# write-docs

Produce technical documentation derived from code and spec, one section at a time, with a confirmation gate on every section.

## What it does

Casts the agent as a technical writer with one non-negotiable constraint: **every claim must be traceable to a source file line, a spec section, or an explicit user statement.** Nothing is invented, and behaviour that genuinely cannot be documented from the available sources is marked out-of-scope rather than explained away.

The process is eight steps — identify scope, read and extract, gap check, draft section by section, confirmation gate, delta summary, reader testing, finalise — and several of them are deliberately gated on the human:

- Files are read only after the user approves them by name. The skill may propose candidates; it waits.
- The **gap check** presents what the code does say and asks the user to fill only what it does not: caller intent, error-handling rationale, non-obvious side effects.
- No section is finalised until the full revised text has been shown. The skill never gates on output the user has not seen, and never reprints the whole document — all edits are surgical.
- **Reader testing** predicts 5–10 questions a target reader would ask, then spawns a sub-agent that receives only the finished doc and the questions — no source files. If the doc cannot answer them, neither can the sub-agent, and the run loops back to drafting.

Summary and overview sections are written last, once the detail sections are stable.

## Usage

```text
/write-docs
```

Name the files or modules to document, the target audience (developer / user / contributor / internal), and the documentation type (reference, guide, README section, inline comment, changelog entry). For a PRD, ADR or decision doc, use `grill-me` or `grill-with-docs` instead — those have dedicated handling.

## Files

| File | Purpose |
|------|---------|
| `SKILL.md` | The whole skill — role, use/do-not-use boundaries, required inputs, constraints, the eight-step process, output format, failure handling, and a nine-item self-check |