Docs / x402 boundary
Inspect before authorization.
Deployed routes issue typed x402 challenges carrying an exact maximum charge. Nothing here signs an authorization on your behalf: the browser, the SDK and the MCP server all stop at the challenge and hand it to you.
What the contract binds
- 01
Challenge
Binds network, asset, recipient, operation, amount, expiry and typed-data domain.
- 02
Approve
Shows the exact maximum charge and allows cancellation before anything is signed.
- 03
Settle
Verifies the authorization and records one durable result.
- 04
Reconcile
Quarantines unknown state rather than guessing or signing again.
Frozen interface
What these guides describe.
- Release candidate
- clervo-private-core-2026-08-02.2
- Interface hash
- sha256:2773690eda2ed6c89461c98f1537fccc5ae648f37845eb7a5a620952647a39b4
- Public callable
- yes