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Circle wallets and USDC

Circle’s screening runs inside Circle and its webhooks are notifications, so the agent asks Immiscible before it transfers.

Circle issues USDC and EURC, and its Wallets product signs transfers for developer-controlled and user-controlled wallets. Its Compliance Engine screens transactions against Circle-managed rules and your block and allow lists, and can block, freeze or send a transfer for manual review inside Circle. Webhook notifications are signed (X-Circle-Signature, X-Circle-Key-Id) and report what happened.

There is no outside approval call a service like Immiscible could answer before a transfer is signed.

#How to use them together

  • The agent asks Immiscible first, through the SDK’s decideThenSign or decide_then_sign, and creates the Circle transfer only after an allow whose receipt covers it. See Crypto payments.
  • USDC is priced from public sources at the moment of each decision, and checked against its peg, never assumed to be one dollar. See Crypto rates.