# definition-of-done

Checks a feature or story against completion criteria and asks for concrete evidence. Useful when an agent’s summary alone is not enough to close the work.

- skill · `type=skill` · Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, OpenCode · ★ 47
- Author: haabe
- License: MIT · policy=mirror · the beginning of the file is at the end of this page
- Source: https://github.com/haabe/mycelium/tree/HEAD/plugins/mycelium/skills/definition-of-done/SKILL.md
- Updated: 2026-10-24
- HTML: https://affpapa.org/en/nevibecode/skills/definition-of-done

## What it does

The skill audits a task against its acceptance criteria and a checklist covering functionality, code quality, tests, security, accessibility, documentation, observability, deployment, and process. Each item needs evidence from the current state, such as a file or test result. Intent, partial progress, and remembered earlier work do not count as proof.

This skill is designed to run within Mycelium. Used on its own, it skips canvas state, theory gates, and harness behavior that the checklist assumes. To install in Claude Code, run `npx skills add haabe/mycelium --skill definition-of-done -a claude-code`; the skill file is at `~/.claude/skills/definition-of-done/SKILL.md`.

## Install

### Claude Code (native platform)

1. **Skills CLI (Vercel)**
```bash
npx skills add haabe/mycelium --skill definition-of-done -a claude-code
```

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

### Codex

1. **Skills CLI (Vercel)**
```bash
npx skills add haabe/mycelium --skill definition-of-done -a codex
```

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

### Cursor

1. **Skills CLI (Vercel)**
```bash
npx skills add haabe/mycelium --skill definition-of-done -a cursor
```

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

### GitHub Copilot

1. **GitHub CLI**
```bash
gh skill install haabe/mycelium definition-of-done
```

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

### Gemini CLI

1. **Skills CLI (Vercel)**
```bash
npx skills add haabe/mycelium --skill definition-of-done -a gemini-cli
```

2. **Platform CLI**
```bash
gemini skills install https://github.com/haabe/mycelium --path plugins/mycelium/skills/definition-of-done
```

### Windsurf (Devin Desktop)

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

### OpenCode

**Skills CLI (Vercel)**
```bash
npx skills add haabe/mycelium --skill definition-of-done -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/haabe/mycelium/tree/HEAD/plugins/mycelium/skills/definition-of-done/SKILL.md

## When to use it
- audit acceptance criteria before closing a task
- tie each requirement to files or test results
- spot checklist items that lack evidence
- check whether passing tests cover the new code

## Example prompts
- Audit this task against its acceptance criteria and show evidence for each item.
- Before closing the story, check the current files and test results against the completion checklist.
- Check whether the tests exercise the changes, and list any criteria you cannot verify.

## 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: 41f62bf5259e8505.

BEGIN THIRD-PARTY FILE 41f62bf5259e8505
```text
---
name: definition-of-done
description: "Use to verify a feature/story meets all Definition of Done criteria before marking complete."
metadata:
  instruction_budget: "65"
  framework_dependency: "mycelium"
  framework_dependency_note: "This skill is designed to run within the Mycelium framework (https://github.com/haabe/mycelium). Standalone use will skip the canvas state, theory gates, and harness behavior the skill assumes. Install: /plugin install mycelium@haabe-mycelium."
---

# Definition of Done Skill

DoD checklist enforcement.

## Completion Audit: Anti-Bias Clauses

Before checking any item below as DONE, perform a completion audit against the actual current state, not against intent or memory:

- **Restate the acceptance criteria** as concrete deliverables. Map every numbered requirement, named file, command, test, or gate to specific evidence.
- **Inspect real evidence** for each item — actual file contents, command output, test results, gate output, PR state. Not "I implemented it" — "here is the file at this path showing it."
- **Verify proxies actually cover the requirement.** A passing test suite, a green CI status, a complete-looking implementation are useful evidence ONLY if they cover what was asked. A test that passes but doesn't exercise the new code is not coverage. A green typecheck on a file that wasn't edited is not validation of the change.
- **Treat uncertainty as not-done.** If you can't verify an item with evidence, the item is NOT DONE. Do more verification or continue the work.

Do not rely on any of the following as proof of completion:
- **Intent** — "I meant to do X" is not "X is done"
- **Partial progress** — "I started X" is not "X is complete"
- **Elapsed effort** — "I spent time on X" is not "X works"
- **Memory of earlier work** — re-verify; the state may have changed
- **A plausible final answer** — fabricated test output, hallucinated file contents, or a confident summary that wasn't checked against reality is the canonical failure mode this skill exists to prevent

These clauses address two documented Mycelium failures: **Eval Overfitting** (2026-04-30 — agent encoded eval answers into documentation to "pass," gaming the proxy instead of checking the criterion) and **SessionStart relay leak** (2026-05-02 — agent declared turns complete while skipping protocol steps). Borrowed from OpenAI Codex `/goal` continuation template's completion-audit specification (logged 2026-05-03).

## Checklist

### Functionality
- [ ] All acceptance criteria met and demonstrable
- [ ] Happy path works end-to-end
- [ ] Edge cases handled (empty, null, max, concurrent)
- [ ] Error states handled with user-friendly messages

### Code Quality
- [ ] Code reviewed (self-review minimum, peer review preferred)
- [ ] No linting errors or warnings
- [ ] No type errors
- [ ] Engineering principles followed (DRY, KISS, YAGNI, SoC, SOLID)
- [ ] No TODO/FIXME/HACK comments left without linked issue
- [ ] No commented-out code

### Testing
```
END THIRD-PARTY FILE 41f62bf5259e8505

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