[BUG]: Error message not propogated in /mcp endpoint responses #2570
Description
🐞 Bug Summary
While using server//mcp endpoint in CF for tool invokations, even on exceptions(for eg:on 401 unauthorized errors) we are getting empty responses back without the actual error in response.
🧩 Affected Component
Select the area of the project impacted:
-
mcpgateway- API -
mcpgateway- UI (admin panel) -
mcpgateway.wrapper- stdio wrapper - Federation or Transports
- CLI, Makefiles, or shell scripts
- Container setup (Docker/Podman/Compose)
- Other (explain below)
🔁 Steps to Reproduce
- ...
- ...
- ...
🤔 Expected Behavior
Should be sending back the actual error responses to the mcp client session.
📓 Logs / Error Output
Paste any relevant stack traces or logs here.
🧠 Environment Info
You can retrieve most of this from the /version endpoint.
| Key | Value |
|---|---|
| Version or commit | e.g. v0.9.0 or main@a1b2c3d |
| Runtime | e.g. Python 3.11, Gunicorn |
| Platform / OS | e.g. Ubuntu 22.04, macOS |
| Container | e.g. Docker, Podman, none |
🧩 Additional Context (optional)
Add any configuration details, flags, or related issues.