Diagnostic Reference

When verification fails, these diagnostic codes tell you exactly why. Paste an error response or search by code to understand what happened and how to resolve it.

Paste Error to Detect

Showing 21 of 21 error codes

Understanding Diagnostic Codes

- Verification issues are often visible in the Proof Explorer—step through the process to find where it diverges
- Identity format problems? Validate in the Identity Foundation tool
- Codes prefixed with XMCP_I_ indicate protocol-level verification issues
- Lowercase codes like insufficient_scope indicate permission boundary violations

Diagnostic Reference

Paste Error to Detect

Invalid Proof Signature

Malformed JWS

Nonce Replay Detected

Timestamp Skew Exceeded

DID Not Found

Invalid Public Key

Handshake Protocol Error

Session Invalid or Expired

Delegation Lacks Required Scope

Delegation Expired

Delegation Not Yet Valid

Budget Limit Exceeded

Rate Limit Exceeded

Delegation Revoked

Registry Mirror In Progress

Agent Claim Verification Failed

Configuration Error

Runtime Error

Authorization Required

Invalid Resume Token

Resume Token Expired

Understanding Diagnostic Codes