# Crumb Doctor

> Check whether the host environment can run Crumb — 3 host CLI authentication (Claude Code / Codex / Gemini), playwright availability, htmlhint fallback. Returns viable-preset table. Trigger on "환경 점검해줘", "doctor", "어떤 preset 가능?", "preset 가능한 거 알려줘", "is my setup ready?", "what can I run?", "환경 어때?", or before starting a fresh session in an unfamiliar environment. Read-only.

- Skill: `mangowhoiscloud/crumb-doctor` (Agent Skill)
- Install (CLI): `npx skillmds@latest add mangowhoiscloud/crumb-doctor`
- Raw SKILL.md: https://api.skillmd.com/api/skills/mangowhoiscloud/crumb-doctor/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: mangowhoiscloud (https://skillmd.com/u/mangowhoiscloud)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/mangowhoiscloud/crumb-doctor

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# /crumb-doctor — environment health check

When the user asks about environment readiness or what presets are viable:

**Preferred path** — call the `crumb_doctor` MCP tool (no args).

**Fallback path** — `npx tsx src/index.ts doctor`.

Output table: `| Host | Status | Detail |` for Claude Code / Codex CLI / Gemini CLI / playwright / htmlhint. Then `## Recommended preset (for the current environment)` with viable / not-viable per preset.

Explicit slash form: `/crumb-doctor`.

Reference: `src/helpers/doctor.ts`, v0.1 §3 (auth-manager spec).