Multi-agent debugging pain: per-agent logs can't show which output changed the next agent's decision

mageblex · reddit · 2026-09-03

A developer on Reddit vents about debugging multi-agent systems: individual per-agent logs are nearly useless when reconstructing a timeline by hand, because you can't see which output changed the next agent's decision.

Their argument: per-agent logs can still exist, but shouldn't be the main view — what's needed is a single unified trace linking causal influence across agents. It highlights a common gap in current agent observability tooling: cross-agent causal tracing.

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