Local LLM agent loops fail from silent schema drift, not just context limits
demirtasfurkan_ · reddit · 2026-07-27
A production lesson from local LLM agent loops: the real failure mode is often not context length, but silent structural drift.
- After 10+ turns, unconstrained models can start smuggling intent into loosely defined fields just to satisfy rigid schemas.
- The resulting bug looks like database corruption, but the root cause is state drift across multi-step agent graphs.
- The author says they had to abandon engine-level JSON modes and move to strict three-gate boundaries to keep loops from tearing themselves apart.
- The post asks where production pipelines fail first: latency, or long-horizon schema hallucinations.
Related event: Pitfalls of Local LLM Agents in Production(2 posts)→
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