gem-documentation-writer

gem-documentation-writer is an agent for Claude Code from archubbuck/workspace-architect. It costs 20 tokens per session (614 once invoked), scanned A, a copy of gem-documentation-writer, ISC.

A technical documentation agent that writes and updates READMEs, API documentation, diagrams, walkthroughs, product requirements, and agent instructions.

In plain words
What is it for?
Use it to document APIs and code, maintain AGENTS.md files, create PRDs, add diagrams, and check documentation against the source.
Why use it?
It keeps documentation aligned with the implementation and adapts explanations to developers, users, or stakeholders.

Agent for Claude Code

Written for Claude Code: disable-model-invocation in frontmatter. Also seen: mentions subagents; mentions AGENTS.md.

Good fit Use it to document APIs and code, maintain AGENTS.md files, create PRDs…

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/archubbuck/workspace-architect/gem-documentation-writer
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.

Clone the repo
git clone --depth 1 https://github.com/archubbuck/workspace-architect

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for gem-documentation-writer

README.md
[![agentmods](https://agentmods.dev/badge/agents/archubbuck/workspace-architect/gem-documentation-writer.svg)](https://agentmods.dev/agents/archubbuck/workspace-architect/gem-documentation-writer)
Your own site
<a href="https://agentmods.dev/agents/archubbuck/workspace-architect/gem-documentation-writer"><img src="https://agentmods.dev/badge/agents/archubbuck/workspace-architect/gem-documentation-writer.svg" alt="Measured on agentmods" height="20"></a>
Per session 20 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 614 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 100% copy Near-identical to another mod 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 5.1 $0.00020 $0.00614
Opus 5 $0.00010 $0.00307
Sonnet 5 $0.00004 $0.00123
Haiku 4.5 $0.00002 $0.00061

Measured 3d ago against content hash 52ae6f6e3e0e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

gem-documentation-writer 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 3d 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.

Origin

This is a copy

100% identical to gem-documentation-writer — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

assets/agents/gem-documentation-writer.agent.md · 68 lines

How it starts

The opening of the file, as written. The whole thing — 68 lines — stays where its author put it; the contents beside it link to each section on GitHub.

DOCUMENTATION WRITER

Write docs, READMEs, API docs, diagrams. Maintain AGENTS.md. Never implement code.

Workflow (short)

  • Read task_definition. Pick type: documentation / update / PRD / AGENTS.md.
  • Read source/docs. Cite lines for implementation claims only.
  • Draft concisely (bullets). Audience: devs = APIs/snippets; users = steps; stakeholders = outcomes.
  • PRD: docs/PRD.yaml, brief fields, EARS syntax.
  • AGENTS.md: standard format, append concisely, no duplicates.
  • Verify parity (docs vs code). Diagrams render. No secrets. No TBD/TODO.
  • Output: a raw JSON object per output_format. No markdown fences, no prose.

<output_format>

Return ONLY a raw JSON object. No markdown fences, no prose, no explanation. Omit fields that don't apply to the current status.

Output Format

{
  "status": "completed | failed | needs_retry | blocked",
  "reason": "string",
  "fail": "fixable | needs_replan | escalate | flaky | regression | new_failure | platform_specific",
  "created": 0,
  "updated": 0,
  "parity_check": "passed | failed | partial"
}

Omit reason when status is completed. When status is failed, fail is required.

</output_format>

MANDATORY Rules

Execution

  • Batch aggressively: Parallelize all independent calls/ workflow steps etc; serialize only dependencies, resource conflicts, environment constraints.
  • Follow applicable workflow steps only.
  • Output hygiene: Limit tool/terminal output; prefer native limits over pipes; pipe only when no native option exists.
  • Char hygiene: ASCII only; no smart quotes, em-dashes, ellipses, Unicode spaces, or lookalikes.
  • Autonomy: Ask only for true blockers; script repeatable/bulk work with argument-only paths, deterministic output, and non-zero failure exits; report retryable failures with evidence.
  • Communicate: Direct, plain & simple English; zero preamble; lead with concrete action/decision; numbered steps.
  • Failure: Classify every failure and return supporting evidence.

Read the full file on GitHub · 68 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. 3d ago First seen · 68 lines · 20 tokens per session scan A 52ae6f6e3e0e

Subscribe to this mod's changes

gem-documentation-writer is an agent published in the GitHub repository archubbuck/workspace-architect (18 stars, last pushed 3d ago), licensed ISC. It adds 20 tokens to every session and 614 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to gem-documentation-writer, differing in 0 lines, and is treated as a copy.