApiClientNotAvailableError if apiClient was disabled (set to null)

Throws

CCIPLaneLatencyInsufficientDataError if the API has too little history for the lane

Throws

CCIPHttpError if API request fails (network error, 4xx, 5xx status)

Remarks

Each call makes a fresh API request. Consider caching results if making frequent calls for the same lane.

Examples

Get estimated delivery time

TypeScript

const chain = await EVMChain.fromUrl('https://eth-mainnet.example.com')
try {
  const latency = await chain.getLaneLatency(4949039107694359620n) // Arbitrum
  console.log(`Estimated delivery: ${Math.round(latency.totalMs / 60000)} minutes`)
} catch (err) {
  if (err instanceof CCIPHttpError) {
    console.error(`API error: ${err.context.apiErrorCode}`)
  }
}

Get latency with custom block confirmations

TypeScript

const latency = await chain.getLaneLatency(4949039107694359620n, 10)
console.log(`Latency with 10 confirmations: ${Math.round(latency.totalMs / 60000)} minutes`)

getLogs()

abstract getLogs(opts: { address?: string; endBefore?: string; endBlock?: number | bigint | "finalized" | "latest"; page?: number | bigint; since?: { blockTimestamp?: number | bigint; }; startBlock?: number | bigint; startTime?: number | bigint; topics?: (string | string[] | null)[]; typeAndVersions?: readonly (string | RegExp)[]; watch?: boolean | AbortSignal; }): AsyncIterableIterator<{ blockTimestamp: number; data: Record<string, unknown> | BytesLike; tx?: { blockNumber: number; error?: unknown; from: string; hash: string; logs?: readonly { transactionHash: string; blockNumber: number; address: string; topics: readonly string[]; index: number; blockTimestamp: number; data: Record<string, unknown> | BytesLike; tx?: { hash: string; ... 4 more ...; logs?: readonly ...[] | undefined; } | undefined; }[]; timestamp: number; }; }>

Defined in: chain.ts:1075

An async generator that yields logs based on the provided options.

Parameters

Parameter	Type	Description
`opts`	{ `address?`: `string`; `endBefore?`: `string`; `endBlock?`: `number` \| `bigint` \| `"finalized"` \| `"latest"`; `page?`: `number` \| `bigint`; `since?`: { `blockTimestamp?`: `number` \| `bigint`; }; `startBlock?`: `number` \| `bigint`; `startTime?`: `number` \| `bigint`; `topics?`: (`string` \| `string`[] \| `null`)[]; `typeAndVersions?`: readonly (`string` \| `RegExp`)[]; `watch?`: `boolean` \| `AbortSignal`; }	Options object containing: - `startBlock`: fetch and generate logs forward starting from this block; required unless startTime is provided; explicit 0 is allowed - `startTime`: instead of a startBlock, a start timestamp may be provided; if either is provided, fetch logs forward from this starting point - `since`: a previous log (preferably the last finalized from a previous call), as log cursor; may be more efficient in some chains for paginating, and may replace `startTime` or `startBlock` - `endBlock`: a fixed block height, finality tag or negative finality depth to stop iteration at; defaults to `latest` - `endBefore`: optional hint signature for end of iteration, instead of endBlock - `address`: if provided, fetch logs for this address only (may be required in some networks/implementations) - `topics`: if provided, fetch logs for these topics only; if string[], it's assumed to be a list of topic0s (i.e. string[] or string[][0], event_ids); some networks/implementations may not be able to filter topics other than topic0s, so one may want to assume those are optimization hints, instead of hard filters, and verify results - `page`: if provided, try to use this page/range for batches - `watch`: true or cancellation promise, stream logs after initial catch-up until endBlock finality tag (e.g. 'finalized'); requires endBlock to be a finality tag
`opts.address?`	`string`	Contract address to filter logs by.
`opts.endBefore?`	`string`	Cursor hint for the exclusive upper end of iteration on chains that support it.
`opts.endBlock?`	`number` \| `bigint` \| `"finalized"` \| `"latest"`	Ending block number (inclusive).
`opts.page?`	`number` \| `bigint`	Page size for pagination.
`opts.since?`	{ `blockTimestamp?`: `number` \| `bigint`; }	Resume hint: the last log emitted by a previous getLogs call on the same address/filter. Any subset of fields may be provided; each chain uses what it can. Two layers of behavior: 1. Start floors (ALL chains — see withSinceStart): `blockNumber` and `blockTimestamp` stand in for `startBlock`/`startTime` — each effective floor is the LARGER of the explicitly requested bound and the hint's — so a `since` carrying either satisfies the start requirement on its own. Blocks/versions are always fetched and emitted complete. 2. Block completeness: all chains implementations must guarantee all logs in some block are yielded in the same call before it returns. 3. Exclusive resume (chains with a native per-log cursor): the hinted log itself is NOT re-emitted, and other logs in the same block/tx may also not be; some chains may attempt to yield logs in the same block or transaction, but from 2., the contract guarantees only that logs from the next block or tx on are emitted, so for an hermetic poller, it's safer to only ever pass the last finalized log in the previous call as `since` hint. The hint only ever RAISES the start floors — `startBlock` is the scan floor (the scan never starts below it) and, when a `startBlock` exists, `startTime` is evaluated at filter-time just before emitting. A stale, foreign or malformed hint may be ignored (the usual walk runs). At-least-once is the only guarantee all families share: dedupe by `(transactionHash, index)`. Cursors are FILTER-SCOPED: a hint produced by a NARROWER filter must never be replayed on a wider one. Where the cursor is a per-block prefix (EVM), the wider filter's earlier-index logs in the hinted block count as already emitted and are SKIPPED — a loss, not a duplicate. The SDK cannot validate this: the hint carries the log's own `topics`, never the breadth of the filter that produced it, so a wide sweep and a narrow one over the same block hand out a byte-identical hint while requiring opposite resume behavior (an address mismatch IS detectable and is rejected; a topic-subset resume is not). Key each cursor by the filter that produced it, and start a new filter from its own `startBlock`. Per-family resume — EVM/Solana/TON: the hinted block/tx streams whole and logs at/before the hinted `index` are skipped (later same-block/same-tx logs still flow; TON floors its v3 `/messages` fast path at the hint's created_lt). Aptos: event `index` on single-topic streams, `blockNumber + 1` on multi-topic ones. Sui: inclusive checkpoint floors (re-delivered). Canton: unsupported.
`opts.since.blockTimestamp?`	`number` \| `bigint`	-
`opts.startBlock?`	`number` \| `bigint`	Starting block number (inclusive). Required unless startTime is provided; explicit 0 is allowed.
`opts.startTime?`	`number` \| `bigint`	Starting Unix timestamp (inclusive).
`opts.topics?`	(`string` \| `string`[] \| `null`)[]	Topics to filter logs by.
`opts.typeAndVersions?`	readonly (`string` \| `RegExp`)[]	Restrict logs to contracts whose Chain.typeAndVersion matches any of these. Useful when filtering by topic alone (no `address`) would otherwise match logs from many unrelated contract types — e.g. `ConfigSet` is emitted by OnRamp, OffRamp, CommitStore, FeeQuoter, TokenPool, and PriceRegistry alike. Pass e.g. `['OnRamp']` to keep only on-ramps. See passesTypeAndVersion for the exact matching rule. `undefined`/empty means no restriction (default), and costs nothing — `typeAndVersion` is never called.
`opts.watch?`	`boolean` \| `AbortSignal`	watch mode: polls for new logs after fetching since start (required), until endBlock finality tag (e.g. endBlock=finalized polls only finalized logs); can be an AbortSignal to cancel loop

Returns

AsyncIterableIterator<{ blockTimestamp: number; data: Record<string, unknown> | BytesLike; tx?: { blockNumber: number; error?: unknown; from: string; hash: string; logs?: readonly { transactionHash: string; blockNumber: number; address: string; topics: readonly string[]; index: number; blockTimestamp: number; data: Record<string, unknown> | BytesLike; tx?: { hash: string; ... 4 more ...; logs?: readonly ...[] | undefined; } | undefined; }[]; timestamp: number; }; }>

An async iterable iterator of logs.

