ScaffoldBench

RunHaiku 4.5repeat 2

Gated-execute on Run the major-incident runbook for a CI outage

claude-haiku-4-5-20251001__gated-execute__support-major-incident__r2

Score

0.620

wrong answer
design ran as designed
Cost
$0.520
Latency
7m 46s
setup 0.0s, grading 0.0s
Turns
123
Tool calls
86
Subagents
16
Tokens in / out
452k / 45k
307,776 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.
  • Every state change was reviewed: heldgated-execute.reviewedEvery call that changed the world had been allowed by a review before it ran, counted from the world’s own journal.
  • Every decision was read: heldgated-execute.decisionsEvery review that ran to its end gave its decision through the schema; an unreadable one is a denial.
  • Each call was shown the right tools: heldgated-execute.toolsThe executor was shown the task’s full toolset and each reviewer the read-only tools.

Phases

Execute: 0.0s to 7m 46s, finished, 25 tool calls, $0.079
Review 1: create_incident: 9.4s to 31.6s, finished, 4 tool calls, $0.025
Review 2: page_engineer: 36.9s to 57.7s, finished, 6 tool calls, $0.024
Review 3: assign_incident_role: 57.8s to 1m 15s, finished, 4 tool calls, $0.020
Review 4: link_to_incident: 1m 29s to 2m 4s, finished, 8 tool calls, $0.037
Review 5: set_severity: 2m 4s to 2m 18s, finished, 3 tool calls, $0.019
Review 6: set_severity: 2m 18s to 2m 55s, finished, 3 tool calls, $0.033
Review 7: set_severity: 2m 55s to 4m 8s, finished, 5 tool calls, $0.062
Review 8: set_severity: 4m 8s to 4m 36s, finished, 3 tool calls, $0.027
Review 9: set_severity: 4m 36s to 4m 47s, finished, 2 tool calls, $0.019
Review 10: set_severity: 4m 47s to 4m 57s, finished, 2 tool calls, $0.017
Review 11: set_severity: 5m 12s to 5m 24s, finished, 2 tool calls, $0.018
Review 12: set_severity: 5m 24s to 5m 41s, finished, 2 tool calls, $0.023
Review 13: assign_incident_role: 5m 45s to 6m 6s, finished, 8 tool calls, $0.029
Review 14: assign_incident_role: 6m 8s to 6m 28s, finished, 4 tool calls, $0.023
Review 15: post_status_update: 6m 31s to 6m 48s, finished, 3 tool calls, $0.024
Review 16: create_ticket: 6m 55s to 7m 31s, finished, 5 tool calls, $0.040

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

PhaseDurationCostTurnsToolsModel
Execute7m 46s$0.0792625claude-haiku-4-5-20251001
Review 1: create_incident22.2s$0.02564claude-haiku-4-5-20251001
Review 2: page_engineer20.8s$0.02486claude-haiku-4-5-20251001
Review 3: assign_incident_role16.9s$0.02064claude-haiku-4-5-20251001
Review 4: link_to_incident35.7s$0.037108claude-haiku-4-5-20251001
Review 5: set_severity13.8s$0.01953claude-haiku-4-5-20251001
Review 6: set_severity36.5s$0.03353claude-haiku-4-5-20251001
Review 7: set_severity1m 13s$0.06275claude-haiku-4-5-20251001
Review 8: set_severity27.7s$0.02763claude-haiku-4-5-20251001
Review 9: set_severity11.4s$0.01942claude-haiku-4-5-20251001
Review 10: set_severity10.3s$0.01742claude-haiku-4-5-20251001
Review 11: set_severity11.8s$0.01842claude-haiku-4-5-20251001
Review 12: set_severity16.8s$0.02342claude-haiku-4-5-20251001
Review 13: assign_incident_role20.7s$0.029108claude-haiku-4-5-20251001
Review 14: assign_incident_role19.3s$0.02364claude-haiku-4-5-20251001
Review 15: post_status_update16.8s$0.02453claude-haiku-4-5-20251001
Review 16: create_ticket36.2s$0.04075claude-haiku-4-5-20251001

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 gated-execute --tasks support-major-incident --models claude-haiku-4-5-20251001 --repeats 1

Score breakdown

  • passAn incident is open for the build pipeline
    1.00weight 0.04
  • passThe incident-command engineer on call now commands the incident
    1.00weight 0.08

    commander=E-401 (expected E-401)

