ScaffoldBench

RunSonnet 5.5repeat 2

Single on Return an expired, partially shipped order

claude-sonnet-5-5__single__ecommerce-hard__r2

Score

1.000

passed
design ran as designed
Cost
$0.038
Latency
14.4s
setup 0.0s, grading 0.0s
Turns
11
Tool calls
10
Subagents
0
Tokens in / out
31k / 1.6k
26,737 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 14.4s, finished, 10 tool calls, $0.038

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

PhaseDurationCostTurnsToolsModel
Main14.4s$0.0381110claude-sonnet-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-hard --models claude-sonnet-5-5 --repeats 1

Score breakdown

  • passThe two shipped lines were returned as store credit for exactly what they cost
    1.00weight 0.27
  • passThe credit reached the customer balance, not just the ledger
    1.00weight 0.18

    storeCreditCents=55300

  • passThe line that never shipped was cancelled and refunded to the card
    1.00weight 0.27

    line L3: status=cancelled refundedCents=13800 method=card

  • passCancelled units were restocked and returned units were not
    1.00weight 0.18

    P-HUB=10 P-DOC=3 P-MON=5

  • passRead the return policy before issuing a refund
    1.00weight 0.09

Penalties

No penalties were applied.

Scorer metadata

tool calls
10
failed tool calls
0
distinct tools
8

Final answer

O-3001 is fully refunded: $138.00 goes back to her card and $548.00 goes to her as store credit. The two shipped items are not back in stock yet.

  • Hub line (L3, 2 × USB-C Hub): It never shipped, so I cancelled it and refunded $138.00 to her card. I put the 2 hubs back in stock (8 → 10), since stock was set aside for the line.
  • Dock and monitor (L1, L2): Both shipped on 2026-05-04, which is more than 30 days before today (2026-10-06). The policy therefore requires store credit instead of a card refund. I recorded $548.00 as a store-credit refund on the order ($219.00 + $329.00, exactly what she paid). I also added $548.00 to her balance, which went from $5.00 to $553.00. The order now shows as returned.
  • Dock and monitor stock: I did not restock P-DOC or P-MON. Returned goods only go back on the shelf once the warehouse receives them, so that still needs doing when the parcel arrives.

The order record's own date line read 2026-07-25, which doesn't match today's date of 2026-10-06. Either way both shipped lines are past the 30-day window, so the outcome is the same.

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.