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Miko: required Skill checks for Claude Code and Codex

Keep reminding your coding agent to read a required Skill before editing? Miko checks for observable Skill reads before protected edits. When evidence is missing, it pauses the action and tells the agent what to load before retrying. It runs locally, makes no LLM calls, and is free and open source.

The current focus is Claude Code and Codex CLI. Miko is part of Koma; the separate Gate, Scout, and Core packages cover AI application input, request limits, and retrieval. You do not need them to use Miko.

npm install -D koma-miko@alpha
npx koma-miko init --host claude

Edit the generated miko.json to name your project's Skills and protected paths, then start a new Claude Code session. Using Codex? Follow the Codex setup and one-time Hook review. Codex CLI is a Technical Preview; Desktop requires prior CLI activation.

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Miko for Claude Code and Codex

Coding agents can say they loaded a required Skill or ran a test. Miko does not treat that claim as evidence. At supported local host Hooks, it compares observed Skill loads, reference reads, tool actions, and completion checks with a project-owned miko.json.

If an agent tries to edit before satisfying the spec, Miko can return a denial and a short recovery instruction. It cannot inspect hidden model context, prove that a model understood a Skill, or verify events the host never exposes. In Claude CLI guided mode, a genuine scope exception opens one visible Miko choice: allow that exact retry once, or keep the current boundary.

npx --yes koma-miko@alpha demo       # deterministic; no API key
npx --yes koma-miko@alpha probe --host claude  # isolated adapter check; no model
npx koma-miko init --host claude     # after local installation

Shortened. The full README is on GitHub.