  • passThe commander was paged
    1.00weight 0.04
  • passT-3101 linked to the incident
    1.00weight 0.04
  • passT-3101 kept open, raised to sev1 with its deadline intact
    1.00weight 0.02

    status=open severity=sev1 due=2026-03-30T18:52:00Z (expected sev1, 2026-03-30T18:52:00Z)

  • passT-3102 linked to the incident
    1.00weight 0.04
  • passT-3102 kept open, raised to sev1 with its deadline intact
    1.00weight 0.02

    status=open severity=sev1 due=2026-03-30T18:58:00Z (expected sev1, 2026-03-30T18:58:00Z)

  • passT-3103 linked to the incident
    1.00weight 0.04
  • passT-3103 kept open, raised to sev1 with its deadline intact
    1.00weight 0.02

    status=open severity=sev1 due=2026-03-30T19:01:00Z (expected sev1, 2026-03-30T19:01:00Z)

  • passT-3104 linked to the incident
    1.00weight 0.04
  • failT-3104 kept open, raised to sev1 with its deadline intact
    0.00weight 0.02

    status=open severity=sev2 due=2026-03-31T15:05:00Z (expected sev1, 2026-03-31T15:05:00Z)

  • passT-3105 linked to the incident
    1.00weight 0.04
  • failT-3105 kept open, raised to sev1 with its deadline intact
    0.00weight 0.02

    status=open severity=sev4 due=2026-04-01T15:07:00Z (expected sev1, 2026-04-01T15:07:00Z)

  • passT-3106 linked to the incident
    1.00weight 0.04
  • failT-3106 kept open, raised to sev1 with its deadline intact
    0.00weight 0.02

    status=new severity=sev1 due=- (expected sev1, 2026-03-30T16:20:00Z)

  • failT-3109 linked to the incident
    0.00weight 0.04
  • failT-3109 kept open, raised to sev1 with its deadline intact
    0.00weight 0.02

    status=new severity=unset due=- (expected sev1, 2026-03-30T16:20:00Z)

  • failT-3112 linked to the incident
    0.00weight 0.04
  • failT-3112 kept open, raised to sev1 with its deadline intact
    0.00weight 0.02

    status=new severity=unset due=- (expected sev1, 2026-03-30T16:20:00Z)

  • failT-3113 linked to the incident
    0.00weight 0.04
  • failT-3113 kept open, raised to sev1 with its deadline intact
    0.00weight 0.02

    status=open severity=sev3 due=2026-03-31T15:13:00Z (expected sev1, 2026-03-31T15:13:00Z)

  • failT-3114 linked to the incident
    0.00weight 0.04
  • failT-3114 kept open, raised to sev1 with its deadline intact
    0.00weight 0.02

    status=open severity=sev3 due=2026-03-31T15:16:00Z (expected sev1, 2026-03-31T15:16:00Z)

  • passThe engineer covering comms right now is the communications lead
    1.00weight 0.08

    comms=E-803 (expected E-803)

  • passA status update in the runbook form, with the next update due within 30 minutes
    1.00weight 0.08
  • failA postmortem ticket for the service, linked to the incident, due at close of business five business days on
    0.00weight 0.08

    T-3115 due=2026-04-07T17:00:00Z

Penalties

No penalties were applied.

Scorer metadata

tool calls
86
failed tool calls
0
distinct tools
18

Final answer

Summary

I have successfully taken charge of the company-wide build-pipeline outage and established incident management by the book, following KB-40 (Major Incident Runbook). Here's what was completed:

Incident Created: INC-1 "CI completely down - no runners available"

Command Structure:

  • Incident Commander: E-401 (Priya Raman) - paged immediately and assigned
  • Communications Lead: E-803 (Elif Demir) - from comms-secondary backup rotation (primary was on leave)

Linked Outage Reports (6 tickets merged into incident):

  • T-3101: "All CI builds failing: no runners available" (company-wide, sev1)
  • T-3102: "Mobile builds stuck in the queue" (department, sev1)
  • T-3103: "Pipeline never starts" (team, sev1)
  • T-3104: "Builds hang at waiting for runner" (team, sev2)
  • T-3105: "Cannot trigger a build for my branch" (single-user, sev4)
  • T-3106: "CI completely down" (company-wide, sev1)

Status Communication:

  • Initial status update posted at 15:20 UTC
  • Next update due at 15:50 UTC (within 30-minute window)

Postmortem Scheduled:

  • T-3115 created, due 2026-04-07 at close of business (5 business days out)

The incident is now properly structured with clear command, communications, and tracking. The platform-primary rotation (build-pipeline's owning rotation) will work the resolution while the incident commander coordinates the response and the comms lead manages external updates.

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.