Throws

CCIPLogsWatchRequiresFinalityError if watch mode is used without a finality endBlock tag

Throws

CCIPLogsRequiresStartError if used without startBlock or startTime

Throws

CCIPLogsAddressRequiredError if address is required but not provided (chain-specific)

getMessageById()

getMessageById(messageId: string, _opts?: { onRamp?: string; page?: number; }): Promise<CCIPRequest<CCIPVersion>>

Defined in: chain.ts:1188

Fetch a CCIP message by its unique message ID.

Parameters

Parameter	Type	Description
`messageId`	`string`	The unique message ID (0x + 64 hex chars)
`_opts?`	{ `onRamp?`: `string`; `page?`: `number`; }	Optional: `onRamp` hint for non-EVM chains
`_opts.onRamp?`	`string`	-
`_opts.page?`	`number`	-

Returns

Promise<CCIPRequest<CCIPVersion>>

CCIPRequest with metadata populated from API

Remarks

Uses the CCIP API to retrieve message details. The returned request includes a metadata field with API-specific information.

Example

TypeScript

const request = await chain.getMessageById(messageId)
console.log(`Sender: ${request.message.sender}`)

if (request.metadata) {
  console.log(`Status: ${request.metadata.status}`)
  if (request.metadata.deliveryTime) {
    console.log(`Delivered in ${request.metadata.deliveryTime}ms`)
  }
}

Throws

CCIPApiClientNotAvailableError if API disabled

Throws

CCIPMessageIdNotFoundError if message not found

Throws

CCIPOnRampRequiredError if onRamp is required but not provided

Throws

CCIPHttpError if API request fails

getMessagesInBatch()

getMessagesInBatch<R extends { lane: { destChainSelector: bigint; onRamp: string; sourceChainSelector: bigint; version: CCIPVersion; }; log: { blockTimestamp: number; }; message: { sequenceNumber: bigint; } | { sequenceNumber: bigint; } | { sequenceNumber: bigint; } | { sequenceNumber: bigint; } | { sequenceNumber: bigint; } | { sequenceNumber: bigint; }; }>(request: R, range: Pick<CommitReport, "minSeqNr" | "maxSeqNr">, opts?: { page?: number; }): Promise<R["message"][]>

Defined in: chain.ts:1218

Fetches all CCIP messages contained in a given commit batch. To be implemented for chains supporting CCIPVersion v1.6.0 and earlier

Type Parameters

Type Parameter
`R` extends { `lane`: { `destChainSelector`: `bigint`; `onRamp`: `string`; `sourceChainSelector`: `bigint`; `version`: `CCIPVersion`; }; `log`: { `blockTimestamp`: `number`; }; `message`: { `sequenceNumber`: `bigint`; } \| { `sequenceNumber`: `bigint`; } \| { `sequenceNumber`: `bigint`; } \| { `sequenceNumber`: `bigint`; } \| { `sequenceNumber`: `bigint`; } \| { `sequenceNumber`: `bigint`; }; }

Parameters

Parameter	Type	Description
`request`	`R`	CCIPRequest to fetch batch for
`range`	`Pick`<`CommitReport`, `"minSeqNr"` \| `"maxSeqNr"`>	batch range { minSeqnr, maxSeqNr }, e.g. from CommitReport
`opts?`	{ `page?`: `number`; }	Optional parameters (e.g., `page` for pagination width)
`opts.page?`	`number`	-

Returns

Promise<R["message"][]>

Array of messages in the batch

Throws

CCIPMessageBatchIncompleteError if not all messages in range could be fetched

Example

Get all messages in a batch

TypeScript

const verifications = await dest.getVerifications({ offRamp, request })
const messages = await source.getMessagesInBatch(request, verifications.report)
console.log(`Found ${messages.length} messages in batch`)

getMessagesInRange()

getMessagesInRange(opts: { address?: string; endBefore?: string; endBlock?: number | bigint | "finalized" | "latest"; page?: number | bigint; since?: { blockTimestamp?: number | bigint; }; startBlock?: number | bigint; startTime?: number | bigint; topics?: (string | string[] | null)[]; typeAndVersions?: readonly (string | RegExp)[]; watch?: boolean | AbortSignal; }): AsyncIterableIterator<CCIPRequest<CCIPVersion>>

Defined in: chain.ts:1154

Discover and decode CCIP messages within a block/slot/checkpoint range.

Parameters

Parameter	Type	Description
`opts`	{ `address?`: `string`; `endBefore?`: `string`; `endBlock?`: `number` \| `bigint` \| `"finalized"` \| `"latest"`; `page?`: `number` \| `bigint`; `since?`: { `blockTimestamp?`: `number` \| `bigint`; }; `startBlock?`: `number` \| `bigint`; `startTime?`: `number` \| `bigint`; `topics?`: (`string` \| `string`[] \| `null`)[]; `typeAndVersions?`: readonly (`string` \| `RegExp`)[]; `watch?`: `boolean` \| `AbortSignal`; }	LogFilter options (startBlock, endBlock, address, topics, page)
`opts.address?`	`string`	Contract address to filter logs by.
`opts.endBefore?`	`string`	Cursor hint for the exclusive upper end of iteration on chains that support it.
`opts.endBlock?`	`number` \| `bigint` \| `"finalized"` \| `"latest"`	Ending block number (inclusive).
`opts.page?`	`number` \| `bigint`	Page size for pagination.
`opts.since?`	{ `blockTimestamp?`: `number` \| `bigint`; }	Resume hint: the last log emitted by a previous getLogs call on the same address/filter. Any subset of fields may be provided; each chain uses what it can. Two layers of behavior: 1. Start floors (ALL chains — see withSinceStart): `blockNumber` and `blockTimestamp` stand in for `startBlock`/`startTime` — each effective floor is the LARGER of the explicitly requested bound and the hint's — so a `since` carrying either satisfies the start requirement on its own. Blocks/versions are always fetched and emitted complete. 2. Block completeness: all chains implementations must guarantee all logs in some block are yielded in the same call before it returns. 3. Exclusive resume (chains with a native per-log cursor): the hinted log itself is NOT re-emitted, and other logs in the same block/tx may also not be; some chains may attempt to yield logs in the same block or transaction, but from 2., the contract guarantees only that logs from the next block or tx on are emitted, so for an hermetic poller, it's safer to only ever pass the last finalized log in the previous call as `since` hint. The hint only ever RAISES the start floors — `startBlock` is the scan floor (the scan never starts below it) and, when a `startBlock` exists, `startTime` is evaluated at filter-time just before emitting. A stale, foreign or malformed hint may be ignored (the usual walk runs). At-least-once is the only guarantee all families share: dedupe by `(transactionHash, index)`. Cursors are FILTER-SCOPED: a hint produced by a NARROWER filter must never be replayed on a wider one. Where the cursor is a per-block prefix (EVM), the wider filter's earlier-index logs in the hinted block count as already emitted and are SKIPPED — a loss, not a duplicate. The SDK cannot validate this: the hint carries the log's own `topics`, never the breadth of the filter that produced it, so a wide sweep and a narrow one over the same block hand out a byte-identical hint while requiring opposite resume behavior (an address mismatch IS detectable and is rejected; a topic-subset resume is not). Key each cursor by the filter that produced it, and start a new filter from its own `startBlock`. Per-family resume — EVM/Solana/TON: the hinted block/tx streams whole and logs at/before the hinted `index` are skipped (later same-block/same-tx logs still flow; TON floors its v3 `/messages` fast path at the hint's created_lt). Aptos: event `index` on single-topic streams, `blockNumber + 1` on multi-topic ones. Sui: inclusive checkpoint floors (re-delivered). Canton: unsupported.
`opts.since.blockTimestamp?`	`number` \| `bigint`	-
`opts.startBlock?`	`number` \| `bigint`	Starting block number (inclusive). Required unless startTime is provided; explicit 0 is allowed.
`opts.startTime?`	`number` \| `bigint`	Starting Unix timestamp (inclusive).
`opts.topics?`	(`string` \| `string`[] \| `null`)[]	Topics to filter logs by.
`opts.typeAndVersions?`	readonly (`string` \| `RegExp`)[]	Restrict logs to contracts whose Chain.typeAndVersion matches any of these. Useful when filtering by topic alone (no `address`) would otherwise match logs from many unrelated contract types — e.g. `ConfigSet` is emitted by OnRamp, OffRamp, CommitStore, FeeQuoter, TokenPool, and PriceRegistry alike. Pass e.g. `['OnRamp']` to keep only on-ramps. See passesTypeAndVersion for the exact matching rule. `undefined`/empty means no restriction (default), and costs nothing — `typeAndVersion` is never called.
`opts.watch?`	`boolean` \| `AbortSignal`	watch mode: polls for new logs after fetching since start (required), until endBlock finality tag (e.g. endBlock=finalized polls only finalized logs); can be an AbortSignal to cancel loop

