ScaffoldBench

RunOpus 5.5repeat 2

Plan-execute-verify on Cancel one line of a multi-line order

claude-opus-5-5__plan-execute-verify__ecommerce-medium__r2

Score

1.000

passed
design ran as designed
Cost
$0.113
Latency
31.7s
setup 0.0s, grading 0.0s
Turns
17
Tool calls
12
Subagents
0
Tokens in / out
51k / 2.4k
40,094 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.
  • The plan was a plan: heldplan-execute-verify.planThe planner’s reply was read through its schema and held at least one step.
  • Every verdict was read: heldplan-execute-verify.verdictsEvery review round ended with a verdict read from the schema reply, not a default.
  • The loop did what its verdicts said: heldplan-execute-verify.loopEvery verdict that called for a revision got one, and nothing was revised without such a verdict.
  • Each call was shown the right tools: heldplan-execute-verify.toolsThe planner was shown no tools, the verifier the read-only ones, and the executor and reviser the full toolset.

Phases

Plan: 0.0s to 9.1s, finished, 0 tool calls, $0.019
Execute: 9.1s to 24.0s, finished, 7 tool calls, $0.060
Verify: 24.0s to 31.7s, finished, 5 tool calls, $0.035

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

PhaseDurationCostTurnsToolsModel
Plan9.1s$0.01920claude-opus-5-5
Execute14.9s$0.06087claude-opus-5-5
Verify7.6s$0.03575claude-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 plan-execute-verify --tasks ecommerce-medium --models claude-opus-5-5 --repeats 1

Score breakdown

  • passThe mouse line is cancelled and refunded to the card for exactly what was paid
    1.00weight 0.38

    line L1: status=cancelled refundedCents=7350 method=card

  • passExactly the cancelled quantity went back into stock
    1.00weight 0.25

    P-MOU stock=32

  • passThe other lines of the order are still on their way
    1.00weight 0.25
  • passRead the order before changing it
    1.00weight 0.13

Penalties

No penalties were applied.

Scorer metadata

tool calls
12
failed tool calls
0
distinct tools
7

Final answer

I've cancelled the wireless mouse on Marcus Ade's order O-2003 and refunded £73.50 to his card. The rest of the order is still set to ship as planned.

  • Checks first: O-2003 is Marcus's order (C-200). The mouse was on one line only (L1, product P-MOU, 2 units), and it hadn't shipped. That makes it a cancellation, not a return.
  • Cancelled: Only the mouse line.
  • Refunded: RF-1, £73.50 to his card. That's what he was actually charged for the mouse. The MOUSE25 discount on the order means this is less than the £98.00 list price for two mice (2 × £49.00).
  • Stock: The mouse wasn't backordered, so stock had been held for it. I put both units back, and mouse stock went from 30 to 32.
  • Rest of the order: The hub (1 unit) and cable (3 units) lines are unchanged and still due to ship. The shipping address (5 Kingfisher Court, Leeds LS2 7EE, UK) is the same, and the order is still "pending". The order now shows £73.50 refunded out of £199.50 paid.

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.