Health Skill — Codex Configuration Validation

Verify that the Codex Brain configuration is healthy and complete.

Steps

1. AGENTS.md

• Exists and is not empty
• Line count: wc -l < AGENTS.md
• Size: wc -c < AGENTS.md (budget: ≤32KB = 32768 bytes)
• Contains key sections: Skills Roster, Exit Checklist, Terminal Rules

2. config.toml

• .codex/config.toml exists and is valid TOML
• Has #:schema directive on first line
• Has codex_hooks = true under [features]

3. hooks.json

• .codex/hooks.json exists and is valid JSON: jq . .codex/hooks.json
• Hook count: jq '[.. | objects | select(has("command"))] | length' .codex/hooks.json

4. Hook Scripts

• All .codex/hooks/*.sh files exist and are executable:

  for h in .codex/hooks/*.sh; do test -x "$h" || echo "NOT_EXEC: $h"; done
  

5. Subagents

• All .codex/agents/*.toml files exist
• Each has name, description, developer_instructions fields:

  for f in .codex/agents/*.toml; do grep -q 'developer_instructions' "$f" || echo "INCOMPLETE: $f"; done
  

6. Skills

• All .agents/skills/*/SKILL.md files exist
• Each has name: and description: in frontmatter:

  for f in .agents/skills/*/SKILL.md; do grep -q '^name:' "$f" || echo "BAD FRONTMATTER: $f"; done
  

7. Error Log

• brain/tasks/CODEX_ERRORS.md exists (warn if missing)

8. Secrets Scan

git ls-files | xargs grep -l 'BEGIN.*PRIVATE KEY\|password\s*=\s*[^{][^"\x27]\{8,\}' 2>/dev/null | head -10

Report any matches as ⚠️ warnings.

9. MCP Tool Reachability

Check that the required runtimes are available (all MCP tools run via uvx or npx):

command -v uvx &>/dev/null && echo "uvx: ✅" || echo "uvx: ❌ missing — install via: pip install uv"
command -v npx &>/dev/null && echo "npx: ✅" || echo "npx: ⚠️ missing — install Node.js (for playwright)"
command -v ccc &>/dev/null && echo "cocoindex CLI (ccc): ✅" || echo "cocoindex CLI (ccc): ⚠️ optional — install via: pip install cocoindex"
# uvx-based: codebase-memory-mcp, code-review-graph, serena, cocoindex-code-mcp-server (available when uvx installed)

Report Format

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
  Codex Health — <repo>
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
  AGENTS.md budget         ✅ 187 lines / 4.2KB (budget: 32KB)
  config.toml              ✅ valid + schema directive
  hooks.json               ✅ valid JSON, 9 hooks registered
  Hook scripts             ✅ 9/9 executable
  Subagents                ✅ 5/5 complete
  Skills                   ✅ 30/30 have valid frontmatter
  Error log                ✅ CODEX_ERRORS.md exists
  Secrets scan             ✅ no leaks detected
  codebase-memory-mcp      ⚠️ missing — run setup-plugins.sh
  cocoindex (ccc)          ✅ installed
  code-review-graph        ✅ installed
  uvx (playwright/serena)  ✅ installed
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
  Overall: ⚠️ healthy with 1 warning
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

After the table, list any ⚠️/❌ items with one-line fix instructions.

Source: brain-bootstrap/codex-brain-bootstrap — distributed by TomeVault.