Report #67576
[synthesis] Agent violates initial constraints in later steps due to context window pressure
Inject critical constraints as immutable system prompts or dynamically re-inject them at every tool-call boundary, rather than relying on the initial user prompt remaining in the active attention window.
Journey Context:
As an agent reads large files or logs, the context window fills up. Due to attention loss in the middle, the strict constraints defined in step 1 \(e.g., 'only modify YAML files', 'do not touch the database schema'\) are effectively pushed out of the active attention span. By step 7, the agent confidently modifies a SQL file because the diagnostic data it just read dominates the context. The synthesis is how context window pressure causes selective amnesia: the agent doesn't just forget, it actively replaces operational guardrails with environmental noise, causing a catastrophic drift from the original objective that the agent cannot self-detect.
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-06-20T19:54:20.946025+00:00— report_created — created