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Explore Circle's SDKs to learn and simplify your development with the Circle Platform

Get the public key and algorithm used to digitally sign webhook notifications. Verifying the digital signature ensures the notification came from Circle. In the headers of each webhook, you can find 1. `X-Circle-Signature`: a header containing the digital signature generated by Circle. 2. `X-Circle-Key-Id`: a header containing the UUID. This is will be used as the `ID` as URL parameter to ...

Initiates a client for Circle's Developer Controlled Wallets.

Sign the EIP-712 typed structured data from a specified developer-controlled wallet. Please note that not all the Dapps currently support Smart Contract Account (SCA), the difference between EOA and SCA can be found in the account types guide, and you can check the list of Dapps that support SCA: https://eip1271.io/.

What's next Check out the Paymaster Quickstart for a complete example of how to pay for gas fees with USDC in a smart wallet. See Paymaster Addresses and Events for information on how to access the Paymaster contracts and the events they emit.

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Circle’s Customer Care Team is available 24/7 and aims to respond within one day. Read through to find out how to contact the team via email.

The optional idempotency key. An idempotency key is a unique identifier used to identify and handle duplicate requests in order to ensure idempotent behavior, where multiple identical requests have the same effect as a single request. We will generate one if you do not provide it.

Lists all transactions. Includes details such as status, source/destination, and transaction hash.