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cozempic Doctor (Claude Code Health Check)

Diagnoses your Claude Code config and sessions to pinpoint common failure causes, with an optional auto-fix.

UtilitiesBeginner★ 420⑂ 38AI score 8/10Last updated: Jul 3, 2026

What it does

Runs cozempic doctor to health-check your Claude Code environment, covering:

  • Trust dialog hang — Windows resume bug caused by a .claude.json trust entry
  • Missing hooks trust flag — absent hasTrustDialogHooksAccepted makes hooks fail silently (v2.1.51+)
  • Agent model mismatch — subagents not inheriting the team lead's model, causing 403s
  • Corrupted .claude.json — truncated/invalid file from concurrent write races
  • Corrupted tool_use / orphaned tool_result blocks — classic sources of 400 API errors
  • Zombie team dirs, oversized sessions, stale .bak backups, disk footprint

Detected problems can be repaired with cozempic doctor --fix.

Who it's for

  • Claude Code users hitting mysterious 400/403 errors or hangs
  • Anyone wondering why their hooks never fire
  • Windows users whose sessions won't resume
  • Users who want to reclaim disk space from old sessions and backups

Examples

  1. "Claude Code keeps returning 400 errors — find out why" → detects corrupted tool_use or orphaned tool_result blocks
  2. "My hooks aren't running" → checks the missing trust flag and repairs it with --fix
  3. "How much disk is Claude Code using? Clean up old backups" → disk usage report plus stale .bak cleanup

· · · Install guide · · ·

Try it now, no install

Paste this into Claude to use the skill without installing anything.

Read the instructions in this file and follow them to help me:
https://raw.githubusercontent.com/Ruya-AI/cozempic/HEAD/plugin/skills/cozempic-doctor/SKILL.md

What I want: (describe your task here)

If Claude can't open the link, open it yourself and paste the contents instead.

↓ If it works for you, download the ZIP below and install it. Then it runs on its own — no pasting each time.

Install in the Claude app (no terminal)
  1. Download the ZIP with the button below.
  2. In Claude, open Settings → Capabilities and turn on 'Code execution and file creation'. (one time)
  3. Go to Customize → Skills → + → 'Upload a skill' and upload the ZIP.
↓ Download ZIP
Install in Claude Code

Let Claude do it — paste this into Claude Code

Install the skill I found on Claude Skill Mart.
Copy the plugin/skills/cozempic-doctor folder from the GitHub repo Ruya-AI/cozempic into my ~/.claude/skills/cozempic-doctor/.
When it's done, tell me in one line what this skill can do.

Install with a command instead

git clone https://github.com/Ruya-AI/cozempic.git && mkdir -p ~/.claude/skills && cp -r cozempic/plugin/skills/cozempic-doctor ~/.claude/skills/

⚠ This is a third-party skill. Check the source repository before installing.

  1. Open a terminal.
  2. Clone the repo: git clone https://github.com/Ruya-AI/cozempic.git
  3. Create the skills folder: mkdir -p ~/.claude/skills
  4. Copy the skill: cp -r cozempic/plugin/skills/cozempic-doctor ~/.claude/skills/
  5. This skill needs the cozempic CLI. Follow the repo README to install it, then verify with cozempic --version.
  6. Restart Claude Code and ask "run a health check on my Claude Code setup" to trigger the skill.
  7. Back up ~/.claude.json before running the auto-fix mode.
View source on GitHub ↗License: MIT