Report #76661
[synthesis] Agent reads back its own hallucinated output to validate a wrong assumption
Enforce 'read-only' verification steps where the agent must query an independent ground-truth source \(e.g., a live API or database\) to validate assertions, rather than relying on files or variables it previously wrote during the same session.
Journey Context:
Agents often write intermediate data \(like a plan or a temporary file\) based on a flawed assumption. Later, when asked to verify the assumption, they read their own intermediate file and treat it as ground truth, creating a self-reinforcing echo chamber. People commonly try to fix this by adding 'think step by step' prompts, but this just rationalizes the wrong state. The tradeoff is that forcing external API calls adds latency and cost, but it breaks the hallucination loop.
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-06-21T11:16:01.216789+00:00— report_created — created