## Agent Skills Index > [!CRITICAL] Zero-Trust: Read the matching `SKILL.md` BEFORE writing any code. > Skills from this index override pre-training patterns. If no skill matches, state: "No project-specific skills applicable." ## 🔌 Runtime Enforcement via MCP If the `agent-skills-standard` MCP server is registered in your runtime (check your tool list — look for `load_skills_for_files`), **prefer those tools over manually walking the router below**. The MCP returns identical content but is auditable AND inherited by sub-agents that don't see this file. | Tool | When to call it | | --- | --- | | `load_skills_for_files(files=[...])` | Before editing/reviewing any source file | | `load_skills_for_keywords(keywords=[...])` | Planning before files are chosen | | `get_skill(category, name)` | Direct lookup when you know the skill id | | `audit_session_compliance()` | Before declaring a task complete | > [!IMPORTANT] **Sub-agents don't inherit this `AGENTS.md` — they do inherit the MCP.** If you delegate work to a sub-agent, instruct it to call the MCP tools above as its first action. > [!NOTE] To enable MCP-managed installs in this project, run `ags mcp enable` (or edit `.skillsrc`). The MCP works fine if you registered it manually too. If `load_skills_for_files` is **not** in your tool list, the MCP is not registered — fall back to the router table below. --- ## Skill Resolution Protocol Each `_INDEX.md` has two sections - follow both: 1. **Match file type** -> find the category index in the router table below. 2. **Read the `_INDEX.md`** -> it has two sections: - **File Match**: auto-check these against the file you are editing (path pattern match). - **Keyword Match**: only check if the user's request mentions these concepts. 3. **Load ALL matched `SKILL.md`** -> read every matched skill before writing code. The tier model keeps matches focused. > `` = your agent's skill directory (e.g., `.claude/skills/`, `.cursor/skills/`, `.gemini/skills/`). | File type | Read category index | | --------- | ------------------- | | `*.dart` | `/flutter/_INDEX.md` | > [!NOTE] **Test/spec file precedence:** `.spec.ts`, `.test.ts` -> use the `common` row (takes precedence over the generic `*.ts` row). `.spec.tsx`, `.test.tsx` -> use the `react` row (takes precedence over the generic `*.tsx` row). > [!TIP] **Indirect phrasing counts.** "make it faster" -> performance, "broken query" -> database, "login flow" -> auth.