MCP tools can get silently dropped by agents — dev builds daily cross-client monitor
OkNeighborhood1021 · reddit · 2026-11-05
An MCP server developer highlights a silent failure mode: a client update or model switch can quietly stop your tools from being called — no errors, just vanished calls visible only in logs. To validate the pain point, they built a monitor that runs identical prompts daily across Claude, Cursor, ChatGPT, and Codex and flags tools that stop getting invoked, asking the community how others detect this today.
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