spec-docs

A command that creates user-facing and technical documentation from a feature specification and the code that implements it.

In plain words
What is it for?
Use it to generate documentation for APIs, user interfaces, libraries, full-stack features, and infrastructure.
Why use it?
It connects internal development plans with the guides, API references, architecture records, or operations instructions that other people need.

Command

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add commands/habib0x0/spec-driven-plugin/spec-docs
Clone the repo
git clone --depth 1 https://github.com/Habib0x0/spec-driven-plugin
Per session 12 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 610 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00012 $0.00610
Opus 5 $0.00006 $0.00305
Sonnet 5 $0.00002 $0.00122
Haiku 4.5 $0.00001 $0.00061

Measured 2d ago against content hash 308efa4f8fde, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

spec-docs scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

commands/spec-docs.md · 76 lines

How it starts

The opening of the file, as written. The whole thing — 76 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/spec-docs Command

Generate documentation from spec files and implemented code. Produces API references, user guides, architecture decision records, and operations runbooks as appropriate.

Philosophy

Specs are internal dev artifacts. Users, API consumers, and ops teams need different documentation. This command bridges that gap by generating targeted docs from the spec + actual implementation code.

Workflow

1. Locate the Spec

If a spec name is provided, use it. Otherwise auto-detect from .claude/specs/.

2. Analyze What's Needed

Read the spec files and implementation to determine the feature type:

Feature Type Detected By Docs Generated
API/Backend API endpoints in design.md, server routes in code API Reference, ADR
UI/Frontend Components in design.md, UI files in code User Guide, Component Ref
Full-Stack Both API + UI elements All docs
Library/SDK Exported functions, package.json lib config API Reference, Getting Started
Infrastructure Deployment configs, CI/CD, env vars Runbook, ADR

Present the detected type and planned documents to the user via AskUserQuestion:

  • Generate all recommended docs — Proceed with the detected set
  • Let me choose which docs — Pick from the list
  • Custom output location — Specify where docs should be written

Default output location: .claude/specs/<feature-name>/docs/

3. Spawn the Documenter Agent

Delegate to the spec-driven:spec-documenter agent via the Task tool.

Pass the agent:

  • The spec directory path
  • Which documents to generate
  • The output directory
  • Any user preferences about documentation style or audience

4. Present Results

When the documenter returns:

  1. List all generated documents with brief descriptions
  2. Highlight any discrepancies found between design.md and actual implementation
  3. Note any documentation that couldn't be generated (and why)

Ask the user via AskUserQuestion:

  • Looks good — Done
  • Move docs to project root — Copy from spec dir to project docs/ folder
  • Regenerate specific docs — Re-run with adjustments
  • Edit manually — User will refine the generated docs themselves

Read the full file on GitHub · 76 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 76 lines · 12 tokens per session scan A 308efa4f8fde

Subscribe to this mod's changes

spec-docs is a command published in the GitHub repository Habib0x0/spec-driven-plugin (10 stars, last pushed 3mo ago), licensed MIT. It adds 12 tokens to every session and 610 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.