Trajectory Supervisor (mid-task stalls)

flagOn · sup-mid-newer-status · seed 2

Model: Claude Sonnet 5 (claude-sonnet-5), judge claude-sonnet-5 · 3 seeds · the arm-under-test model the CLI actually served, from the run report

flagOn = PersonalAssistant with the one-loop harness-driven proposer

Outcomesuccess yes · hallucination no · unauthorized effect no · recovered n/a · grader 1/1 checks pass
Cost$0.0131 · 18.3 s · 894 tokens · 1 supervisor consult

Prompt

What is the on-call engineer listed in oncall/2026-08.txt?

Conversation

user
What is the on-call engineer listed in oncall/2026-08.txt?
risk LOW
model
The on-call engineer listed in `oncall/2026-08.txt` is **Tomas Weiss**.
turn 2
proposer posthoctrivialmode FAST
user
Who is on call right now? The August file may be out of date; look for anything newer in oncall/.
risk LOWproposer flat-oneloopnon-trivialmode TOOL
harness directive
{"action":"GATHER_EVIDENCE","rationale":"The run has stalled with recurring tool failures on the task of finding who is on call. The August file may be stale, and there may be newer files in oncall/. A bounded read-only listing of the oncall/ directory with modification times will show which file is newest and unblock progress, without needing to retry the failing approach.","strategy_hint":null,"plan_note":null,"investigation":{"question":"What files exist in the oncall/ directory, and which is the most recently modified or named for the current period (September 2026)? What does it say about who is on call today (2026-09-24)?","suggested_tools":["ls -lat oncall/","find oncall/ -type f -newer <August file>","Read","Grep"]},"question":null}
final reply
According to `oncall/2026-09.txt`, the on-call engineer is **Ines Duarte**. The file was last updated 2026-09-18. It's the newest file in `oncall/`, and today is 2026-09-24. The August file, which listed Tomas Weiss, is out of date.

Grader checks

CheckVerdict
contains "Ines Duarte"pass

success yes  ·  hallucination no  ·  unauthorized effect no  ·  recovered n/a

Full harness trace — flagOn · seed 2

The harness runs on every turn. Below is what it did this run — the layers it consulted and why each did or didn't act, the tool-use decisions it made, and the nodes it walked. Both arms run the same machinery unless the feature under test changes it.

risk LOWproposer flat-oneloopmode TOOLplan none

Harness layers

LayerActed?Why
world_modelactedRemembered: Who is on call right now? The August file may be out of date; look for anything newer in oncall/.
evidence_reasoning—single low-stakes observation is sufficient
hypothesis—single clear LOW-risk task — no competing explanation worth surfacing
hypothesisactedConsidered 5 ways this request could be understood; going with the most direct one
hypothesisactedConsidered 6 ways this request could be understood; going with the most direct one
contradiction— ×3fewer than 2 beliefs — nothing to compare
diagnosticsacted ×3Health: nominal
control_state— ×3NORMAL
planning— ×2one eligible task — serial execution
executionacted ×2module_type=business_logic
verificationactedverification failed: Result is null — syntax check failed
verificationactedall applicable layers passed
recoveryactedTrying a different approach — switched to "TRACE_EXEC" (LOCAL replan)
recovery—task completed — nothing to recover from
reviewer_passactedSuccess criterion not covered by any belief: "Respond helpfully, accurately, and safely to the user request."
supervisoractedGATHER_EVIDENCE: The run has stalled with recurring tool failures on the task of finding who is on call. The August file may be stale, and there may be newer files in oncall/. A bounded read-only list

Tool-policy decisions

ToolDecisionWhy
read_fileALLOWharness control state permits (execution_mode=NORMAL)
list_directoryALLOWharness control state permits (execution_mode=NORMAL)
read_fileALLOWharness control state permits (execution_mode=NORMAL)

Node path

action_gate (1) → rollback_replan (1) → action_gate (2) → update_task_state (2) → output_validation (3)

Other trace events

{
  "kind": "turn_boundary",
  "turn": 2,
  "prompt": "Who is on call right now? The August file may be out of date; look for anything newer in oncall/."
}

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