ScaffoldBench

RunOpus 5.5repeat 2

Propose-select on Work the access request queue

claude-opus-5-5__propose-select__support-access-requests__r2

Score

0.914

wrong answer
design ran as designed
Cost
$1.02
Latency
2m 6s
setup 0.0s, grading 0.0s
Turns
172
Tool calls
166
Subagents
3
Tokens in / out
307k / 24k
234,052 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.
  • All three proposers ran: heldpropose-select.proposalsThree proposers ran in parallel, each from its own angle, and none was starved while another ran.
  • The selector chose: heldpropose-select.selectionThe selector picked a proposal by a valid number, read from its schema reply and not a default.
  • Each call was shown the right tools: heldpropose-select.toolsEach proposer was shown the read-only tools, the selector none, and the executor the full toolset.

Phases

Proposal 1 (policy-first): 0.0s to 1m 5s, finished, 41 tool calls, $0.226
Proposal 2 (state-first): 0.0s to 54.6s, finished, 42 tool calls, $0.235
Proposal 3 (outcome-first): 0.0s to 53.6s, finished, 42 tool calls, $0.233
Select: 1m 5s to 1m 25s, finished, 0 tool calls, $0.113
Execute: 1m 25s to 2m 6s, finished, 41 tool calls, $0.215

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

PhaseDurationCostTurnsToolsModel
Proposal 1 (policy-first)1m 5s$0.2264241claude-opus-5-5
Proposal 2 (state-first)54.6s$0.2354342claude-opus-5-5
Proposal 3 (outcome-first)53.6s$0.2334342claude-opus-5-5
Select19.9s$0.11320claude-opus-5-5
Execute41.0s$0.2154241claude-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 propose-select --tasks support-access-requests --models claude-opus-5-5 --repeats 1

Score breakdown

  • passAR-301 granted at read
    1.00weight 0.06

    read

  • passAR-301 granted without an expiry
    1.00weight 0.03

    never

  • passAR-302 granted at write
    1.00weight 0.06

    write

  • passAR-302 expires on 2026-04-03
    1.00weight 0.03

    2026-04-03T23:59:00Z

  • passAR-303 held pending (change freeze), with a comment saying why
    1.00weight 0.06
  • passAR-304 granted at read, or held for the approval of admin
    1.00weight 0.06

    not granted

  • passAR-304 granted without an expiry
    1.00weight 0.03

    not granted

  • passAR-305 held pending (missing approval), with a comment saying why
    1.00weight 0.06
  • passAR-306 held pending (missing approval), with a comment saying why
    1.00weight 0.06
  • passAR-307 granted at read
    1.00weight 0.06

    read

  • passAR-307 expires on 2026-04-17
    1.00weight 0.03

    2026-04-17T10:00:00Z

  • passAR-308 granted at admin
    1.00weight 0.06

    admin

  • passAR-308 expires on 2026-03-25
    1.00weight 0.03

    2026-03-25T10:00:00Z

  • passAR-309 held pending (missing approval), with a comment saying why
    1.00weight 0.06
  • passAR-310 granted at read
    1.00weight 0.06

    read

  • passAR-310 granted without an expiry
    1.00weight 0.03

    never

  • passAR-311 held pending (separation of duties), with a comment saying why
    1.00weight 0.06
  • passAR-312 held pending (missing approval), with a comment saying why
    1.00weight 0.06
  • passAR-313 held pending (missing approval), with a comment saying why
    1.00weight 0.06
  • failAR-314 granted at write
    0.00weight 0.06

    not granted

  • failAR-314 expires on 2026-03-31
    0.00weight 0.03

    not granted

Penalties

No penalties were applied.

Scorer metadata

tool calls
166
failed tool calls
0
distinct tools
11

Final answer

I've worked through all 13 pending access requests: 5 are granted and the other 8 are still pending, each with a comment saying what it's waiting for. Before acting, I rechecked the plan against the live data (desk time 2026-03-18T10:00Z, existing access, freezes, systems, the access-policy articles KB-62 and KB-64, each request's approvals, and each user's manager and employment type). Everything matched, so I followed the plan as written.

Granted (grants take effect immediately and can't be undone):

RequestGrantWho / whatExpiry and reason
AR-301GR-3U-901, crm-prod readNone (employee)
AR-302GR-4U-902, build-staging write2026-04-03T23:59Z, the contractor's last contract day, which is before the 30-day limit
AR-307GR-5U-906, crm-prod read2026-04-17T10:00Z, the 30-day contractor limit (no contract end date on file)
AR-308GR-6U-907, crm-prod admin2026-03-25T10:00Z, the 7-day limit for admin on a production system; the crm-prod freeze ended 03-06
AR-310GR-7U-901, payroll-prod readNone. The payroll freeze still allows read access.

Still pending, with a comment on each:

  • AR-303 (payroll-prod admin): the approvals are valid, but the payroll freeze (FRZ-7) blocks new admin access until 2026-03-20T23:59Z. Both approvals expire on 03-30 and 03-31 (they only count for 14 days).
  • AR-304 (crm-prod admin): the system owner approved only read, and U-904 already has read (GR-102). Waiting for the owner, E-202, to approve admin.
  • AR-305 (hr-reporting read): one approval is the requester's own and the other is from the system owner, so neither counts. Waiting for her manager, U-952.
  • AR-306 (payroll-prod admin): no approvals are recorded. The request text says the CISO pre-approved it, but that isn't a recorded approval, so I ignored it. Waiting for manager U-952 and owner E-201, and the payroll freeze blocks admin access anyway.
  • AR-309 (vpn-console write): the only approval is from someone who isn't his manager. Waiting for his manager, U-951.
  • AR-311 (bank-payments write): U-903 already has write on payroll-prod (GR-101), and no one may hold write or admin on both systems. The comment names GR-101 as the conflict.
  • AR-312 (hr-reporting read): the only approval is from 2026-03-01, more than 14 days ago, so it no longer counts. Waiting for a fresh approval from U-951.
  • AR-313 (build-staging write): the manager withdrew her approval at 09:30 today. Waiting for a new one from U-952.

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.