API Designer
Jeffallan/claude-skills
Designs REST and GraphQL APIs from resource modeling to an OpenAPI 3.1 contract, with versioning, pagination and RFC 7807 error handling.
Generate API endpoint code and documentation from specifications.
Install API Generating
$ npx skills add huangjia2019/claude-code-engineering --skill api-generating -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install huangjia2019/claude-code-engineering api-generating --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/huangjia2019/claude-code-engineering.git skills-src && mkdir -p .claude/skills && cp -r skills-src/04-Skills/projects/05-api-generator .claude/skills/api-generating && 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-generating" agent skill from https://github.com/huangjia2019/claude-code-engineering/tree/main/04-Skills/projects/05-api-generator into .claude/skills/api-generating/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "api-generating", 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/huangjia2019/claude-code-engineering/tree/main/04-Skills/projects/05-api-generatorType 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 huangjia2019/claude-code-engineering --skill api-generating -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install huangjia2019/claude-code-engineering api-generating --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/huangjia2019/claude-code-engineering.git skills-src && mkdir -p .agents/skills && cp -r skills-src/04-Skills/projects/05-api-generator .agents/skills/api-generating && 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-generating" agent skill from https://github.com/huangjia2019/claude-code-engineering/tree/main/04-Skills/projects/05-api-generator into .agents/skills/api-generating/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "api-generating", 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 huangjia2019/claude-code-engineering --skill api-generating -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install huangjia2019/claude-code-engineering api-generating --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/huangjia2019/claude-code-engineering.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/04-Skills/projects/05-api-generator .cursor/skills/api-generating && 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-generating" agent skill from https://github.com/huangjia2019/claude-code-engineering/tree/main/04-Skills/projects/05-api-generator into .cursor/skills/api-generating/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "api-generating", 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/huangjia2019/claude-code-engineering.git --path 04-Skills/projects/05-api-generator--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 huangjia2019/claude-code-engineering --skill api-generating -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install huangjia2019/claude-code-engineering api-generating --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/huangjia2019/claude-code-engineering.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/04-Skills/projects/05-api-generator .gemini/skills/api-generating && 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-generating" agent skill from https://github.com/huangjia2019/claude-code-engineering/tree/main/04-Skills/projects/05-api-generator into .gemini/skills/api-generating/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "api-generating", 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 huangjia2019/claude-code-engineering api-generatingInstalls 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 huangjia2019/claude-code-engineering --skill api-generating -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/huangjia2019/claude-code-engineering.git skills-src && mkdir -p .github/skills && cp -r skills-src/04-Skills/projects/05-api-generator .github/skills/api-generating && 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-generating" agent skill from https://github.com/huangjia2019/claude-code-engineering/tree/main/04-Skills/projects/05-api-generator into .github/skills/api-generating/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "api-generating", 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 huangjia2019/claude-code-engineering --skill api-generating -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install huangjia2019/claude-code-engineering api-generating --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/huangjia2019/claude-code-engineering.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/04-Skills/projects/05-api-generator .opencode/skills/api-generating && 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-generating" agent skill from https://github.com/huangjia2019/claude-code-engineering/tree/main/04-Skills/projects/05-api-generator into .opencode/skills/api-generating/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "api-generating", 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-generating- GitHub stars
- 1.1k
- Used in
- 1 other repo
- Token cost
- ~379 tokens
- SKILL.md length
- 115 words
- Files
- 11 (incl. scripts)
- Skills in repo
- 10
- Repo updated
- First seen
- Licence
- None found
At a glance
Generate API endpoint code and documentation from specifications.
- Works in 4 steps: Identify API Endpoints → Extract Information → Generate Documentation → …
- The user wants to create new API endpoints
- SKILL.md covers Quick Reference, Process, Output Formats and Automation
- Runs Python and Shell scripts from its folder; calls python
What it does
API Generating is an agent skill from huangjia2019/claude-code-engineering. Generate API endpoint code and documentation from specifications. Use when the user wants to create new API endpoints, generate route handlers, scaffold REST APIs, or produce OpenAPI/Swagger specs from code.
