ScaffoldBench

RunOpus 5.5repeat 2

Single on Redirect the order that has not shipped

claude-opus-5-5__single__ecommerce-easy__r2

Score

1.000

passed
design ran as designed
Cost
$0.063
Latency
14.2s
setup 0.0s, grading 0.0s
Turns
6
Tool calls
5
Subagents
0
Tokens in / out
23k / 855
17,080 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 14.2s, finished, 5 tool calls, $0.063

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

PhaseDurationCostTurnsToolsModel
Main14.2s$0.06365claude-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-easy --models claude-opus-5-5 --repeats 1

Score breakdown

  • passThe order that has not shipped carries the new address
    1.00weight 0.43

    O-1001 address: 7 Quarry Rise, Sheffield S11 8XZ, UK

  • passThe edit did not spill onto the order already in transit
    1.00weight 0.29
  • passLooked up which order was still open before editing one
    1.00weight 0.14
  • passChecked the state of the order already in transit
    1.00weight 0.14

Penalties

No penalties were applied.

Scorer metadata

tool calls
5
failed tool calls
0
distinct tools
3

Final answer

I've put Dana's new address on her order that hadn't shipped, and her order already in transit is unchanged.

  • O-1001 (not shipped yet): The address changed from 12 Alder Lane, Bristol BS1 4TR, UK to 7 Quarry Rise, Sheffield S11 8XZ, UK. Both items on it (1 × P-KEY and 2 × P-CAB) are still waiting to ship, so they'll go to the new address.
  • O-1002 (in transit): It shipped on 2026-07-07 and still shows 88 Old Mill Road, Bristol BS3 2QQ, UK. I checked it again after the change and nothing on it moved: same status, same address, no refunds. The store's rules don't allow changing the address on a shipped order, so this parcel will arrive at that Bristol address.

One thing you may want to check: her two orders had different old addresses (12 Alder Lane and 88 Old Mill Road). This didn't affect what I did, but it's worth knowing which one she actually lived at. If 88 Old Mill Road isn't hers, she may need help getting that parcel back.

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.