CCTP API

Fetch attestations and support native USDC transfers across blockchains using Cross-Chain Transfer Protocol.

CCTP is permissionless and open to any wallet. Burn USDC on a source blockchain, then mint it on the destination once Circle issues the corresponding attestation. No API key required.

Get started

CCTP documentation

Learn how Cross-Chain Transfer Protocol works.

Supported chains and domains

See which blockchains CCTP supports and the domain IDs you’ll need.

Endpoint categories

CCTP V2

Current endpoints for messages, attestations, and burn fees.

CCTP V1 (Legacy)

Legacy endpoints for existing V1 integrations.