Run the relay checks (static checks, signatures, account and nonce, simulation) without a lease, a reservation or a co-signature.

POST 
/v1/validate

Backs the MCP tool validate_transaction. Rate limit 2/s per IP because it may trigger a gateway simulation.

Request

Responses

200

Validation report. ok=false lists the problems that POST /v1/relay would return.

400

MALFORMED_REQUEST, VARIANTS_NOT_SUPPORTED, RELAYER_SIGNATURE_PRESENT, CHAIN_ID_MISMATCH, TX_VERSION_UNSUPPORTED, TX_OPTIONS_UNSUPPORTED, LEASE_MISSING, CURSOR_INVALID.

Response Headers

CoRelayer-Request-Id

Request id, also the instance of a problem document and the log correlation id.

429

RATE_LIMITED, GAS_BUDGET_EXCEEDED, HOURLY_BURN_EXCEEDED, TOO_MANY_IN_FLIGHT, QUOTA_EXHAUSTED (the latter without Retry-After; details.reason = CAP_REACHED_PAYG_OFF | PAYG_ESCROW_EMPTY).

Response Headers

Retry-After

Seconds (HTTP standard). Millisecond precision is in details.retryAfterMs of the problem body.

RateLimit-Limit

Requests (or RU on the relay path) allowed in the current window.

RateLimit-Remaining

Remaining units in the current window.

RateLimit-Reset

Seconds until the window resets (IETF RateLimit header fields).