API Reference Documentation
secondsky/claude-skills
Creates professional API documentation using OpenAPI specifications with endpoints, authentication, and interactive examples.
Master API documentation with OpenAPI 3.1, AI-powered tools, and modern developer experience practices.
Install API Documenter
$ npx skills add aiskillstore/marketplace --skill api-documenter -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install aiskillstore/marketplace api-documenter --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/sickn33/api-documenter .claude/skills/api-documenter && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "api-documenter" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/sickn33/api-documenter into .claude/skills/api-documenter/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "api-documenter", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/aiskillstore/marketplace/tree/main/skills/sickn33/api-documenterType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add aiskillstore/marketplace --skill api-documenter -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install aiskillstore/marketplace api-documenter --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/sickn33/api-documenter .agents/skills/api-documenter && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "api-documenter" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/sickn33/api-documenter into .agents/skills/api-documenter/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "api-documenter", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add aiskillstore/marketplace --skill api-documenter -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install aiskillstore/marketplace api-documenter --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/sickn33/api-documenter .cursor/skills/api-documenter && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "api-documenter" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/sickn33/api-documenter into .cursor/skills/api-documenter/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "api-documenter", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/aiskillstore/marketplace.git --path skills/sickn33/api-documenter--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add aiskillstore/marketplace --skill api-documenter -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install aiskillstore/marketplace api-documenter --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/sickn33/api-documenter .gemini/skills/api-documenter && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "api-documenter" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/sickn33/api-documenter into .gemini/skills/api-documenter/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "api-documenter", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install aiskillstore/marketplace api-documenterInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add aiskillstore/marketplace --skill api-documenter -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/sickn33/api-documenter .github/skills/api-documenter && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "api-documenter" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/sickn33/api-documenter into .github/skills/api-documenter/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "api-documenter", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add aiskillstore/marketplace --skill api-documenter -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install aiskillstore/marketplace api-documenter --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/sickn33/api-documenter .opencode/skills/api-documenter && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "api-documenter" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/sickn33/api-documenter into .opencode/skills/api-documenter/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "api-documenter", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
api-documenter- GitHub stars
- 430
- Used in
- 7 other repos
- Token cost
- ~2.1k tokens
- SKILL.md length
- 943 words
- Files
- 2
- Skills in repo
- 1,085
- Repo updated
- First seen
- Licence
- None found
At a glance
Master API documentation with OpenAPI 3.1, AI-powered tools, and modern developer experience practices.
- Works in 4 steps: Identify target users, API scope, and… → Create or validate specifications with… → Build interactive docs and ensure… → …
- Tasks that involve Platform engineering
- SKILL.md covers Use this skill when, Do not use this skill when, Instructions and Purpose, plus 6 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
API Documenter is an agent skill from aiskillstore/marketplace. Master API documentation with OpenAPI 3.1, AI-powered tools, and modern developer experience practices. Create interactive docs, generate SDKs, and build comprehensive developer portals.
Its SKILL.md is about 2.1k tokens, which your agent loads only when the skill is triggered. The skill folder holds 1 other file (for example `skill-report.json`).
It sits in Backend & APIs, covering Platform engineering, Technical documentation and OpenAPI specifications. It works with OpenAPI. The repository describes itself as: Security-audited skills for Claude, Codex & Claude Code. One-click install, quality verified.
When your agent uses it
- Tasks that involve Platform engineering
- Tasks that involve Technical documentation
- Tasks that involve OpenAPI specifications
Example prompts
- “/api-documenter”
Workflow steps
4 steps, taken from the first numbered list in SKILL.md.
- Identify target users, API scope, and documentation goals.
- Create or validate specifications with examples and auth flows.
- Build interactive docs and ensure accuracy with tests.
- Plan maintenance, versioning, and migration guidance.
What it can do on your machine
Read from SKILL.md and the folder at commit 4ac52da. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
API Documenter loads about 2.1k tokens when it runs. Until then it costs about 50 tokens; SKILL.md has 943 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
Without a licence we can't republish the file, so here is its outline and opening line. It has 943 words (~2,110 tokens).
“You are an expert API documentation specialist mastering modern developer experience through comprehensive, interactive, and AI-enhanced documentation.”
