ScaffoldBench

RunOpus 5.5repeat 1

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

claude-opus-5-5__single__ecommerce-returns-desk__r1

Score

0.854

wrong answer
design ran as designed
Cost
$0.468
Latency
1m 41s
setup 0.0s, grading 0.0s
Turns
89
Tool calls
88
Subagents
0
Tokens in / out
200k / 12k
175,643 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 41s, finished, 88 tool calls, $0.468

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

PhaseDurationCostTurnsToolsModel
Main1m 41s$0.4688988claude-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-returns-desk --models claude-opus-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
88
failed tool calls
0
distinct tools
13

Final answer

I worked through all 16 open RMAs. 12 are refunded, restocked and closed, one is under investigation, and three stay open because goods are still on their way. I used the store system's date (2026-07-25), not the 2026-10-05 in my environment, because the return windows and policy updates are measured against the system's date.

Closed (refunded and restocked as the warehouse graded them):

RMARefundWhyRestock
801$109.65 cardChanged mind, 15% fee1 P-KEY sellable
802$159.00 cardChanged mind, no fee: requested inside the summer no-fee period (PU-21, 07-10 to 07-20)1 P-HDP sellable
803$279.65 store creditRequested 41 days after shipping. The customer only became gold on 07-15, after asking, so the longer gold/platinum window (PU-18) doesn't apply and the 30-day limit does. 15% fee.1 P-MON sellable
804$279.65 store credit41 days, standard-tier customer, so outside the window. 15% fee.1 P-MON sellable
805$55.20 cardRequested 06-25, inside the peak-season period (PU-15), so a 20% fee1 P-HUB sellable
806$73.50 cardDefective, no fee. Refunded the discounted amount actually paid for 2 units.2 P-MOU damaged
810$99.00 cardDefective: $129.00 paid less $30.00 already refunded on that line1 P-KEY damaged
811$49.00 cardDamaged in transit, no fee1 P-MOU sellable
812$219.00 cardDefective, 28 days, no fee1 P-DOC damaged
813$109.65 cardRequested exactly 30 days after shipping, which is still inside the window. 15% fee.1 P-KEY sellable
814$318.00 cardBoth units arrived in separate parcels. No fee (PU-21).2 P-HDP sellable
815$109.65 card38 days, but the customer has been platinum since February, so the 45-day window applies. 15% fee.1 P-KEY sellable

For RMA-803 and RMA-804, the refund is recorded on each order and the same $279.65 is added to the customer's store-credit balance.

Still open:

  • RMA-808 (under investigation): the return covers a monitor, but the warehouse received a cable. I refunded and restocked nothing.
  • RMA-809 (open): 2 of the 3 cables have arrived. I refunded $38.00 to card with no fee (PU-21 waives it whenever the goods come back) and put 1 cable in sellable stock and 1 in damaged. The third unit hasn't arrived yet.
  • RMA-807 and RMA-816 (open): the warehouse has received nothing. The RMA-807 customer says tracking shows delivery, but the rules only allow settling units the warehouse has actually received, so I refunded nothing.

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.