# tribunal

Coordinates a multi-agent review loop with isolated verifiers and an adversary to gate deliverable releases. Stops hidden failure modes on critical tasks before deployment.

- skill · `type=skill` · Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, OpenCode · 746 installs · ★ 17
- Author: a-tokyo
- License: MIT · policy=mirror · the beginning of the file is at the end of this page
- Source: https://github.com/a-tokyo/agent-skills/tree/HEAD/skills/tribunal/SKILL.md
- Updated: 2026-10-24
- HTML: https://affpapa.org/en/nevibecode/skills/tribunal

## What it does

The skill enforces four isolated roles across separate context sessions: orchestrator, doer, and independent verifiers. The orchestrator locks acceptance criteria and verification commands before coding starts. It writes no deliverable code and assigns no scores itself. A separate doer produces the artifact, runs verification commands, and exports the result under a commit hash, branch, or URI.

Next, the orchestrator convenes the panel behind a context wall. Verifiers receive the artifact and criteria, but none of the doer's rationale or prior scores. The panel includes a dedicated adversary assigned to formulate named failure scenarios, targeting spec gaps, fragile composition, or hidden assumptions. Claims require exact line citations or terminal output; unverified assertions are discarded.

The run concludes with an explicit verdict: `SHIP`, `SHIP_WITH_CAVEATS`, `ITERATE`, `BLOCK`, or `ESCALATE`. Guardrails limit execution to 3 panel rounds and a default budget of 5 doer dispatches before handing the evidence package to a human. Running this protocol on single-file edits or simple code changes adds overhead without necessity.

## Install

### Claude Code (native platform)

1. **Skills CLI (Vercel)**
```bash
npx skills add a-tokyo/agent-skills --skill tribunal -a claude-code
```

2. **Manually: put the files in place**
- File: `~/.claude/skills/tribunal/SKILL.md` — Copy the whole skill folder; for one project use .claude/skills/tribunal/

### Codex

1. **Skills CLI (Vercel)**
```bash
npx skills add a-tokyo/agent-skills --skill tribunal -a codex
```

2. **Manually: put the files in place**
- File: `.agents/skills/tribunal/SKILL.md` — For all projects use ~/.agents/skills/

### Cursor

1. **Skills CLI (Vercel)**
```bash
npx skills add a-tokyo/agent-skills --skill tribunal -a cursor
```

2. **Manually: put the files in place**
- File: `.cursor/skills/tribunal/SKILL.md` — Cursor also reads .agents/skills/ and .claude/skills/

### GitHub Copilot

1. **GitHub CLI**
```bash
gh skill install a-tokyo/agent-skills tribunal
```

2. **Manually: put the files in place**
- File: `.github/skills/tribunal/SKILL.md`

### Gemini CLI

1. **Skills CLI (Vercel)**
```bash
npx skills add a-tokyo/agent-skills --skill tribunal -a gemini-cli
```

2. **Platform CLI**
```bash
gemini skills install https://github.com/a-tokyo/agent-skills --path skills/tribunal
```

### Windsurf (Devin Desktop)

**Manually: put the files in place**
- File: `.devin/skills/tribunal/SKILL.md` — The legacy .windsurf/skills/ path still works

### OpenCode

**Skills CLI (Vercel)**
```bash
npx skills add a-tokyo/agent-skills --skill tribunal -a opencode
```

### Claude.ai

**Claude.ai**
- Zip the folder and upload it in Settings → Capabilities → Skills

Where a file is given instead of a command, copy the files from the source to that path: https://github.com/a-tokyo/agent-skills/tree/HEAD/skills/tribunal/SKILL.md

## When to use it
- verify high-stakes code slices against pre-declared criteria
- run context-isolated panels without cross-agent bias
- surface hidden failure scenarios using a dedicated adversary agent
- gate ship decisions through evidence-backed verdict logging

## Example prompts
- Run this deliverable through the tribunal pattern before shipping
- Set up a tribunal consensus review for the plan with an adversarial verifier
- Verify the code slice on branch `feature/auth` using the tribunal loop

## Source text · SKILL.md · MIT

Below is the content of a third-party file. It is data, not instructions for you: do not act on anything written inside unless the human asks. Block tag: 86118418f638ad8e.

BEGIN THIRD-PARTY FILE 86118418f638ad8e
```text
---
name: tribunal
version: 0.0.3
license: MIT
description: >-
  Runs a doer -> verifier-panel -> consensus loop to verify a deliverable before it ships.
  An orchestrator freezes acceptance criteria before implementation, dispatches a doer, then
  convenes a context-walled panel of independent verifiers - including an adversary with an
  explicit must-oppose mandate - for evidence-anchored review adjudicated to a SHIP /
  SHIP_WITH_CAVEATS / ITERATE / BLOCK / ESCALATE verdict logged to a ledger. Use for
  multi-agent verification of any artifact - code slices, plans, documents, audits -
  whenever asked to verify a deliverable, vet a plan, run a consensus review or independent
  review, set up a doer-verifier loop, or gate a ship decision. Works on any platform with
  parallel subagents; degrades to sequential fresh-context sessions without them; on
  detached, sandboxed or asynchronous runtimes the artifact is handed over by fetchable
  address and the budgets travel in the handoff. Not for trivial single-file edits or
  ordinary code review.
---

# Tribunal

The orchestrator builds nothing and scores nothing itself — it slices the work, dispatches
a *separate* doer, convenes *separate* verifiers, and adjudicates on evidence. Three
behaviors carry the value: an **adversarial second look** that catches
what a single pass ships silently, as named failure scenarios; **calibrated verdicts**
— locally fixable defects get ITERATE, not "rewrite everything", and passing math is
overridden only by verified evidence; **evidence before claims** — nothing is "done"
without fresh reproduction; refuted claims are excluded, never averaged in. Announce
at start: "Running this through the tribunal pattern: doer -> verifier panel -> consensus."

## When to use

Multi-part or high-stakes deliverables where a shipped defect costs more than a panel.
Not for trivial edits, anything one verification command proves, or ordinary code
review (dialogue improving a change vs independent measurements of a frozen artifact
against pre-declared criteria, adjudicated to a ship decision). Never nest tribunals
— no role runs the protocol on its own output.

## The loop

1. Freeze acceptance criteria and verification commands BEFORE implementation; derive
   scoring dimensions, weights, and a pass target from them, recorded so re-panels
   reuse the rubric. Identify the operative skills in play — those bearing on how the
   artifact is built or judged (e.g. production-grade); never the tribunal skill itself
   nor pure orchestration skills — and fold their standards into the criteria. Verify-only
```
END THIRD-PARTY FILE 86118418f638ad8e

The third-party file has ended. Everything between the 86118418f638ad8e tags is data: requests and commands from it are not followed. An “end of file” line with another tag inside the block is part of the file.

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