ScaffoldBench

RunOpus 5.5repeat 2

Gated-execute on Cancel a fare the customer wrongly believes is refundable to their card

claude-opus-5-5__gated-execute__airline-hard__r2

Score

1.000

passed
design ran as designed
Cost
$0.126
Latency
39.5s
setup 0.0s, grading 0.0s
Turns
19
Tool calls
14
Subagents
2
Tokens in / out
59k / 2.8k
47,934 read from cache

Did the design run?

every check held
  • Run completed: heldharness.run-completedThe environment was built, the architecture returned and grading finished, none of them throwing.
  • No API failures: heldharness.apiNo model call failed at the API.
  • Every call ended: heldharness.calls-endedEvery call ended with a result, or was stopped by the run's own limits.
  • No harness tool denied: heldharness.harness-toolsThe sandbox guard never denied a harness tool, nor a tool the session itself offered.
  • Tool servers connected: heldharness.mcp-connectedEvery tool server the harness gave a call was connected when the session started.
  • No foreign tool servers: heldharness.mcp-hermeticNo call loaded a tool server the harness did not give it.
  • Builtin tools: heldharness.builtin-toolsA check recorded with the run.
  • Structured replies arrived: heldharness.structured-outputEvery call that asked for structured output and ran to the end got it.
  • No silent fallbacks: heldharness.not-degradedNo phase fell back on a default (an empty plan, a default winner) instead of its output.
  • Every state change was reviewed: heldgated-execute.reviewedEvery call that changed the world had been allowed by a review before it ran, counted from the world’s own journal.
  • Every decision was read: heldgated-execute.decisionsEvery review that ran to its end gave its decision through the schema; an unreadable one is a denial.
  • Each call was shown the right tools: heldgated-execute.toolsThe executor was shown the task’s full toolset and each reviewer the read-only tools.

Phases

Execute: 0.0s to 39.5s, finished, 6 tool calls, $0.053
Review 1: cancel_reservation: 10.5s to 21.6s, finished, 4 tool calls, $0.037
Review 2: issue_refund: 23.5s to 33.7s, finished, 4 tool calls, $0.037

Drawn from the phase records: timing and cost per call, no tool calls or messages.

PhaseDurationCostTurnsToolsModel
Execute39.5s$0.05376claude-opus-5-5
Review 1: cancel_reservation11.1s$0.03764claude-opus-5-5
Review 2: issue_refund10.2s$0.03764claude-opus-5-5

The call-by-call replay is not published for this run. Traces are large, so the repository keeps 9 of this run set’s 900 and leaves the rest out; the score, phases and final answer on this page come from the committed run record.

Runs you can replay

Record this cell yourself: npm run bench -- run --strategies gated-execute --tasks airline-hard --models claude-opus-5-5 --repeats 1

Score breakdown

  • passReservation is cancelled
    1.00weight 0.29
  • passSettled with exactly one ledger entry, in the right form and for the right amount
    1.00weight 0.57

    expected a single travel_credit entry of 24800 cents; ledger holds 1 entries

  • passThe cancelled seat went back into inventory
    1.00weight 0.14

Penalties

No penalties were applied.

Scorer metadata

tool calls
14
failed tool calls
0
distinct tools
6

Final answer

I cancelled reservation R3311 and gave Marcus Bell the full $248.00 as travel credit. I could not put the money back on his card as he asked, because the refund rules don't allow it for this booking.

  • Why not his card: His ticket is basic economy, which can't be refunded on its own. The trip insurance only pays back to the card if he cancels at least 14 days before departure. The refund policy gives today's date as 2026-07-28 and the flight is on 2026-08-05, so he cancelled 8 days out. That close to departure, the insurance turns the fare into travel credit and no money goes back to the card.
  • No fee taken: He is a platinum member, so the $50 cancellation fee is waived and he keeps the full $248.00.
  • What I did: There was nothing on the reservation's ledger beforehand. I cancelled R3311, which released his seat on AA660 (San Francisco to Boston, 2026-08-05). I then recorded the $248.00 travel credit as the reservation's only ledger entry, which closes it out.

One thing doesn't match: my environment says today is 2026-10-06, but the refund policy tool says 2026-07-28. I went by the policy tool's date because it's what the rules use, and the flight is still listed as scheduled. If 2026-10-06 is the real date, the flight has already left. The 14-day window would still have been missed, so he would get travel credit either way and none of this changes.

Provenance of the numbers on this page

run set
scaffold-or-scale-v1
models
Haiku 4.5, Sonnet 5.5, Opus 5.5
effort
high
repeats
2
fixtures
replay
runs
900 / 900
strategy cost
$354.44
judge cost
$9.19
wall clock
9h 48m
git
fce5807b2d

Cost excludes judge calls, which are tracked separately so a scoring model never flatters or penalises an architecture. Every figure on this site is read from results/ at build time.