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# /new-skill — New Skill Workflow
Triggers the **skill-builder** agent.
## Usage
```
/new-skill
```
The agent checks local coverage first, asks targeted questions, then uses `new_skill.py` to scaffold a compliant package. Content is filled into the scaffold — the structure is never written from scratch.
## What Happens
### Step 1 — Coverage Check (do not skip)
```bash
python3 scripts/search_knowledge.py "<topic>" --domain <domain>
```
If `has_coverage: true` is returned, review the existing skill before creating a new one. Extend or differentiate — do not duplicate.
### Step 2 — Scaffold
```bash
python3 scripts/new_skill.py <domain> <skill-name>
```
This creates the full directory structure:
```
skills/<domain>/<skill-name>/
├── SKILL.md ← pre-filled with TODO markers (includes Recommended Workflow section)
├── references/
│ ├── examples.md ← pre-filled with TODO markers
│ ├── gotchas.md ← pre-filled with TODO markers
│ ├── well-architected.md ← official sources PRE-SEEDED for domain
│ └── llm-anti-patterns.md ← 5+ AI-specific mistakes to avoid
├── templates/<skill-name>-template.md
└── scripts/check_<noun>.py ← stdlib-only checker stub
```
`new_skill.py` will warn if coverage already exists and ask for confirmation.
### Step 3 — Fill All TODOs
Every file created by the scaffold has `TODO:` markers. Fill them all:
- `SKILL.md` — description (must include "NOT for ..."), triggers (3+, 10+ chars each), tags, inputs, outputs, well-architected-pillars, full body (300+ words), and `## Recommended Workflow` (3–7 numbered agent steps)
- `references/examples.md` — real examples with context, problem, solution
- `references/gotchas.md` — non-obvious platform behaviors
- `references/well-architected.md` — WAF notes; official sources are pre-seeded, add usage context
- `references/llm-anti-patterns.md` — 5+ mistakes AI assistants make in this domain: wrong output, why it happens, correct pattern, detection hint
- `scripts/check_<noun>.py` — implement the actual checks (stdlib only)
### Step 4 — Sync (validates first, then writes)
```bash
python3 scripts/skill_sync.py --skill skills/<domain>/<skill-name>
```
Validation runs automatically before any artifact is written. If errors are reported, fix them and re-run. Sync will not produce artifacts from a broken skill.
### Step 5 — Add Query Fixture
Add an entry to `vector_index/query-fixtures.json`:
```json
{
"query": "natural-language query a practitioner would type",
"domain": "<domain>",
"expected_skill": "<domain>/<skill-name>",
"top_k": 3
}
```
Then verify:
```bash
python3 scripts/validate_repo.py
```
All fixture queries must pass retrieval. Skills without a fixture produce a WARN that fails CI.
## Quality Gate
A skill is not complete unless `python3 scripts/validate_repo.py` exits 0 with no errors.
## Agent
See `agents/skill-builder/AGENT.md` for full orchestration plan.