FailEcho gives coding agents memory of past errors so they stop retrying blind
EvenAd1183 · reddit · 2026-09-15
A developer built FailEcho, a service that records how an agent's tool-call failures were resolved so new sessions don't rediscover the same 422s. It runs post-call with a 2s timeout, sends only metadata (service, operation, error class, fix), and is MIT-licensed and self-hostable. Setup is a single MCP config block or one POST to the API. The author is asking whether failure knowledge is worth sharing across users, since services rename fields for everyone at once, and promises to publish the findings.
Related event: FailEcho Helps Agents Remember Past Errors Instead of Retrying Blindly(2 posts)→
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