Regenerate a Verification
Invalidates the prior link and inquiry and opens a fresh attempt for the same subject
(reason regenerated). Use when a link may have been forwarded or exposed — the old flow
is dead the moment this returns. Responds 201 with the new attempt and its secret-once
hosted_link.
Authorizations
OAuth 2.0 client_credentials grant (RFC 6749 §4.4) bound to a DPoP keypair (RFC 9449).
Flow (every authenticated /v1 call requires both an access token AND a fresh per-request DPoP proof):
- Register a credential via the merchant portal. Anton issues a
client_id(ant_oc_<env>_<32hex>) and aclient_secret(ant_ocs_<env>_<48hex>, shown ONCE). The portal generates an ES256 or Ed25519 DPoP keypair in your browser; you store the private half. - Mint an access token:
POST /oauth/tokenwithAuthorization: Basic <client_id:client_secret>andContent-Type: application/x-www-form-urlencoded. Body:grant_type=client_credentials. ADPoPheader carrying a proof signed for the token endpoint is required (noathclaim on this proof). - Use the token: send
Authorization: DPoP <access_token>plus a freshDPoP: <proof>header on every/v1request. The proof JWT MUST carryhtm(request method),htu(request URL, no query/fragment),iat(within ±60s),jti(unique within 5 min), andath(SHA-256 of the access token, base64url).
Tokens expire in 1 hour in production / staging and 8 hours in sandbox. There are no refresh tokens — call /oauth/token again with your secret. Anton's public signing key is published at /.well-known/jwks.json.
OpenAPI 3.0 has no native DPoP scheme; this declaration plus dpopHeader together convey both the access-token Authorization and the per-request proof header.
Per-request DPoP proof JWT (RFC 9449). MUST accompany the Authorization: DPoP <access_token> header on every protected operation. The proof is signed by the merchant's private DPoP key and carries htm, htu, iat, jti, and ath claims.
Headers
Unique key identifying this operation. Sending the same key twice returns the original response instead of creating a duplicate. Keys are retained for 24 hours.
255Path Parameters
Verification attempt ID.
^vrf_[a-zA-Z0-9]+$Response
Fresh attempt opened; prior link invalidated.
One verification attempt. hosted_link is secret-once: present only on the response
that minted it (create / resend / regenerate / re-verify) and never on a read.