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Trigger

Use this skill before you:

• Add a new feature or workflow step
• Introduce a new dependency, MCP server, or CLI integration
• Write a new utility/helper that might already exist
• Copy patterns from another repo (porting)

Outcome

Pick one of: Adopt, Extend, Compose, Build, with a short justification and evidence.

Workflow (Fast)

1. Define the need

   • What is the smallest outcome that solves the problem?
   • Constraints: platform (macOS/Linux/Windows), clients (codex/claude/gemini/opencode), offline needs, security posture.

2. Search locally (before the internet)

   • Code: rg -n "<keyword>" in the repo.
   • Scripts: check scripts/ for existing lifecycle/doctor commands.
   • Docs: check README* and docs/.

3. Search existing skills

   • Repo-local: .codex/skills, .claude/skills, .agents/skills.
   • Global: ~/.codex/skills, ~/.claude/skills, ~/.gemini/skills, ~/.config/opencode/skills.
   • Prefer reusing an existing skill name over creating a near-duplicate.

4. Search the ecosystem (when needed)

   • Prefer official docs and primary sources (project docs, RFCs, standards).
   • Prefer maintained, well-scoped libraries over bespoke code.
   • For agent tooling, check if an MCP server already provides the capability.

5. Decide

   • Adopt: exact match, maintained, acceptable license.
   • Extend: mostly fits; add thin wrapper/adapter.
   • Compose: 2-3 small pieces together beat 1 big framework.
   • Build: no good option; implement minimal + document why.

6. Record evidence

   • Note what you searched, what you found, and why you chose the approach.
   • If a decision affects cross-CLI behavior, add it to a docs/plans/ artifact.