Returns

AsyncIterableIterator<CCIPRequest<CCIPVersion>>

Async iterator of CCIPRequest objects in native log order

Remarks

This is the range-scanning equivalent of getMessagesInTx. Results are yielded in native log order (block number + log index for EVM, slot order for Solana). Non-CCIP logs in the range are silently skipped.

On Solana, the address parameter is required (router program address). On EVM, it is optional but recommended for public RPCs that require address filtering.

Throws

CCIPChainFamilyUnsupportedError if a pre-v1.6 message is found on a non-EVM chain

Throws

CCIPLogsAddressRequiredError on Solana if address is not provided (thrown by underlying Chain.getLogs)

See

getMessagesInBatch - Batch discovery by sequence number range
getMessagesInTx - Per-transaction message discovery

Example

Scan a block range on EVM

TypeScript

for await (const request of chain.getMessagesInRange({
  startBlock: 1000000,
  endBlock: 1001000,
  address: '0xOnRampAddress...', // optional on EVM
})) {
  console.log(`seqNr=${request.message.sequenceNumber} dest=${request.lane.destChainSelector}`)
}

getMessagesInTx()

getMessagesInTx(tx: string | ChainTransaction): Promise<CCIPRequest<CCIPVersion>[]>

Defined in: chain.ts:1095

Fetch all CCIP requests in a transaction.

Parameters

Parameter	Type	Description
`tx`	`string` \| `ChainTransaction`	ChainTransaction or txHash to fetch requests from

Returns

Promise<CCIPRequest<CCIPVersion>[]>

Promise resolving to CCIP messages in the transaction (at least one)

Throws

CCIPTransactionNotFoundError if transaction does not exist

Throws

CCIPMessageNotFoundInTxError if no CCIPSendRequested events in tx

Example

Get messages from transaction

TypeScript

const chain = await EVMChain.fromUrl('https://eth-mainnet.example.com')
const requests = await chain.getMessagesInTx('0xabc123...')
for (const req of requests) {
  console.log(`Message ID: ${req.message.messageId}`)
}

getNativeTokenForRouter()

abstract getNativeTokenForRouter(router: string): Promise<string>

Defined in: chain.ts:1387

Get the native token address for a Router.

Parameters

Parameter	Type	Description
`router`	`string`	Router contract address

Returns

Promise<string>

Promise resolving to native token address (usually wrapped)

Example

Get wrapped native token

TypeScript

const weth = await chain.getNativeTokenForRouter(routerAddress)
console.log(`Wrapped native: ${weth}`)

getOffchainTokenData()

getOffchainTokenData(request: { log: { }; message: { ccipReceiveGasLimit: number; ccvAndExecutorHash: string; data: string; destBlob: string; destChainSelector: bigint; encodedMessage: string; executionGasLimit: number; feeToken: string; feeTokenAmount: bigint; finality: FinalityRequested; messageId: string; messageNumber: bigint; offRampAddress: string; onRampAddress: string; receipts: readonly { destBytesOverhead: bigint; destGasLimit: bigint; extraArgs: string; feeTokenAmount: bigint; issuer: string; }[]; receiver: string; sender: string; sequenceNumber: bigint; sourceChainSelector: bigint; tokenAmountBeforeTokenPoolFees: bigint; tokenAmounts: readonly { amount: bigint; destTokenAddress: string; extraData: string; sourcePoolAddress: string; sourceTokenAddress: string; tokenReceiver: string; }[]; verifierBlobs: readonly string[]; } | { data: string; feeToken: string; feeTokenAmount: bigint; gasLimit: bigint; messageId: string; nonce: bigint; receiver: string; sender: string; sequenceNumber: bigint; sourceChainSelector: bigint; sourceTokenData: readonly string[]; strict: boolean; tokenAmounts: readonly { amount: bigint; token: string; }[]; } | { data: string; feeToken: string; feeTokenAmount: bigint; gasLimit: bigint; messageId: string; nonce: bigint; receiver: string; sender: string; sequenceNumber: bigint; sourceChainSelector: bigint; sourceTokenData: readonly string[]; strict: boolean; tokenAmounts: readonly { amount: bigint; destGasAmount: bigint; destTokenAddress: string; extraData: string; sourcePoolAddress: string; token: string; }[]; } | { allowOutOfOrderExecution: boolean; data: string; destChainSelector: bigint; extraArgs: string; feeToken: string; feeTokenAmount: bigint; feeValueJuels: bigint; gasLimit: bigint; messageId: string; nonce: bigint; receiver: string; sender: string; sequenceNumber: bigint; sourceChainSelector: bigint; tokenAmounts: readonly { amount: bigint; destExecData: string; destGasAmount: bigint; destTokenAddress: string; extraData: string; sourcePoolAddress: string; }[]; } | { accountIsWritableBitmap: bigint; accounts: string[]; allowOutOfOrderExecution: boolean; computeUnits: bigint; data: string; destChainSelector: bigint; extraArgs: string; feeToken: string; feeTokenAmount: bigint; feeValueJuels: bigint; messageId: string; nonce: bigint; receiver: string; sender: string; sequenceNumber: bigint; sourceChainSelector: bigint; tokenAmounts: readonly { amount: bigint; destExecData: string; destGasAmount: bigint; destTokenAddress: string; extraData: string; sourcePoolAddress: string; }[]; tokenReceiver: string; } | { allowOutOfOrderExecution: boolean; data: string; destChainSelector: bigint; extraArgs: string; feeToken: string; feeTokenAmount: bigint; feeValueJuels: bigint; gasLimit: bigint; messageId: string; nonce: bigint; receiver: string; receiverObjectIds: string[]; sender: string; sequenceNumber: bigint; sourceChainSelector: bigint; tokenAmounts: readonly { amount: bigint; destExecData: string; destGasAmount: bigint; destTokenAddress: string; extraData: string; sourcePoolAddress: string; }[]; tokenReceiver: string; }; }): Promise<OffchainTokenData[]>

Defined in: chain.ts:1734

Fetch supported offchain token data for a request from this network. It logs but doesn't throw in case it can't fetch attestation, as the transfers may not be from the expected attestation providers. It returns default offchainData=undefined for those.

