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.
npx skills add OneWave-AI/claude-skills --skill api-documentation-writergit clone --depth 1 https://github.com/OneWave-AI/claude-skillsWrote 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/skills/onewave-ai/claude-skills/api-documentation-writer)<a href="https://agentmods.dev/skills/onewave-ai/claude-skills/api-documentation-writer"><img src="https://agentmods.dev/badge/skills/onewave-ai/claude-skills/api-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/skills/onewave-ai/claude-skills/api-documentation-writer"><img src="https://agentmods.dev/badge/skills/onewave-ai/claude-skills/api-documentation-writer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00063 | $0.00434 |
| Opus 5.5 | $0.00025 | $0.00174 |
| Sonnet 5.5 | $0.00013 | $0.00087 |
| Haiku 4.5 | $0.00006 | $0.00043 |
Grade A, and why
api-documentation-writer scanned grade A with 1 finding 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
5. Provide code samples in multiple languages (curl, JavaScript, Python) and link SDKs, Postman collections, or OpenAPI specs where available. What it actually says
API Documentation Writer
Generate comprehensive, developer-friendly API documentation.
Contents
references/documentation-structure.md— every section to cover (overview, auth, endpoints, errors, rate limits, SDKs, webhooks, GraphQL)references/output-template.md— canonical REST Markdown template with worked examplesreferences/best-practices.md— best practices, developer-experience tips, and the output quality checklist
Workflow
-
Gather API information. Determine the API type (REST, GraphQL, WebSocket, gRPC), authentication method (API key, OAuth, JWT), base URL and versioning strategy, available endpoints and their purposes, request/response formats, and any rate limiting or usage restrictions.
-
Build the documentation structure. Cover every section in
references/documentation-structure.md, ordering the most common operations first. -
Generate the output. Follow
references/output-template.mdfor REST APIs; adapt to schema, query, mutation, and subscription examples for GraphQL. Replace all placeholders with realistic example data and show both request and response. -
Document errors and rate limits. Include the standard error response format, common error codes, troubleshooting guidance, limits, headers to check, and how to handle
429responses. -
Provide code samples in multiple languages (curl, JavaScript, Python) and link SDKs, Postman collections, or OpenAPI specs where available.
-
Verify quality against the checklist in
references/best-practices.mdbefore delivering.
Example Triggers
- "Write API documentation for my REST endpoints"
- "Create OpenAPI spec for my API"
- "Document this GraphQL schema"
- "Generate developer docs for my webhook API"
- "Write authentication guide for API"
What ships with it
3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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 · 35 lines · 63 tokens per session scan A c3944495f280
api-documentation-writer is a skill published in the GitHub repository OneWave-AI/claude-skills (376 stars, last pushed 5d ago), licensed MIT. It adds 63 tokens to every session and 434 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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