MCPX_UNKNOWN_UNCLASSIFIED
Severity: error Domain: Unknown
What happened
mcpproxy's error classifier didn't recognise the underlying failure. This is a fallback code: every failure gets some code, but for novel error shapes the catalog doesn't have a specific one yet.
When you see this code, it usually means mcpproxy needs a new specific code for the situation — please file a bug so we can add it.
How to fix
File a bug report
The error panel includes a Report a bug fix-step that pre-fills the issue template. Or:
mcpproxy feedback "MCPX_UNKNOWN_UNCLASSIFIED for <server-name>: <one-line summary>"
Please include:
- The full error text shown in the panel.
- The output of
mcpproxy upstream logs <server-name> --tail 100. - Your platform and mcpproxy version (
mcpproxy version). - Whether the upstream is HTTP, stdio, isolated, etc.
Workarounds
- Restart the affected server:
mcpproxy upstream restart <server-name>. - Try Docker isolation, or temporarily disable it.
- Use
mcpproxy doctor --server <name>for an interactive walk-through — it sometimes catches issues the runtime classifier misses.