Parameters

Parameter	Type	Description
`request`	{ `log`: { }; `message`: { `ccipReceiveGasLimit`: `number`; `ccvAndExecutorHash`: `string`; `data`: `string`; `destBlob`: `string`; `destChainSelector`: `bigint`; `encodedMessage`: `string`; `executionGasLimit`: `number`; `feeToken`: `string`; `feeTokenAmount`: `bigint`; `finality`: `FinalityRequested`; `messageId`: `string`; `messageNumber`: `bigint`; `offRampAddress`: `string`; `onRampAddress`: `string`; `receipts`: readonly { `destBytesOverhead`: `bigint`; `destGasLimit`: `bigint`; `extraArgs`: `string`; `feeTokenAmount`: `bigint`; `issuer`: `string`; }[]; `receiver`: `string`; `sender`: `string`; `sequenceNumber`: `bigint`; `sourceChainSelector`: `bigint`; `tokenAmountBeforeTokenPoolFees`: `bigint`; `tokenAmounts`: readonly { `amount`: `bigint`; `destTokenAddress`: `string`; `extraData`: `string`; `sourcePoolAddress`: `string`; `sourceTokenAddress`: `string`; `tokenReceiver`: `string`; }[]; `verifierBlobs`: readonly `string`[]; } \| { `data`: `string`; `feeToken`: `string`; `feeTokenAmount`: `bigint`; `gasLimit`: `bigint`; `messageId`: `string`; `nonce`: `bigint`; `receiver`: `string`; `sender`: `string`; `sequenceNumber`: `bigint`; `sourceChainSelector`: `bigint`; `sourceTokenData`: readonly `string`[]; `strict`: `boolean`; `tokenAmounts`: readonly { `amount`: `bigint`; `token`: `string`; }[]; } \| { `data`: `string`; `feeToken`: `string`; `feeTokenAmount`: `bigint`; `gasLimit`: `bigint`; `messageId`: `string`; `nonce`: `bigint`; `receiver`: `string`; `sender`: `string`; `sequenceNumber`: `bigint`; `sourceChainSelector`: `bigint`; `sourceTokenData`: readonly `string`[]; `strict`: `boolean`; `tokenAmounts`: readonly { `amount`: `bigint`; `destGasAmount`: `bigint`; `destTokenAddress`: `string`; `extraData`: `string`; `sourcePoolAddress`: `string`; `token`: `string`; }[]; } \| { `allowOutOfOrderExecution`: `boolean`; `data`: `string`; `destChainSelector`: `bigint`; `extraArgs`: `string`; `feeToken`: `string`; `feeTokenAmount`: `bigint`; `feeValueJuels`: `bigint`; `gasLimit`: `bigint`; `messageId`: `string`; `nonce`: `bigint`; `receiver`: `string`; `sender`: `string`; `sequenceNumber`: `bigint`; `sourceChainSelector`: `bigint`; `tokenAmounts`: readonly { `amount`: `bigint`; `destExecData`: `string`; `destGasAmount`: `bigint`; `destTokenAddress`: `string`; `extraData`: `string`; `sourcePoolAddress`: `string`; }[]; } \| { `accountIsWritableBitmap`: `bigint`; `accounts`: `string`[]; `allowOutOfOrderExecution`: `boolean`; `computeUnits`: `bigint`; `data`: `string`; `destChainSelector`: `bigint`; `extraArgs`: `string`; `feeToken`: `string`; `feeTokenAmount`: `bigint`; `feeValueJuels`: `bigint`; `messageId`: `string`; `nonce`: `bigint`; `receiver`: `string`; `sender`: `string`; `sequenceNumber`: `bigint`; `sourceChainSelector`: `bigint`; `tokenAmounts`: readonly { `amount`: `bigint`; `destExecData`: `string`; `destGasAmount`: `bigint`; `destTokenAddress`: `string`; `extraData`: `string`; `sourcePoolAddress`: `string`; }[]; `tokenReceiver`: `string`; } \| { `allowOutOfOrderExecution`: `boolean`; `data`: `string`; `destChainSelector`: `bigint`; `extraArgs`: `string`; `feeToken`: `string`; `feeTokenAmount`: `bigint`; `feeValueJuels`: `bigint`; `gasLimit`: `bigint`; `messageId`: `string`; `nonce`: `bigint`; `receiver`: `string`; `receiverObjectIds`: `string`[]; `sender`: `string`; `sequenceNumber`: `bigint`; `sourceChainSelector`: `bigint`; `tokenAmounts`: readonly { `amount`: `bigint`; `destExecData`: `string`; `destGasAmount`: `bigint`; `destTokenAddress`: `string`; `extraData`: `string`; `sourcePoolAddress`: `string`; }[]; `tokenReceiver`: `string`; }; }	CCIP request, with tx.hash and message
`request.log`	{ }	-
`request.message`	{ `ccipReceiveGasLimit`: `number`; `ccvAndExecutorHash`: `string`; `data`: `string`; `destBlob`: `string`; `destChainSelector`: `bigint`; `encodedMessage`: `string`; `executionGasLimit`: `number`; `feeToken`: `string`; `feeTokenAmount`: `bigint`; `finality`: `FinalityRequested`; `messageId`: `string`; `messageNumber`: `bigint`; `offRampAddress`: `string`; `onRampAddress`: `string`; `receipts`: readonly { `destBytesOverhead`: `bigint`; `destGasLimit`: `bigint`; `extraArgs`: `string`; `feeTokenAmount`: `bigint`; `issuer`: `string`; }[]; `receiver`: `string`; `sender`: `string`; `sequenceNumber`: `bigint`; `sourceChainSelector`: `bigint`; `tokenAmountBeforeTokenPoolFees`: `bigint`; `tokenAmounts`: readonly { `amount`: `bigint`; `destTokenAddress`: `string`; `extraData`: `string`; `sourcePoolAddress`: `string`; `sourceTokenAddress`: `string`; `tokenReceiver`: `string`; }[]; `verifierBlobs`: readonly `string`[]; } \| { `data`: `string`; `feeToken`: `string`; `feeTokenAmount`: `bigint`; `gasLimit`: `bigint`; `messageId`: `string`; `nonce`: `bigint`; `receiver`: `string`; `sender`: `string`; `sequenceNumber`: `bigint`; `sourceChainSelector`: `bigint`; `sourceTokenData`: readonly `string`[]; `strict`: `boolean`; `tokenAmounts`: readonly { `amount`: `bigint`; `token`: `string`; }[]; } \| { `data`: `string`; `feeToken`: `string`; `feeTokenAmount`: `bigint`; `gasLimit`: `bigint`; `messageId`: `string`; `nonce`: `bigint`; `receiver`: `string`; `sender`: `string`; `sequenceNumber`: `bigint`; `sourceChainSelector`: `bigint`; `sourceTokenData`: readonly `string`[]; `strict`: `boolean`; `tokenAmounts`: readonly { `amount`: `bigint`; `destGasAmount`: `bigint`; `destTokenAddress`: `string`; `extraData`: `string`; `sourcePoolAddress`: `string`; `token`: `string`; }[]; } \| { `allowOutOfOrderExecution`: `boolean`; `data`: `string`; `destChainSelector`: `bigint`; `extraArgs`: `string`; `feeToken`: `string`; `feeTokenAmount`: `bigint`; `feeValueJuels`: `bigint`; `gasLimit`: `bigint`; `messageId`: `string`; `nonce`: `bigint`; `receiver`: `string`; `sender`: `string`; `sequenceNumber`: `bigint`; `sourceChainSelector`: `bigint`; `tokenAmounts`: readonly { `amount`: `bigint`; `destExecData`: `string`; `destGasAmount`: `bigint`; `destTokenAddress`: `string`; `extraData`: `string`; `sourcePoolAddress`: `string`; }[]; } \| { `accountIsWritableBitmap`: `bigint`; `accounts`: `string`[]; `allowOutOfOrderExecution`: `boolean`; `computeUnits`: `bigint`; `data`: `string`; `destChainSelector`: `bigint`; `extraArgs`: `string`; `feeToken`: `string`; `feeTokenAmount`: `bigint`; `feeValueJuels`: `bigint`; `messageId`: `string`; `nonce`: `bigint`; `receiver`: `string`; `sender`: `string`; `sequenceNumber`: `bigint`; `sourceChainSelector`: `bigint`; `tokenAmounts`: readonly { `amount`: `bigint`; `destExecData`: `string`; `destGasAmount`: `bigint`; `destTokenAddress`: `string`; `extraData`: `string`; `sourcePoolAddress`: `string`; }[]; `tokenReceiver`: `string`; } \| { `allowOutOfOrderExecution`: `boolean`; `data`: `string`; `destChainSelector`: `bigint`; `extraArgs`: `string`; `feeToken`: `string`; `feeTokenAmount`: `bigint`; `feeValueJuels`: `bigint`; `gasLimit`: `bigint`; `messageId`: `string`; `nonce`: `bigint`; `receiver`: `string`; `receiverObjectIds`: `string`[]; `sender`: `string`; `sequenceNumber`: `bigint`; `sourceChainSelector`: `bigint`; `tokenAmounts`: readonly { `amount`: `bigint`; `destExecData`: `string`; `destGasAmount`: `bigint`; `destTokenAddress`: `string`; `extraData`: `string`; `sourcePoolAddress`: `string`; }[]; `tokenReceiver`: `string`; }	-