- name
- api-documenter
- risk
- unknown
- source
- community
- date_added
- 2026-02-27
Files
SKILL.md and 1 other file in skills/sickn33/api-documenter of aiskillstore/marketplace.
- SKILL.md
- skill-report.json
Open the folder on GitHubat commit 4ac52da
Used in 7 other repositories
We found 19 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 7 other GitHub owners. This page covers the copy in aiskillstore/marketplace, which our catalogue first saw on October 7, 2026.
- majiayu000/claude-skill-registryskills/api/antigravity-api-documenterskills/api/api-documenter-sickn33-antigravity-awesome+2 more
- sickn33/agentic-awesome-skillsskills/api-documenterplugins/agentic-awesome-skills/skills/api-documenter+1 more
- rmyndharis/antigravity-skillsskills/api-documenter
- agent-skills-hub/agent-skills-hubskills/api-documenter
- lingxling/awesome-skills-cnantigravity-awesome-skills/skills/api-documenterantigravity-awesome-skills/plugins/agentic-awesome-skills/skills/api-documenter+1 more
- benjaminasterA/antigravity-awesome-skillsskills/api-documenter
- henryalouf/ruflow.agents/skills/api-documenter.agents/skills/antigravity-awesome-skills/skills/api-documenter+4 more
Compare with similar skills
API Documenter next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| API Documenter this skillaiskillstore/marketplace | 430 | 7 repos | ~2.1k | Automated safety check: Pass | None | |
| API Reference Documentationsecondsky/claude-skills | 227 | 1 repos | ~561 | Automated safety check: Pass | MIT | |
| CLI Creatorhuangruiteng/CS-Notes | 4k | 2 repos | ~2.7k | Automated safety check: Pass | Apache-2.0 | |
| Api2clialexknowshtml/api2cli | 455 | — | ~2.9k | Automated safety check: Pass | MIT | |
| OpenAPI Spec Generationwshobson/agents | 40k | 9 repos | ~511 | Automated safety check: Pass | MIT | |
| Sap API Stylesecondsky/sap-skills | 460 | — | ~4.4k | Automated safety check: Pass | GPL-3.0 |
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Related
Works with
Categories
Questions about API Documenter
What does API Documenter do?
Master API documentation with OpenAPI 3.1, AI-powered tools, and modern developer experience practices. API Documenter is an agent skill from aiskillstore/marketplace.1, AI-powered tools, and modern developer experience practices.
When should I use API Documenter?
API Documenter fits situations like: tasks that involve Platform engineering; tasks that involve Technical documentation; tasks that involve OpenAPI specifications.
How do I install API Documenter in Claude Code?
Run `npx skills add aiskillstore/marketplace --skill api-documenter -a claude-code`. Or copy the skill folder (skills/sickn33/api-documenter in aiskillstore/marketplace) into .claude/skills/api-documenter in your project. Claude Code loads it when a task matches its description.
How do I install API Documenter in Codex?
Run `npx skills add aiskillstore/marketplace --skill api-documenter -a codex`. Or copy the skill folder (skills/sickn33/api-documenter in aiskillstore/marketplace) into .agents/skills/api-documenter in your project. Codex loads it when a task matches its description.
Can I use API Documenter in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add aiskillstore/marketplace --skill api-documenter -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/api-documenter, .gemini/skills/api-documenter, .github/skills/api-documenter and .opencode/skills/api-documenter in your project.
What does API Documenter need to run?
SKILL.md names no scripts, command-line tools or credentials: API Documenter is instructions for the agent only.
Does API Documenter access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is API Documenter safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does API Documenter use?
No licence was found for API Documenter or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does API Documenter use?
About 2.1k tokens (SKILL.md is roughly 8.4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to API Documenter?
Skills that share tags, products or a category with API Documenter: API Reference Documentation (secondsky/claude-skills, 227 stars), CLI Creator (huangruiteng/CS-Notes, 4k stars), Api2cli (alexknowshtml/api2cli, 455 stars) and OpenAPI Spec Generation (wshobson/agents, 40k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains API Documenter?
aiskillstore (a GitHub organization) maintains it in aiskillstore/marketplace, which has 430 GitHub stars. The repository holds 1,085 skills in this directory. The repository was last updated on October 7, 2026.
Source: aiskillstore/marketplace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.