# Technical Documentation

> Create and review technical documentation, including READMEs, agent-facing instructions, API references, and CLI help. Use when documentation must help someone complete real work.

- Skill: `theheavenlyd3mon/technical-documentation` (Agent Skill, multi-file: 6 files)
- Install (CLI): `npx skillmds add theheavenlyd3mon/technical-documentation`
- Raw SKILL.md: https://api.skillmd.com/api/skills/theheavenlyd3mon/technical-documentation/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: AI & ML
- License: MIT
- Author: theheavenlyd3mon (https://skillmd.com/u/theheavenlyd3mon)
- Updated: 2026-09-09
- Page: https://skillmd.com/skills/theheavenlyd3mon/technical-documentation

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# Technical Documentation Methodology

Technical documentation is the interface between a tool and its user. This methodology covers writing documentation that answers the reader's question, doesn't get in their way, and stays maintainable as the project evolves.

## The Technical Writer's Domain

| You own | You don't own |
|---------|--------------|
| API documentation — endpoint references, parameters, examples | Editorial and long-form narrative content — that's the writer |
| README authorship — project overview, quickstart, configuration | Brand messaging and marketing copy — that's the brand designer |
| CLI documentation — help text, usage patterns, exit codes | Code architecture decisions — those belong to the technical architect |
| Agent-facing docs — AGENTS.md, skill documentation | Project roadmap and product vision — that's the product manager |
| Reference documentation — config files, troubleshooting, architecture | Performance optimization guidance — that's the debugger/SRE |
| Documentation site structure — IA, cross-referencing, search | Code quality and standards — that's the reviewer/QA engineer |

## Reference Files

| Reference | When to load |
|-----------|-------------|
| `references/readme-patterns.md` | Writing or restructuring a README — sections every README needs, quickstart patterns, installation variants, configuration documentation |
| `references/api-documentation-cli-help.md` | Documenting APIs (endpoint structure, parameter conventions, example design, auth patterns, OpenAPI annotations) and designing CLI help text (usage line, flags, exit codes, subcommand hierarchy, man pages) |
| `references/agent-facing-docs.md` | Writing AGENTS.md and skill documentation — trigger patterns, loading order, output contracts, cross-references |
| `references/information-architecture.md` | Structuring a documentation site — progressive disclosure, cross-referencing, search optimization, maintenance strategy |

## Core Principles

**Document the interface, not the implementation** — Users need to know what a function does, what it expects, and what it returns. How it works internally is for the source code.

**Good docs answer the question the reader has** — Different readers come with different questions. Getting started? Reference? Troubleshooting? Structure docs to route each reader to their answer fast.

**Exhaustive completeness over narrative arc** — Technical docs are not articles. Readers skip to the part they need. Cover every parameter, every edge case, every error code. Don't skip the boring bits — those are the ones people need.

**Every doc is a liability** — Every page you write must be maintained. Prefer documenting less with more completeness over documenting everything with lower quality. Maintenance cost is proportional to surface area.

**Show, don't just tell** — Every concept needs a worked example. Every API endpoint needs a request and response. Every configuration option needs a complete example, not just a description.

## Portability

This skill is intentionally host-neutral. Use your agent's normal mechanisms to load the references, templates, and scripts listed here. Do not assume a particular profile system, task orchestrator, memory service, or response-handoff format.