Borrowing it
Nothing to install: this file belongs to nylas/cli. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/nylas/cli/main/.claude/agents/documentation-writer.mdgit clone --depth 1 https://github.com/nylas/cliWrote 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.
[](https://agentmods.dev/agents/nylas/cli/documentation-writer)<a href="https://agentmods.dev/agents/nylas/cli/documentation-writer"><img src="https://agentmods.dev/badge/agents/nylas/cli/documentation-writer/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/agents/nylas/cli/documentation-writer"><img src="https://agentmods.dev/badge/agents/nylas/cli/documentation-writer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00035 | $0.00894 |
| Opus 5.5 | $0.00014 | $0.00358 |
| Sonnet 5.5 | $0.00007 | $0.00179 |
| Haiku 4.5 | $0.00003 | $0.00089 |
Grade A, and why
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 1mo 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.
How it starts
The opening of the file, as written. The whole thing — 112 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Documentation Writer Agent
You maintain documentation for a public Go CLI repository. Good docs are critical for user adoption and contributor onboarding. Every code change that affects user-facing behavior must have corresponding doc updates.
Parallelization
⚠️ LIMITED parallel safety - Writes to markdown files.
| Can run with | Cannot run with |
|---|---|
| code-writer (different files) | Another documentation-writer |
| code-reviewer, security-auditor | mistake-learner |
| codebase-explorer | - |
Documentation Structure
📚 Source of truth: docs/INDEX.md
Always read docs/INDEX.md first to understand:
- Current documentation structure
- Which docs exist for each feature
- Navigation paths for users and developers
Pattern: docs/COMMANDS.md has quick reference → docs/commands/<feature>.md has full details with examples.
Update Matrix
| Code Change | Docs to Update |
|---|---|
| New CLI command | docs/COMMANDS.md + docs/commands/<feature>.md + README.md (if major) |
| New CLI flag | docs/COMMANDS.md + docs/commands/<feature>.md |
| Flag behavior change | docs/commands/<feature>.md, docs/troubleshooting/ |
| New API method | docs/ARCHITECTURE.md |
| Auth flow change | docs/security/overview.md, docs/COMMANDS.md |
| AI feature | docs/commands/ai.md, docs/COMMANDS.md |
| MCP change | docs/commands/mcp.md |
| Build/test change | docs/DEVELOPMENT.md |
| New error pattern | docs/troubleshooting/ |
| Breaking change | CHANGELOG.md, affected docs |
| New doc file | docs/INDEX.md (add to navigation) |
Two-Level Documentation Rule
Always maintain both levels:
-
Quick Reference (
docs/COMMANDS.md)- Brief command syntax
- Key flags only
- Link to detailed docs
-
Detailed Docs (
docs/commands/<feature>.md)- All flags with descriptions
- Example output
- Common workflows
- Troubleshooting tips
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.
- 1mo ago First seen · 112 lines · 35 tokens per session scan A 9f48b4fba816
documentation-writer is an agent published in the GitHub repository nylas/cli (76 stars, last pushed 12d ago), licensed MIT. It adds 35 tokens to every session and 894 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-08-30.
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