Claude Parallel Tool Use: My Agent Loop Crashed on 388 of 1,200 Runs
This story is from 2026-10-02. It is preserved in the archive; the latest stories are on the live feed.
My codebase Q&A agent ran 1,200 times in its first week. 388 of those runs died with the same HTTP 400. The other 812 worked fine, which is the worst possible ratio: too low to look like a broken deploy, too high to ignore. The cause was one line I'd copied from my own earlier prototype: next(b for…
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- 2026-10-02 09:02 · DEV Community — AI
Claude Parallel Tool Use: My Agent Loop Crashed on 388 of 1,200 Runs