Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
MCPArea: what it touches
Internal ChangesKind: in v2.1.268,
Internal ChangesSection of the release
What
When the tengu_mcp_claudeai_proxy_401 telemetry event records a proxyErrorCode, that value is now passed through a validator that only allows codes matching a simple letters/numbers/underscore/hyphen pattern starting with a letter. Any code that doesn't match is reported as "nonconforming" instead of being logged raw.
Why
This prevents arbitrary or malformed error code strings from being logged verbatim in telemetry, keeping the recorded data predictable and safe.
