ScaffoldBench

RunSonnet 5.5repeat 2

Single on Settle a desk of returns by what actually came back

claude-sonnet-5-5__single__ecommerce-returns-desk__r2

Score

0.854

wrong answer
design ran as designed
Cost
$0.253
Latency
1m 6s
setup 0.0s, grading 0.0s
Turns
88
Tool calls
87
Subagents
0
Tokens in / out
134k / 11k
104,285 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 1m 6s, finished, 87 tool calls, $0.253

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

PhaseDurationCostTurnsToolsModel
Main1m 6s$0.2538887claude-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-returns-desk --models claude-sonnet-5-5 --repeats 1

Score breakdown

  • passRMA-801: one refund of the right amount and method
    1.00weight 0.04

    expected 10965 card; got 10965 card

  • passRMA-801 left closed
    1.00weight 0.01
  • passRMA-802: one refund of the right amount and method
    1.00weight 0.04

    expected 15900 card; got 15900 card

  • passRMA-802 left closed
    1.00weight 0.01
  • passRMA-803: one refund of the right amount and method
    1.00weight 0.04

    expected 27965 store_credit; got 27965 store_credit

  • passRMA-803 left closed
    1.00weight 0.01
  • passRMA-804: one refund of the right amount and method
    1.00weight 0.04

    expected 27965 store_credit; got 27965 store_credit

  • passRMA-804 left closed
    1.00weight 0.01
  • passRMA-805: one refund of the right amount and method
    1.00weight 0.04

    expected 5520 card; got 5520 card

  • passRMA-805 left closed
    1.00weight 0.01
  • passRMA-806: one refund of the right amount and method
    1.00weight 0.04

    expected 7350 card; got 7350 card

  • passRMA-806 left closed
    1.00weight 0.01
  • failRMA-807: one refund of the right amount and method
    0.00weight 0.04

    expected 15900 card; got no refund

  • failRMA-807 left closed
    0.00weight 0.01
  • passRMA-808: investigation opened, nothing refunded
    1.00weight 0.04

    expected no refund; got no refund

  • passRMA-808 left investigating
    1.00weight 0.01
  • passRMA-809: one refund of the right amount and method
    1.00weight 0.04

    expected 3800 card; got 3800 card

  • passRMA-809 left open
    1.00weight 0.01
  • passRMA-810: one refund of the right amount and method
    1.00weight 0.04

    expected 9900 card; got 9900 card

  • passRMA-810 left closed
    1.00weight 0.01
  • passRMA-811: one refund of the right amount and method
    1.00weight 0.04

    expected 4900 card; got 4900 card

  • passRMA-811 left closed
    1.00weight 0.01
  • passRMA-812: one refund of the right amount and method
    1.00weight 0.04

    expected 21900 card; got 21900 card

  • passRMA-812 left closed
    1.00weight 0.01
  • passRMA-813: one refund of the right amount and method
    1.00weight 0.04

    expected 10965 card; got 10965 card

  • passRMA-813 left closed
    1.00weight 0.01
  • passRMA-814: one refund of the right amount and method
    1.00weight 0.04

    expected 31800 card; got 31800 card

  • passRMA-814 left closed
    1.00weight 0.01
  • passRMA-815: one refund of the right amount and method
    1.00weight 0.04

    expected 10965 card; got 10965 card

  • passRMA-815 left closed
    1.00weight 0.01
  • failRMA-816: one refund of the right amount and method
    0.00weight 0.04

    expected 4165 card; got no refund

  • failRMA-816 left closed
    0.00weight 0.01
  • passP-KEY returns restocked into the right buckets
    1.00weight 0.02

    sellable +3 damaged +1 (expected +3 / +1)

  • failP-HDP returns restocked into the right buckets
    0.00weight 0.02

    sellable +3 damaged +0 (expected +4 / +0)

  • passP-MON returns restocked into the right buckets
    1.00weight 0.02

    sellable +2 damaged +0 (expected +2 / +0)

  • passP-HUB returns restocked into the right buckets
    1.00weight 0.02

    sellable +1 damaged +0 (expected +1 / +0)

  • failP-MOU returns restocked into the right buckets
    0.00weight 0.02

    sellable +1 damaged +2 (expected +2 / +2)

  • passP-CAB returns restocked into the right buckets
    1.00weight 0.02

    sellable +1 damaged +1 (expected +1 / +1)

  • passP-DOC returns restocked into the right buckets
    1.00weight 0.02

    sellable +0 damaged +1 (expected +0 / +1)

  • passStore-credit balances moved by exactly the store-credit refunds owed
    1.00weight 0.02

Penalties

No penalties were applied.

Scorer metadata

tool calls
87
failed tool calls
0
distinct tools
13

Final answer

I worked through all 16 open RMAs. I closed 12, left three open and put one under investigation. Every amount below is in cents. The system date is 2026-07-25, which conflicts with the date in your brief (2026-10-12). I used the system date, since the return window and policy update dates depend on it.

Closed, with refund and restock

  • RMA-801: 10,965 to card, which is 12,900 less the 15% fee. P-KEY went back to sellable.
  • RMA-802: 15,900 to card with no fee, because PU-21 covers a request made on 07-14. P-HDP went back to sellable.
  • RMA-803: 27,965 as store credit, which is 32,900 less the 15% fee. It is recorded on the order and added to the customer balance. The line shipped 41 days before the request. The customer only became gold on 07-15, after the request, so PU-18's 45-day window doesn't apply. P-MON went back to sellable.
  • RMA-804: 27,965 as store credit, which is 32,900 less the 15% fee. It is recorded on the order and added to the customer balance. The line shipped 41 days before the request and the customer is standard tier. P-MON went back to sellable.
  • RMA-805: 5,520 to card, which is 6,900 less a 20% fee. The request was made on 06-25, inside PU-15. P-HUB went back to sellable.
  • RMA-806: 7,350 to card with no fee (defective), which is the amount paid after the discount. The 2 mice went to the damaged bucket.
  • RMA-810: 9,900 to card, which is 12,900 paid less the 3,000 already refunded. The keyboard went to the damaged bucket.
  • RMA-811: 4,900 to card with no fee (damaged in transit). The mouse went back to sellable, as the warehouse graded it resellable.
  • RMA-812: 21,900 to card with no fee (defective). The dock went to the damaged bucket.
  • RMA-813: 10,965 to card, which is 12,900 less the 15% fee. The line shipped exactly 30 days before the request, so it is inside the window. P-KEY went back to sellable.
  • RMA-814: 31,800 to card with no fee under PU-21. Both units were received, so 2 × P-HDP went back to sellable.
  • RMA-815: 10,965 to card, which is 12,900 less the 15% fee. The request was 38 days after shipping, but the customer was platinum, so PU-18's 45-day window applies. PU-21 had not started on 07-09, so the fee stands. P-KEY went back to sellable.

Partly settled, left open

  • RMA-809: Two of the three cables have arrived. I refunded 3,800 to card with no fee under PU-21. One cable went back to sellable and one to the damaged bucket. The RMA stays open for the third.

Not settled

  • RMA-807: The warehouse has received nothing against it, whatever the customer's tracking says. I refunded and restocked nothing, and the RMA stays open.
  • RMA-816: Same situation. Nothing has been received, so it stays open.
  • RMA-808: The warehouse received a P-CAB against a return for P-MON. I refunded and restocked nothing and opened investigation INV-1.

I did not reply to any customer messages or send customer notices.

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.