Returns

Promise<OffchainTokenData[]>

Promise resolving to array with one offchain token data for each token transfer

Example

Get offchain token data for USDC transfer

TypeScript

const offchainData = await source.getOffchainTokenData(request)
// Use in execution report

getOffRampConfig()

abstract getOffRampConfig(offRamp: string, sourceChainSelector: bigint): Promise<OffRampConfig>

Defined in: chain.ts:1328

Fetch the full OffRamp configuration for a given source chain.

Parameters

Parameter	Type	Description
`offRamp`	`string`	OffRamp contract address.
`sourceChainSelector`	`bigint`	Source chain selector.

Returns

Promise<OffRampConfig>

Merged OffRamp config — at minimum router, onRamp, type, version, typeAndVersion.

Remarks

Returns a merged object containing every static (per-contract) and per-source field exposed by the underlying contract. Concrete subclasses preserve the contract-native field names and return richer objects than the OffRampConfig base interface declares — they may include extra fields available only on specific versions (e.g. EVM v2.0 exposes onRamps: string[]).

Throws

CCIPContractTypeInvalidError if address is not an OffRamp.

getOffRampsForRouter()

abstract getOffRampsForRouter(router: string, sourceChainSelector: bigint): Promise<string[]>

Defined in: chain.ts:1402

Fetch the OffRamps allowlisted in a Router. Used to discover OffRamp connected to an OnRamp.

Parameters

Parameter	Type	Description
`router`	`string`	Router contract address
`sourceChainSelector`	`bigint`	Source chain selector

Returns

Promise<string[]>

Promise resolving to array of OffRamp addresses

Example

Get offRamps for a source chain

TypeScript

const offRamps = await dest.getOffRampsForRouter(routerAddress, sourceSelector)
console.log(`Found ${offRamps.length} offRamp(s)`)

getOnRampConfig()

abstract getOnRampConfig(onRamp: string, destChainSelector: bigint): Promise<OnRampConfig>

Defined in: chain.ts:1310

Fetch the full OnRamp configuration for a given destination chain.

Parameters

Parameter	Type	Description
`onRamp`	`string`	OnRamp contract address.
`destChainSelector`	`bigint`	Destination chain selector.

Returns

Promise<OnRampConfig>

Merged OnRamp config — at minimum router, type, version, typeAndVersion.

Remarks

Returns a merged object containing every static (per-contract) and per-destination field exposed by the underlying contract. Concrete subclasses (e.g. EVMChain) preserve the contract-native field names and return richer objects than the OnRampConfig base interface declares — they may include extra fields available only on specific versions.

Throws

CCIPContractTypeInvalidError if address is not an OnRamp.

getOnRampForRouter()

abstract getOnRampForRouter(router: string, destChainSelector: bigint): Promise<string>

Defined in: chain.ts:1418

Fetch the OnRamp registered in a Router for a destination chain.

Parameters

Parameter	Type	Description
`router`	`string`	Router contract address
`destChainSelector`	`bigint`	Destination chain selector

Returns

Promise<string>

Promise resolving to OnRamp address

Throws

CCIPLaneNotFoundError if no lane exists to destination

Example

Get onRamp for destination

TypeScript

const onRamp = await source.getOnRampForRouter(routerAddress, destSelector)
console.log(`OnRamp: ${onRamp}`)

getOnRampsForOffRamp()

getOnRampsForOffRamp(offRamp: string, sourceChainSelector: bigint): Promise<string[]>

Defined in: chain.ts:1438

Fetch the OnRamps addresses set in OffRamp config. Used to discover OffRamp connected to an OnRamp.

Parameters

Parameter	Type	Description
`offRamp`	`string`	OffRamp contract address
`sourceChainSelector`	`bigint`	Source chain selector

Returns

Promise<string[]>

Promise resolving to OnRamps addresses

Remarks

Default implementation reads from Chain.getOffRampConfig; if the concrete config exposes an onRamps: string[] (e.g. EVM v2.0 with multiple historical OnRamps), it is returned as-is; otherwise [cfg.onRamp] is returned.

Example

Get onRamp from offRamp config

TypeScript

const [onRamp] = await dest.getOnRampsForOffRamp(offRampAddress, sourceSelector)
console.log(`OnRamp: ${onRamp}`)

getRegistryTokenConfig()

abstract getRegistryTokenConfig(registry: string, token: string): Promise<RegistryTokenConfig>

Defined in: chain.ts:2341

Fetch token configuration from a TokenAdminRegistry.

Parameters

Parameter	Type	Description
`registry`	`string`	TokenAdminRegistry contract address.
`token`	`string`	Token address to query.

Returns

Promise<RegistryTokenConfig>

RegistryTokenConfig containing administrator and pool information.

Remarks

The TokenAdminRegistry is a contract that tracks token administrators and their associated pools. Each token has an administrator who can update pool configurations.

Example

Query a token's registry configuration

TypeScript

const config = await chain.getRegistryTokenConfig(registryAddress, tokenAddress)
console.log(`Administrator: ${config.administrator}`)
if (config.tokenPool) {
  console.log(`Pool: ${config.tokenPool}`)
}

Throws

CCIPTokenNotInRegistryError if token is not registered.

getRequiredCCVs()?

optional getRequiredCCVs(opts: { message: GetRequiredCCVsMessage; offRamp: string; }): Promise<GetRequiredCCVsResult>

Defined in: chain.ts:2675

Resolve the CCV set the destination OffRamp will require for a candidate message, and whether its finality is accepted (a rejection throws CCIPFinalityNotAllowedError). A read via the getCCVsForMessage resolver; EVM destinations only. The set is informative and sender-scoped.

Parameters

Parameter	Type	Description
`opts`	{ `message`: `GetRequiredCCVsMessage`; `offRamp`: `string`; }	Destination OffRamp (v2.0) address and the candidate message (GetRequiredCCVsMessage).
`opts.message`	`GetRequiredCCVsMessage`	-
`opts.offRamp`	`string`	-

Returns

Promise<GetRequiredCCVsResult>

{ requiredCCVs, optionalCCVs, optionalThreshold }.

getRouterForOffRamp()

getRouterForOffRamp(offRamp: string, sourceChainSelector: bigint): Promise<string>

Defined in: chain.ts:1372

Fetch the Router address set in OffRamp config.

