---

name: calibrate description: Run an evidence-seeking calibration roundtable to realign the plan with the North Star. Use when pausing between phases, when agents disagree, when reviewing work, when the user mentions "calibrate" or "realign", or when making decisions that affect the plan.

Calibrate — Orchestrator

Hard stop. Evidence-based calibration. Realign to North Star.

Pattern: This skill uses the orchestrator-subagent pattern. Each phase runs in a fresh context for optimal performance. See docs/guides/ORCHESTRATOR_SUBAGENT_PATTERN.md.

When This Applies

Signal	Action
Phase completion	Run scheduled calibration
User says "calibrate" or "realign"	Run full protocol
Agents disagree on approach	Run challenge/synthesis
Drift detected	Ad-hoc calibration
User says "/calibrate"	Run full protocol

---

Tool Reference

File Operations

Tool	Purpose
Read(north_star_path)	Read North Star Card
Read(requirements_path)	Read REQ-/AC- specs
Write(file_path, content)	Write phase reports

Beads/BV

Command	Purpose
bd list --json	Get all beads with status
bd view <id>	View specific bead
bv --robot-summary	Dependency overview
bv --robot-alerts	Check for issues

Testing

Command	Purpose
pytest	Run test suite
pytest --cov	Coverage check
ubs --staged	Security scan

Historical Context

Command	Purpose
cass search "calibration" --robot --limit 5	Find past calibration decisions
cass search "drift" --robot --days 30	Find recent drift incidents
cm context "calibration for <phase>" --json	Get learned patterns

Evidence Types

Type	Example
Code	src/auth/validator.ts:42
Test	npm test auth → PASS
Doc	URL + excerpt
Measurement	"Response: 150ms"
Discriminating test	Fails A, passes B

---

Architecture

┌─────────────────────────────────────────────────────────────────┐
│                    CALIBRATE ORCHESTRATOR                        │
│  - Creates session: sessions/calibrate-{timestamp}/              │
│  - Manages TodoWrite state                                       │
│  - Spawns subagents with minimal context                         │
│  - Passes report_path + summary between phases                   │
└─────────────────────────────────────────────────────────────────┘
                              │
         ┌────────────────────┼────────────────────┐
         │                    │                    │
         ▼                    ▼                    ▼
┌─────────────────┐  ┌─────────────────┐  ┌─────────────────┐
│  Coverage Agent │  │   Drift Agent   │  │ Challenge Agent │
│  agents/coverage│  │  agents/drift   │  │ agents/challenge│
│  Fresh context  │  │  Fresh context  │  │  Fresh context  │
└────────┬────────┘  └────────┬────────┘  └────────┬────────┘
         │                    │                    │
         ▼                    ▼                    ▼
    01_coverage.md      02_drift.md        03_challenge.md
         │                    │                    │
         └────────────────────┼────────────────────┘
                              │
         ┌────────────────────┼────────────────────┐
         ▼                    ▼                    ▼
┌─────────────────┐  ┌─────────────────┐
│ Synthesize Agent│  │  Report Agent   │ → Final output to user
│agents/synthesize│  │  agents/report  │
│  Fresh context  │  │  Fresh context  │
└────────┬────────┘  └────────┬────────┘
         │                    │
    04_synthesis.md     05_user_report.md

Subagents

Phase	Agent	Input	Output
1	agents/coverage.md	requirements, beads	coverage gaps
2	agents/drift.md	North Star, coverage report	drift items
3	agents/challenge.md	coverage + drift reports	test results
4	agents/synthesize.md	all reports	decisions + dissent
5	agents/report.md	synthesis	user-facing report

---

Philosophy

Tests adjudicate, not rhetoric. Pursue verifiable truth, not persuasive agreement.

Key insight (DebateCoder, 2025): "Tests are the medium of disagreement, not rhetoric." Rhetorical debate degrades outcomes—voting alone beats extended debate (research/003-debate-or-vote.md).

Principle	Meaning
Tests over rhetoric	Disagreements resolved by test results, not persuasion
Write discriminating tests	Tests that PASS for one approach, FAIL for another
No compromise	Evidence decides winner; don't average opinions
Preserve dissent	If tests don't discriminate, present both positions to user
User decides when value-dependent	If the "right" answer depends on user preferences, stop and ask

---

Execution Flow

1. Setup (Orchestrator)

1. Create session directory:
   mkdir -p sessions/calibrate-{timestamp}

2. Initialize TodoWrite with phases:
   - [ ] Phase 1: Coverage Analysis
   - [ ] Phase 2: Drift Detection
   - [ ] Phase 3: Test-Based Challenge
   - [ ] Phase 4: Synthesis
   - [ ] Phase 5: User Report

3. Gather inputs:
   - phase_name: The phase being calibrated
   - north_star_path: Path to North Star Card
   - requirements_path: Path to REQ-*/AC-* file
   - beads_status: bd list --json

