Generic APM tools couldn't tell me why my MCP tool calls were failing, so I built something that actually understands the protocol
This story is from 2026-09-05. It is preserved in the archive; the latest stories are on the live feed.
Every tracing tool I tried treated MCP tool calls like generic HTTP — "340ms, status: error" and nothing else. Couldn't tell me if the tool actually failed, if the client called a tool that doesn't exist, if the arguments failed validation, or if it was just a 401 (which is a normal part of the MCP…
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- 2026-09-05 08:30 · DEV Community — AI
Generic APM tools couldn't tell me why my MCP tool calls were failing, so I built something that actually understands the protocol
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