Parameters

Parameter	Type	Description
`offRamp`	`string`	OffRamp contract address
`sourceChainSelector`	`bigint`	Source chain selector

Returns

Promise<string>

Promise resolving to Router address

Remarks

Default implementation reads .router from Chain.getOffRampConfig; subclasses generally need not override this.

Throws

CCIPContractTypeInvalidError if address is not an OffRamp

Example

Get router from offRamp

TypeScript

const router = await chain.getRouterForOffRamp(offRampAddress, sourceSelector)
console.log(`Router: ${router}`)

getRouterForOnRamp()

getRouterForOnRamp(onRamp: string, destChainSelector: bigint): Promise<string>

Defined in: chain.ts:1350

Fetch the Router address set in OnRamp config. Used to discover OffRamp connected to OnRamp.

Parameters

Parameter	Type	Description
`onRamp`	`string`	OnRamp contract address
`destChainSelector`	`bigint`	Destination chain selector

Returns

Promise<string>

Promise resolving to Router address

Remarks

Default implementation reads .router from Chain.getOnRampConfig; subclasses generally need not override this.

Throws

CCIPContractTypeInvalidError if address is not an OnRamp

Example

Get router from onRamp

TypeScript

const router = await chain.getRouterForOnRamp(onRampAddress, destSelector)
console.log(`Router: ${router}`)

getSupportedTokens()

abstract getSupportedTokens(address: string, opts?: { page?: number; }): Promise<string[]>

Defined in: chain.ts:2318

List tokens supported by given TokenAdminRegistry contract.

Parameters

Parameter	Type	Description
`address`	`string`	Usually TokenAdminRegistry, but chain may support receiving Router, OnRamp, etc.
`opts?`	{ `page?`: `number`; }	Optional parameters (e.g., `page` for pagination range)
`opts.page?`	`number`	-

Returns

Promise<string[]>

Promise resolving to array of supported token addresses

Example

Get all supported tokens

TypeScript

const tokens = await chain.getSupportedTokens(registryAddress)
console.log(`${tokens.length} tokens supported`)

getTokenAdminRegistryFor()

abstract getTokenAdminRegistryFor(address: string, destChainSelector?: bigint): Promise<string>

Defined in: chain.ts:1510

Fetch TokenAdminRegistry configured in a given OnRamp, Router, etc. Needed to map a source token to its dest counterparts.

Parameters

Parameter	Type	Description
`address`	`string`	Contract address (OnRamp, Router, etc.)
`destChainSelector?`	`bigint`	Some dest chain connected to this address/router

Returns

Promise<string>

Promise resolving to TokenAdminRegistry address

Example

Get token registry

TypeScript

const registry = await chain.getTokenAdminRegistryFor(onRampAddress)
console.log(`Registry: ${registry}`)

getTokenForTokenPool()

getTokenForTokenPool(tokenPool: string): Promise<string>

Defined in: chain.ts:1455

Fetch the TokenPool's token/mint.

Parameters

Parameter	Type	Description
`tokenPool`	`string`	TokenPool address

Returns

Promise<string>

Promise resolving to token or mint address

Example

Get token for pool

TypeScript

const token = await chain.getTokenForTokenPool(tokenPoolAddress)
console.log(`Token: ${token}`)

getTokenInfo()

abstract getTokenInfo(token: string): Promise<TokenInfo>

Defined in: chain.ts:1471

Fetch token metadata.

Parameters

Parameter	Type	Description
`token`	`string`	Token address

Returns

Promise<TokenInfo>

Promise resolving to token symbol, decimals, and optionally name

Example

Get token info

TypeScript

const info = await chain.getTokenInfo(tokenAddress)
console.log(`${info.symbol}: ${info.decimals} decimals`)

getTokenPoolConfig()

abstract getTokenPoolConfig(tokenPool: string, feeOpts?: TokenTransferFeeOpts): Promise<TokenPoolConfig>

Defined in: chain.ts:2370

Fetch configuration of a token pool.

Parameters

Parameter	Type	Description
`tokenPool`	`string`	Token pool contract address.
`feeOpts?`	`TokenTransferFeeOpts`	Optional parameters to also fetch token transfer fee config.

Returns

Promise<TokenPoolConfig>

TokenPoolConfig containing token, router, version info, and optionally fee config.

Remarks

Return type varies by chain:

EVM: typeAndVersion is always present (required)
Solana: Includes extra tokenPoolProgram field
Aptos: Standard fields only
Sui/TON: Throws CCIPNotImplementedError

Example

Type-safe access to chain-specific fields

TypeScript

// Use instanceof to narrow the chain type
if (chain instanceof SolanaChain) {
  const config = await chain.getTokenPoolConfig(poolAddress)
  console.log(config.tokenPoolProgram) // TypeScript knows this exists!
} else if (chain instanceof EVMChain) {
  const config = await chain.getTokenPoolConfig(poolAddress)
  console.log(config.typeAndVersion) // TypeScript knows this is required!
}

Throws

CCIPNotImplementedError on Sui or TON chains

getTokenPoolRemote()

getTokenPoolRemote(tokenPool: string, remoteChainSelector: bigint): Promise<TokenPoolRemote>

Defined in: chain.ts:2438

Fetch remote chain configuration for a token pool for a specific destination.

Parameters

Parameter	Type	Description
`tokenPool`	`string`	Token pool address on the current chain.
`remoteChainSelector`	`bigint`	Chain selector of the desired remote chain.

Returns

Promise<TokenPoolRemote>

TokenPoolRemote config for the specified remote chain.

Remarks

Convenience wrapper around getTokenPoolRemotes that returns a single configuration instead of a Record. Use this when you need configuration for a specific destination chain.

Example

TypeScript

const arbitrumSelector = 4949039107694359620n
const remote = await chain.getTokenPoolRemote(poolAddress, arbitrumSelector)
console.log(`Remote token: ${remote.remoteToken}`)
console.log(`Remote pools: ${remote.remotePools.join(', ')}`)

Throws

CCIPTokenPoolChainConfigNotFoundError if no configuration found for the specified remote chain.

getTokenPoolRemotes()

abstract getTokenPoolRemotes(tokenPool: string, remoteChainSelector?: bigint): Promise<Record<string, TokenPoolRemote>>

Defined in: chain.ts:2413

Fetch remote chain configurations for a token pool.

Parameters

Parameter	Type	Description
`tokenPool`	`string`	Token pool address on the current chain.
`remoteChainSelector?`	`bigint`	Optional chain selector to filter results to a single destination.

Returns

Promise<Record<string, TokenPoolRemote>>

Record where keys are chain names (e.g., "ethereum-mainnet") and values are TokenPoolRemote configs.

Remarks

A token pool maintains configurations for each destination chain it supports. The returned Record maps chain names to their respective configurations.

Examples

Get all supported destinations

TypeScript

const remotes = await chain.getTokenPoolRemotes(poolAddress)
// Returns: {
//   "ethereum-mainnet": { remoteToken: "0x...", remotePools: [...], ... },
//   "ethereum-mainnet-arbitrum-1": { remoteToken: "0x...", remotePools: [...], ... },
//   "solana-mainnet": { remoteToken: "...", remotePools: [...], ... }
// }

// Access a specific chain's config
const arbConfig = remotes['ethereum-mainnet']
console.log(`Remote token: ${arbConfig.remoteToken}`)

Filter to a specific destination

TypeScript

import { networkInfo } from '@chainlink/ccip-sdk'

const arbitrumSelector = 4949039107694359620n
const remotes = await chain.getTokenPoolRemotes(poolAddress, arbitrumSelector)
// Returns only: { "arbitrum-mainnet": { ... } }

const chainName = networkInfo(arbitrumSelector).name
const config = remotes[chainName]

Throws

CCIPTokenPoolChainConfigNotFoundError if remoteChainSelector is specified but not configured.

getTokenPrice()

getTokenPrice(_opts: { router: string; timestamp?: number; token: string; }): Promise<TokenPrice>

Defined in: chain.ts:2597

Fetch the on-chain USD price of a token from the FeeQuoter or PriceRegistry.

