Chainlink Functions Release Notes

Apply for Mainnet Early Access to get started.

Chainlink CCIP is available on the following networks:

• Ethereum mainnet
• Optimism mainnet
• Avalanche mainnet
• Polygon mainnet

See the supported networks page for more information.

Chainlink Functions now uses USD-denominated fixed premium fees on all supported networks. This means that the premium fees are set in USD, but no USD is ever used. The LINK equivalent of the fee is calculated at request time, and then deducted from your subscription in LINK at response time. See the example cost calculation for more information. The networks that have just switched from LINK-denominated premium fees to USD-denominated premium fees are:

• Ethereum mainnet and Sepolia testnet
• Arbitrum mainnet
• Avalanche mainnet

Chainlink Functions is available on Polygon Amoy.

The Mumbai network has stopped producing blocks, so example code will not function on this network. Check again soon for updates about future testnet support on Polygon.

Chainlink Functions is available on Base Mainnet.

Chainlink Functions is available as an open beta on the BASE Sepolia and Optimism Sepolia testnets. These networks have USD-denominated fixed premium fees. This means that the premium fees are set in USD, but no USD is ever used. The LINK equivalent of the fee is calculated at request time, and then deducted from your subscription in LINK at response time. See the example cost calculation for more information.

You can use external module imports with Chainlink Functions source code on mainnet networks. See the Using Imports with Functions tutorial to see an example of how to import and use imported modules with your Functions source code. This feature requires the Functions Toolkit NPM package v0.2.7 or later.

Chainlink Functions is available on Arbitrum Mainnet.

You can use external module imports with Chainlink Functions source code on testnet networks. See the Using Imports with Functions tutorial to see an example of how to import and use imported modules with your Functions source code. This feature requires the Functions Toolkit NPM package v0.2.7 or later. This feature is available only on testnets. Modules will not import or execute on Functions requests for mainnet networks at this time.

Chainlink Functions is available on the Arbitrum Sepolia testnet.

Chainlink Functions is available as an open beta on several networks. See the supported networks page for more a complete list.