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Scheduler fabricates mention links in task outputs #554

@sentry-junior

Description

@sentry-junior

Scheduled task outputs sometimes contain fabricated Slack mention links (e.g. @username) that were never part of the original task definition or tool results. The scheduler appears to hallucinate these references when composing reminder or status messages.

Example symptom:

  • A scheduled reminder message included a @david mention link that was not present in the task contract or any tool output — it was synthesized by the model during output generation.

Scope:

  • Affects scheduled task execution outputs
  • Likely a prompt/instruction issue where the model infers or invents user mentions rather than grounding them in task data

Workaround: None currently.

Action taken on behalf of David Cramer.

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