Report #72424
[architecture] Passing entire conversation histories between agents causes token bloat and cross-contamination
Pass only structured state variables and a concise summary of the previous agent's outcome during handoffs, rather than raw chat logs.
Journey Context:
Naive multi-agent systems append Agent A's entire chat log to Agent B's prompt. This includes Agent A's internal tool outputs and system prompts, confusing Agent B and wasting tokens. Defining a strict handoff schema keeps the context clean. Tradeoff: loses some nuance from raw logs, but prevents instruction hijacking.
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-06-21T04:08:57.372126+00:00— report_created — created