2. Phase 1: Coverage Analysis

Spawn: agents/coverage.md

Input:

{
  "phase_name": "<phase>",
  "session_dir": "sessions/calibrate-{timestamp}",
  "requirements_path": "PLAN/01_requirements.md",
  "beads_status": "<bd list --json output>"
}

Expected output:

{
  "report_path": "sessions/.../01_coverage_report.md",
  "p0_coverage": "4/5 (80%)",
  "gaps_summary": "1 P0 missing bead, 1 P0 missing tests"
}

3. Phase 2: Drift Detection

Spawn: agents/drift.md

Input:

{
  "phase_name": "<phase>",
  "session_dir": "sessions/calibrate-{timestamp}",
  "north_star_path": "PLAN/00_north_star.md",
  "coverage_report_path": "<from Phase 1>"
}

Expected output:

{
  "report_path": "sessions/.../02_drift_report.md",
  "alignment_summary": "5/7 ALIGNED, 1 DRIFTING, 1 OFF-TRACK",
  "drift_items": ["NS-1: Auth method", "NS-3: Mobile support"]
}

4. Phase 3: Test-Based Challenge

Spawn: agents/challenge.md

Input:

{
  "session_dir": "sessions/calibrate-{timestamp}",
  "coverage_report_path": "<from Phase 1>",
  "drift_report_path": "<from Phase 2>"
}

Expected output:

{
  "report_path": "sessions/.../03_challenge_report.md",
  "verified_claims": ["NS-1 drift", "NS-3 mobile gap"],
  "unresolved": ["API rate limit assumption"]
}

5. Phase 4: Synthesis

Spawn: agents/synthesize.md

Input:

{
  "session_dir": "sessions/calibrate-{timestamp}",
  "coverage_report_path": "<from Phase 1>",
  "drift_report_path": "<from Phase 2>",
  "challenge_report_path": "<from Phase 3>"
}

Expected output:

{
  "report_path": "sessions/.../04_synthesis_report.md",
  "decisions": [{"action": "Implement SSO", "priority": "P0"}],
  "user_questions": ["Load test timing?"],
  "preserved_dissent": ["API rate limit adequacy"]
}

6. Phase 5: User Report

Spawn: agents/report.md

Input:

{
  "session_dir": "sessions/calibrate-{timestamp}",
  "synthesis_report_path": "<from Phase 4>",
  "north_star_path": "PLAN/00_north_star.md"
}

Expected output:

{
  "report_path": "sessions/.../05_user_report.md",
  "summary": {"alignment": "5/7", "blocking": 2},
  "user_questions": ["Load test timing?", "bd-130 scope creep?"]
}

7. Finalize (Orchestrator)

1. Update TodoWrite (all phases complete)
2. Read 05_user_report.md
3. Present to user
4. Log changes to .beads/change-log.md if decisions made

---

Context Optimization

Why subagents beat monolithic calibration:

Monolithic	Subagent Pattern
All context in one window	Each phase gets fresh 200k
"Lost in middle" risk	No degradation
One failure corrupts all	Phases are isolated
~3000 token prompt	~500 tokens per phase

Research backing:

• research/056-multi-agent-orchestrator.md: +90.2% over single-agent
• research/004-context-length-hurts.md: Context degradation is real

---

Evidence Standard (All Subagents)

For any non-trivial claim, include at least one:

Evidence Type	Example
Code evidence	src/auth/validator.ts:42
Test evidence	npm test auth → PASS
Doc evidence	URL + relevant excerpt
Measurement	"Response time: 150ms"
Discriminating test	Test that fails one option, passes another

---

Status Labels

Category	Values
Beads	SOUND / FLAWED / UNCERTAIN
Alignment	ALIGNED / DRIFTING / OFF-TRACK
Assumptions	VERIFIED / UNVERIFIED / RISKY
Challenges	ACCEPTED / REJECTED

---

Anti-Patterns

Don't	Why
Compromise for harmony	Truth > harmony
Soften criticism	Clarity > comfort
Skip pre-work	Unprepared = unproductive
Force agreement	Preserve dissent
Argue by rhetoric	Evidence only
Pass full content between phases	Pass paths + summaries

---

Templates

Located in .claude/templates/calibration/:

• user-report.md — Final output to user
• broadcast.md — Agent analysis broadcast
• response.md — Challenge responses
• decision.md — Falsifiable decisions
• summary.md — Agent-to-agent summary
• change-log-entry.md — Plan change records

---

See Also

• agents/ — Subagent definitions
• docs/guides/ORCHESTRATOR_SUBAGENT_PATTERN.md — Pattern documentation
• docs/workflow/IDEATION_TO_PRODUCTION.md — Complete pipeline
• docs/workflow/PROTOCOLS.md — Protocol cards