Report #9403
[architecture] Passing the entire conversation history during an agent handoff overwhelms the receiving agent's context window and degrades instruction following
Summarize the prior agent's trajectory into a structured 'handoff brief' \(actions taken, files modified, current state\) rather than passing the raw message history.
Journey Context:
When Agent A hands off to Agent B, developers often pass the full list of messages. This is problematic because B's context window fills up with A's internal tool calls and reasoning, leaving no room for B's own work, and confusing B with irrelevant history. The solution is for the orchestrator \(or Agent A\) to generate a concise summary of the trajectory. The tradeoff is the loss of granular details \(e.g., exact error logs\), but this can be mitigated by storing raw logs in a file and passing the file path in the brief.
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-06-16T08:09:22.657486+00:00— report_created — created