# Plan Implementation

> Create structured implementation plans for NEW features, complex additions, or multi-phase work. Use when user asks to "create a plan" or "make an implementation plan" or work requires multiple distinct phases. Outputs a local IMPLEMENTATIONPLAN<feature-name.md file with reconnaissance findings, binary Ideal State Criteria, premortem, phases, and quality gates. For restructuring existing code without changing behavior, use plan-refactor instead. If Claude Code is in plan mode, plan mode itself already produces an in-conversation plan via ExitPlanMode — use review-plan on that draft instead of invoking this skill.

## Facts
- Page: https://tashan.sh/capability/skill-sontek-plan-implementation
- tashan id: skill:sontek/plan-implementation
- Source: https://github.com/sontek/sontek-skills
- Type: skill
- Category: other
- tashan score: not scored (catalogued only — too little public evidence)
- Adoption: 9.0
- Upkeep: 59.0
- Freshness: 89.0
- Evidence coverage: 84% of the inputs this score can use
- Health: active
- Instruction depth: not yet graded
- License: MPL-2.0
- Official: no

## Install

```sh
cp -r plan-implementation ~/.claude/skills/
```

## Security audit
Not scanned. We audit npm-published capabilities; this one has no npm package we can resolve, or has not reached the queue. This is not a clean bill of health.

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Measured 2026-08-14 by tashan (https://tashan.sh) from public evidence. Scorer s5.