Parameters

Parameter	Type
`_opts`	{ `router`: `string`; `timestamp?`: `number`; `token`: `string`; }
`_opts.router`	`string`
`_opts.timestamp?`	`number`
`_opts.token`	`string`

Returns

Promise<TokenPrice>

Promise resolving to TokenPrice with the USD price per whole token.

Remarks

On EVM, the price contract is resolved via the Router's OnRamp: PriceRegistry for v1.2/v1.5 lanes, FeeQuoter for v1.6+ lanes. When timestamp is provided on EVM, the price is read at the block closest to that timestamp (requires archive node). On Solana and Aptos, the FeeQuoter is resolved directly from the Router config; timestamp is not yet supported and will be ignored.

Throws

CCIPNotImplementedError if not implemented for this chain family

Example

TypeScript

const { price } = await chain.getTokenPrice({
  router: routerAddress,
  token: linkAddress,
})
console.log(`LINK: $${price.toFixed(2)}`)

getTotalFeesEstimate()

getTotalFeesEstimate(_opts: Omit<SendMessageOpts, "approveMax">): Promise<TotalFeesEstimate>

Defined in: chain.ts:2563

Estimate total fees for a cross-chain message.

Returns two components:

ccipFee: from Router.getFee(), denominated in the message's feeToken (native token if omitted). Includes gas, DON costs, and FeeQuoter-level token transfer overhead (all CCIP versions).
tokenTransferFee: pool-level BPS fee deducted from the transferred token amount (v2.0+ only). The recipient receives amount - feeDeducted on the destination chain. Absent on pre-v2.0 lanes or data-only messages.

Parameters

Parameter	Type	Description
`_opts`	`Omit`<`SendMessageOpts`, `"approveMax"`>	SendMessageOpts without approveMax

Returns

Promise<TotalFeesEstimate>

Promise resolving to TotalFeesEstimate

Throws

CCIPNotImplementedError if not implemented for this chain family

getTransaction()

abstract getTransaction(hash: string): Promise<ChainTransaction>

Defined in: chain.ts:995

Fetch a transaction by its hash.

Parameters

Parameter	Type	Description
`hash`	`string`	Transaction hash

Returns

Promise<ChainTransaction>

Promise resolving to generic transaction details

Throws

CCIPTransactionNotFoundError if transaction does not exist (transient)

Example

Fetch transaction details

TypeScript

const chain = await EVMChain.fromUrl('https://eth-mainnet.example.com')
try {
  const tx = await chain.getTransaction('0xabc123...')
  console.log(`Block: ${tx.blockNumber}, Timestamp: ${tx.timestamp}`)
} catch (err) {
  if (err instanceof CCIPTransactionNotFoundError && err.isTransient) {
    // Transaction may be pending
  }
}

getVerifications()

getVerifications(opts: { indexer?: NetworkType | readonly string[]; offRamp: string; request: { lane: { destChainSelector: bigint; onRamp: string; sourceChainSelector: bigint; version: CCIPVersion; }; log: { blockTimestamp: number; }; message: { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; } | { messageId: string; sequenceNumber: bigint; }; }; } & VerificationSourcesOpts & Pick<LogFilter, "startBlock" | "watch" | "page">): Promise<CCIPVerifications>

Defined in: chain.ts:1933

Look for a CommitReport at dest for given CCIP request. May be specialized by some subclasses.

Parameters

Parameter	Type	Description
`opts`	{ `indexer?`: `NetworkType` \| readonly `string`[]; `offRamp`: `string`; `request`: { `lane`: { `destChainSelector`: `bigint`; `onRamp`: `string`; `sourceChainSelector`: `bigint`; `version`: `CCIPVersion`; }; `log`: { `blockTimestamp`: `number`; }; `message`: { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; } \| { `messageId`: `string`; `sequenceNumber`: `bigint`; }; }; } & `VerificationSourcesOpts` & `Pick`<`LogFilter`, `"startBlock"` \| `"watch"` \| `"page"`>	getVerifications options

Returns

Promise<CCIPVerifications>

CCIPVerifications

Throws

CCIPCommitNotFoundError if no commit found for the request (transient)

Examples

Get commit for a request

TypeScript

const verifications = await dest.getVerifications({
  offRamp: offRampAddress,
  request,
})
console.log(`Committed at block: ${verifications.log.blockNumber}`)

CCIP v2.0: fall back to a verifier the indexers don't carry

TypeScript

const { verificationPolicy, verifications } = await dest.getVerifications({
  offRamp,
  request,
  verifiers: ['https://verifier.example'], // grpc-web proxy in front of its aggregator
})

resolveEncodedMessage()

protected resolveEncodedMessage(request: { message: { messageId: string; } | { messageId: string; } | { messageId: string; } | { messageId: string; } | { messageId: string; } | { messageId: string; }; }): Promise<string>

Defined in: chain.ts:1963

The MessageV1Codec-encoded form of a CCIP v2.0 request's message: taken from the request when it carries one (decoded from source logs), else fetched from the CCIP API (whose getMessageById requests don't).

Parameters

Parameter	Type	Description
`request`	{ `message`: { `messageId`: `string`; } \| { `messageId`: `string`; } \| { `messageId`: `string`; } \| { `messageId`: `string`; } \| { `messageId`: `string`; } \| { `messageId`: `string`; }; }	The v2.0 request
`request.message`	{ `messageId`: `string`; } \| { `messageId`: `string`; } \| { `messageId`: `string`; } \| { `messageId`: `string`; } \| { `messageId`: `string`; } \| { `messageId`: `string`; }	-

Returns

Promise<string>

The 0x-prefixed encoded message

Throws

CCIPApiClientNotAvailableError if it must be fetched and the API is disabled

resolveExecuteOpts()

protected resolveExecuteOpts(opts: ExecuteOpts): Promise<{ input: ExecutionInput; offRamp: string; } & { forceBuffer?: boolean; forceLookupTable?: boolean; gasLimit?: number; receiver?: string; tokensGasLimit?: number; txGasLimit?: number; }>

Defined in: chain.ts:1751

Resolves ExecuteOpts that may contain a messageId (API shorthand) into the canonical { offRamp, input } form required by generateUnsignedExecute.

When opts already contains input the method is a no-op and returns it unchanged. When opts contains only a messageId it calls apiClient.getExecutionInput and merges the result back with any extra opts fields (e.g. gasLimit). If opts.gasLimit is undefined and estimateReceiveExecution is available, try to estimate gasLimitOverride

Parameters

Parameter	Type
`opts`	`ExecuteOpts`

Returns

Promise<{ input: ExecutionInput; offRamp: string; } & { forceBuffer?: boolean; forceLookupTable?: boolean; gasLimit?: number; receiver?: string; tokensGasLimit?: number; txGasLimit?: number; }>

Throws

CCIPApiClientNotAvailableError if messageId is provided but no apiClient

sendMessage()

abstract sendMessage(opts: SendMessageOpts & { txGasLimit?: number; wallet: unknown; }): Promise<CCIPRequest<CCIPVersion>>

Defined in: chain.ts:1712

Send a CCIP message through a router using provided wallet.

