CCTP Relayer

Self-Service vs Auto-Relaying

Most CCTP bridges (like cctp.money or Noble Express) use auto-relayers — background services that automatically complete your transfer after you burn USDC on the source chain.

⚠️ The Problem with Auto-Relayers

• Single point of failure: If the relayer service goes down, your funds can get stuck mid-transfer
• No recovery options: You're dependent on the service provider to fix issues
• Opaque process: Hard to debug what went wrong when transfers fail
• Rate limits & congestion: During high traffic, relayers may delay or fail

✅ Self-Service Relaying (This Tool)

• You control the relay: Sign and submit the destination chain transaction yourself
• Recovery anytime: Resume stuck transfers days or weeks later
• Full transparency: See every step of the CCTP process
• Works with any source*: Recover failed transfers from other services

* Some CCTP transfers set a destination_caller restriction, limiting who can complete the relay. This could be the receiver's wallet, a specific relayer service, or another designated address. If you encounter this error, you'll need to use the wallet that was specified as the authorized caller.

How it works: After burning USDC on Noble, Circle's attestation service signs the message. This tool lets you fetch that attestation and submit the final "mint" transaction to the destination chain yourself.