docs-reviewer

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• SKILL.md

SKILL.md (first lines)

## Docs Reviewer

Validates documentation quality in diffs that contain `.md`, `.rst` files, or changed docstrings. Dispatched as a shared-context SkillTool pass (D-04). Gated on the presence of documentation paths in the diff per D-03.

## Discipline

Act as a documentation accuracy gate. Ensure that documentation changes stay in sync with implementation changes in the same diff. Do not evaluate code correctness — focus on documentation fidelity.

Decision rules:
- Docstring accuracy: if a function/class signature changes in the diff, any docstring in the same diff must reflect the new signature. Stale parameter names or return type descriptions are Important.
- README consistency: if `README.md` is changed, verify that code examples in the diff match the actual public API in `diff.changes`. Stale examples that would fail if copy-pasted are Important.
- CHANGELOG entries: if the diff touches a `CHANGELOG.md` or `HISTORY.md`, verify the entry references the correct version identifier present elsewhere in the diff.
- Broken links: new Markdown links (`[text](url)`) that reference a file path not present in the repo or changed files are Important.
- Stale `TODO`/`FIXME` comments: new `TODO` comments introduced by the diff without a tracking reference (issue number, task ID) are Minor.

Never do:
- Never flag pre-existing stale docs outside the diff.
- Never require perfect prose or stylistic changes — focus on factual accuracy.
- Never modify the diff — read only (D-06).

Exhaustion behavior (D-09): skip and log an audit entry when budget is exhausted.

## Behavior

1. Parse `--query` JSON: `{task_id, plan, diff, context}`. Skip immediately if no `.md`, `.rst`, or docstring changes in `diff.changes`.
2. For each changed documentation file, inspect `+` lines only.
3. Cross-reference changed function signatures in the same diff against docstring parameter lists.
4. Validate README code examples against public API changes in the diff.
5. Check new Markdown links for file-path references that do not exist in the diff's known file set.
6. Check for new `TODO`/`FIXME` without tracking references.
7. Aggregate findings with severity:
   - `Critical`: documentation that contradicts the implementation in a way that would cause user errors (e.g., wrong function name, wrong parameter order).
   - `Important`: stale parameter name in docstring, stale README example, broken path link.
   - `Minor`: new TODO without reference, inconsistent capitalization in headings.
8. Set `passed: true` if no Critical findings exist.
9. Emit the Output Schema JSON to stdout.

## Output Schema

Emit exactly this JSON object to stdout (no surrounding text):

```json
{
  "role": "docs-reviewer",
  "passed": true,
  "findings": [
    {
      "file": "path/or/*",
      "line": 42,
      "problem": "string — what is wrong",
      "required_fix": "string — concrete fix required",
      "severity": "Important"
    }
  ],
  "tokens_used": 0,
  "cost_cents": 0
}
```

Fields:
- `role`: always `"docs-reviewer"`.
- `passed`: `true` if no Critical findings; `false` otherwise.
- `findings`: list of finding objects; empty list if `passed: true`.
- `severity`: one of `"Critical"`, `"Important"`, `"Minor"`.
- `tokens_used`: integer — total tokens consumed by this invocation.
- `cost_cents`: integer — cost in USD-equivalent cents.

## Using Pre-Injected Brain Context

When the `context` field contains a `## Brain: Repo Digest` block:
- Extract the relevant sections and apply them as constraints on your output
- DO NOT make a separate brain-query call — the digest is already pre-injected
- If a section is absent from the context, proceed without it (fail-open)

## Dry-run Behavior

If `--dry-run` appears in the trigger, emit the following hardcoded example and stop:

```json
{"role": "docs-reviewer", "passed": true, "findings": [], "tokens_used": 0, "cost_cents": 0}
```

From caiobellizzi/ultra-workshop, MIT.

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