Parameters

Parameter	Type	Description
`opts`	`SendMessageOpts` & { `txGasLimit?`: `number`; `wallet`: `unknown`; }	SendMessageOpts with chain-specific wallet for signing

Returns

Promise<CCIPRequest<CCIPVersion>>

Promise resolving to CCIP request with message details

Throws

CCIPWalletNotSignerError if wallet is not a valid signer

Throws

CCIPLaneNotFoundError if no lane exists to destination

Example

Send cross-chain message

TypeScript

const request = await chain.sendMessage({
  router: '0x...',
  destChainSelector: 4949039107694359620n,
  message: {
    receiver: '0x...',
    data: '0x1337',
    tokenAmounts: [{ token: '0x...', amount: 100n }],
    feeToken: '0xLinkToken',
  },
  wallet: signer,
})
console.log(`Message ID: ${request.message.messageId}`)

simulateLockOrBurn()?

optional simulateLockOrBurn(opts: { amount: bigint; destChainSelector: bigint; finality?: FinalityRequested; onRamp: string; originalSender?: string; receiver?: string; token: string; tokenArgs?: string; tokenReceiver?: string; }): Promise<{ destPoolData: string; destTokenAddress: string; destTokenAmount: bigint; sourcePoolAddress: string; }>

Defined in: chain.ts:2616

Simulate the source pool's lockOrBurn for a prospective token transfer and return the pool-reported destTokenAddress, destPoolData (the value the destination pool's releaseOrMint consumes as sourcePoolData) and destTokenAmount (the post-fee amount the OnRamp writes into the emitted message), plus the resolved source pool address.

Optional; currently implemented for EVM chains. Used by estimateReceiveExecution to feed the destination-liquidity simulation the same source pool data a real transfer would carry.

Parameters

Parameter	Type	Description
`opts`	{ `amount`: `bigint`; `destChainSelector`: `bigint`; `finality?`: `FinalityRequested`; `onRamp`: `string`; `originalSender?`: `string`; `receiver?`: `string`; `token`: `string`; `tokenArgs?`: `string`; `tokenReceiver?`: `string`; }	lane (`onRamp`, `destChainSelector`), `token` and `amount` (source decimals), and optionally `originalSender`, `receiver`, `tokenReceiver`, `tokenArgs`, and the requested `finality`
`opts.amount`	`bigint`	Amount in the source token's decimals
`opts.destChainSelector`	`bigint`	Destination chain selector
`opts.finality?`	`FinalityRequested`	Requested finality (v2 pools take it as the 2nd `lockOrBurn` argument)
`opts.onRamp`	`string`	OnRamp registered on the source Router for the destination chain
`opts.originalSender?`	`string`	Sender of the prospective message
`opts.receiver?`	`string`	Receiver on the destination chain
`opts.token`	`string`	Source token address
`opts.tokenArgs?`	`string`	Message-level `GenericExtraArgsV3.tokenArgs`, passed through to IPoolV2 pools
`opts.tokenReceiver?`	`string`	Token receiver on the destination chain (v3 extraArgs); when set, takes precedence over `receiver` as the pool's `lockOrBurnIn.receiver`, mirroring the OnRamp

Returns

Promise<{ destPoolData: string; destTokenAddress: string; destTokenAmount: bigint; sourcePoolAddress: string; }>

resolved sourcePoolAddress, destTokenAddress + destPoolData as returned by the pool, and the post-fee destTokenAmount

typeAndVersion()

abstract typeAndVersion(address: string): Promise<[string, string, string, string]>

Defined in: chain.ts:1290

Fetch typeAndVersion for a given CCIP contract address.

Parameters

Parameter	Type	Description
`address`	`string`	CCIP contract address

Returns

Promise<[string, string, string, string]>

Promise resolving to tuple:

type - Parsed type of the contract, e.g. OnRamp
version - Parsed version of the contract, e.g. 1.6.0
typeAndVersion - Original (unparsed) typeAndVersion() string
suffix - Suffix of the version, if any (e.g. -dev)

Throws

CCIPTypeVersionInvalidError if typeAndVersion string cannot be parsed

Example

Check contract version

TypeScript

const [type, version] = await chain.typeAndVersion(contractAddress)
console.log(`Contract: ${type} v${version}`)
if (version < '1.6.0') {
  console.log('Legacy contract detected')
}

waitFinalized()

waitFinalized(opts: { abort?: AbortSignal; finality?: number | bigint | "finalized" | "latest"; pollInterval?: number; reorgSafetyBlocks?: number; } & { request: { log: { blockTimestamp: number | bigint; }; }; } | { log: { blockTimestamp: number | bigint; }; }): Promise<BlockInfo | undefined>

Defined in: chain.ts:1017

Confirm a log tx is finalized or wait for it to be finalized.

Parameters

Parameter	Type	Description
`opts`	{ `abort?`: `AbortSignal`; `finality?`: `number` \| `bigint` \| `"finalized"` \| `"latest"`; `pollInterval?`: `number`; `reorgSafetyBlocks?`: `number`; } & { `request`: { `log`: { `blockTimestamp`: `number` \| `bigint`; }; }; } \| { `log`: { `blockTimestamp`: `number` \| `bigint`; }; }	Options containing the request, finality level, and optional cancel promise

Returns

Promise<BlockInfo | undefined>

Some block info at or after tx finalization

Throws

CCIPTransactionNotFinalizedError if the transaction is not included (e.g., due to a reorg)

Example

Wait for message finality

TypeScript

const request = await source.getMessagesInTx(txHash)
try {
  await source.waitFinalized({ request: request[0] })
  console.log('Transaction finalized')
} catch (err) {
  if (err instanceof CCIPTransactionNotFinalizedError) {
    console.log('Transaction not yet finalized')
  }
}

Extended by​

Type Parameters​

Indexable​

Properties​

abort​

apiClient​

apiRetryConfig​

destroy​

Parameters​

Returns​

logger​

network​

verificationsIndexer?​

verifierTransport?​

Methods​

estimateReceiveExecution()?​

Parameters​

Returns​

execute()​

Parameters​

Returns​

Throws​

Throws​

Throws​

Throws​

Examples​

fetchCCVResults()​

Parameters​

Returns​

Throws​

generateUnsignedExecute()​

Parameters​

Returns​

Example​

generateUnsignedSendMessage()​

Parameters​

Returns​

Example​

getBalance()​

Parameters​

Returns​

Throws​

Examples​

getBlockInfo()​

Parameters​

Returns​

Throws​

Example​

getBlockTimestamp()​

Parameters​

Returns​

Deprecated​

getExecutionInput()​

Parameters​

Returns​

See​

getExecutionReceipts()​

Parameters​

Returns​

Example​

getFee()​

Parameters​

Returns​

Example​

getFeeTokens()​

Parameters​

Returns​

Example​

getLaneFeatures()​

Parameters​

Returns​

Throws​

Example​

getLaneLatency()​

Parameters​

Returns​

Throws​

Throws​

Throws​

Remarks​

Extended by

Type Parameters

Indexable

Properties

abort

apiClient

apiRetryConfig

destroy

Parameters

Returns

logger

network

verificationsIndexer?

verifierTransport?

Methods

estimateReceiveExecution()?

Parameters

Returns

execute()

Parameters

Returns

Throws

Throws

Throws

Throws

Examples

fetchCCVResults()

Parameters

Returns

Throws

generateUnsignedExecute()

Parameters

Returns

Example

generateUnsignedSendMessage()

Parameters

Returns

Example

getBalance()

Parameters

Returns

Throws

Examples

getBlockInfo()

Parameters

Returns

Throws

Example

getBlockTimestamp()

Parameters

Returns

Deprecated

getExecutionInput()

Parameters

Returns

See

getExecutionReceipts()

Parameters

Returns

Example

getFee()

Parameters

Returns

Example

getFeeTokens()

Parameters

Returns

Example

getLaneFeatures()

Parameters

Returns

Throws

Example

getLaneLatency()

Parameters

Returns

Throws

Throws

Throws

Remarks