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.Documentation Index
Fetch the complete documentation index at: https://developers.circle.com/llms.txt
Use this file to discover all available pages before exploring further.
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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.