ScaffoldBench

RunOpus 5.5repeat 1

Single on Cancel one line of a multi-line order

claude-opus-5-5__single__ecommerce-medium__r1

Score

1.000

passed
design ran as designed
Cost
$0.045
Latency
14.8s
setup 0.0s, grading 0.0s
Turns
7
Tool calls
6
Subagents
0
Tokens in / out
23k / 1.1k
20,016 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.
  • Each call was shown the right tools: heldsingle.toolsThe agent was shown exactly the task’s tools, none missing and none extra.

Phases

Main: 0.0s to 14.8s, finished, 6 tool calls, $0.045

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

PhaseDurationCostTurnsToolsModel
Main14.8s$0.04576claude-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 single --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
6
failed tool calls
0
distinct tools
6

Final answer

I cancelled the wireless mouse on Marcus Ade's order O-2003 and refunded what he paid for it to his card. The rest of the order is unchanged and will ship as planned.

  1. Cancelled: line L1 (Wireless Mouse, 2 units) had not shipped, so it was cancelled. It was the only line I cancelled.
  2. Refunded: £73.50 went back to his card (refund RF-1). That is what he was actually charged for the mouse, not the list price of 2 × £49.00 = £98.00. The order used discount code MOUSE25, which lowered the line's price, and a refund can't be more than what he paid.
  3. Restocked: the 2 mice went back into stock, taking it from 30 to 32. The line wasn't marked as backordered, so its stock had been set aside for it.

The USB hub (L2, 1 unit) and the cables (L3, 3 units) are still pending, and the order status is still "pending."

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.