fix(client): map bare HTTP 401/403 to distinguishable JSON-RPC errors

Closed
SG
3mo ago
+67-0

Bare auth failures were collapsing into the generic "Server returned an error response" fallback, so agents could not handle operation-specific denials without tearing down the session. Surface Unauthorized/Forbidden with http_status metadata instead.

Fixes #1295

Motivation and Context

How Has This Been Tested?

Breaking Changes

Types of changes

  • Bug fix (non-breaking change which fixes an issue)
  • New feature (non-breaking change which adds functionality)
  • Breaking change (fix or feature that would cause existing functionality to change)
  • Documentation update

Checklist

  • I have read the MCP Documentation
  • My code follows the repository's style guidelines
  • New and existing tests pass locally
  • I have added appropriate error handling
  • I have added or updated documentation as needed

Additional context