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INVALID_SIGNATURE

Message. EIP-712 signature did not recover to the claimed agent address

Hint. Verify the agent's signer address matches the IOU's agentAddress. The domain must match the published 402 response exactly.

Wire shape

{
  "error": {
    "code": "INVALID_SIGNATURE",
    "message": "EIP-712 signature did not recover to the claimed agent address",
    "hint": "Verify the agent's signer address matches the IOU's agentAddress. The domain must match the published 402 response exactly.",
    "docsUrl": "https://docs.tollgatepay.com/errors/invalid-signature"
  }
}

Canonical URL

https://docs.tollgatepay.com/errors/invalid-signature — this URL is hard-coded into the 402/403/451 docsUrl field. It is stable; renaming the slug requires a migration plan.

Related codes