# Chainlink nodes v1
Source: https://docs.chain.link/chainlink-nodes/v1

> For the complete documentation index, see [llms.txt](/llms.txt).

This section provides specific information for running and configuring v1.x.x Chainlink nodes. First you will [run a chainlink node](/chainlink-nodes/v1/running-a-chainlink-node) that implements the [basic request architecture model](/architecture-overview/architecture-request-model). Then you will [fulfill requests](/chainlink-nodes/v1/fulfilling-requests) initiated by a smart contract.

The [Configuring Nodes page](/chainlink-nodes/configuring-nodes) explains how to move from environment variables to TOML. The [Node Config](/chainlink-nodes/v1/node-config) page lists the TOML settings.