Its SKILL.md is about 380 tokens, which your agent loads only when the skill is triggered. The skill folder holds 13 other files, including scripts (for example `EXAMPLES.md`, `PATTERNS.md` and `README.md`).
It sits in Backend & APIs, covering REST APIs and OpenAPI specifications. It works with OpenAPI. The repository describes itself as: This repository demonstrates how to use Claude Code to do real engineering work, not just writing code. 本项目是极客时间专栏 《Claude Code 工程化实战》 的官方配套示例仓库，目标就是： 👉 把 Claude Code…
When your agent uses it
- The user wants to create new API endpoints
- Generate route handlers
- Scaffold REST APIs
- Produce OpenAPI/Swagger specs from code
Example prompts
- “/api-generating”
Requirements
- Python 3
- A Bash shell
- Pre-approved tools (allowed-tools): Read, Grep, Glob, Write, Bash(python:*), Bash(./scripts/*:*)
Workflow steps
4 steps, taken from the step headings in SKILL.md.
- Identify API Endpoints
- Extract Information
- Generate Documentation
- Create Overview
What it can do on your machine
Read from SKILL.md and the folder at commit 89fea03. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves these tools, so the agent can use them without asking each time:
ReadGrepGlobWriteBash(python:*)Bash(./scripts/*:*)
From allowed-tools in the SKILL.md frontmatter.
Runs code
Ships 2 files in scripts/ (Python and Shell), which the agent can run.
Shell commands in SKILL.md call:
python
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 Generating loads about 379 tokens when it runs. Until then it costs about 56 tokens; SKILL.md has 115 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); the scripts in this folder are not scanned.
SKILL.md
Without a licence we can't republish the file, so here is its outline and opening line. It has 115 words (~379 tokens).
“Generate comprehensive API documentation from source code.”
- name
- api-generating
- allowed-tools
- Read, Grep, Glob, Write, Bash(python:*), Bash(./scripts/*:*)
Files
SKILL.md and 10 other files (scripts) in 04-Skills/projects/05-api-generator of huangjia2019/claude-code-engineering.
- SKILL.md
- .claude/skills
- EXAMPLES.md
- PATTERNS.md
- README.md
- STANDARDS.md
- scripts/detect_routes.py
- scripts/validate_openapi.sh
- templates/endpoint.md
- templates/index.md
- templates/openapi.yaml
Open the folder on GitHubat commit 89fea03
Used in 1 other repository
We found 3 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in huangjia2019/claude-code-engineering, which our catalogue first saw on October 7, 2026.
Compare with similar skills
API Generating 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 Generating this skillhuangjia2019/claude-code-engineering | 1.1k | 1 repos | ~379 | Automated safety check: Pass | None | |
| API DesignerJeffallan/claude-skills | 12k | 2 repos | ~2k | Automated safety check: Pass | MIT | |
| OpenAPI to MCP Servermcp-use/mcp-use | 11k | — | ~5.2k | Automated safety check: Pass | Apache-2.0 | |
| Use Yaakmountain-loop/yaak | 19k | — | ~1.9k | Automated safety check: Pass | MIT | |
| Old Coder API DesignAmazingAng/old-coder | 749 | 1 repos | ~3.4k | Automated safety check: Pass | MIT | |
| API CallerNVIDIA/SkillEvaluator | 548 | 1 repos | ~1.1k | Automated safety check: Pass | Apache-2.0 |
Similar skills
OpenAPI to MCP Server
mcp-use/mcp-use
Turns an OpenAPI or Swagger spec into an MCP server with the mcp-use TypeScript SDK, mapping each operation to a tool, wiring auth, testing and deploying.
Use Yaak
mountain-loop/yaak
A skill your agent uses when the user mentions Yaak, a Yaak workspace, or the yaak command, or asks to call, hit, or smoke test HTTP/REST endpoints, save or organize API requests for reuse or manual…
Old Coder API Design
AmazingAng/old-coder
Reviews or designs an HTTP/JSON API's endpoints, auth, pagination, versioning and deprecations, guarding against inventing a bespoke interface or silently breaking consumers.
- Official
API Caller
NVIDIA/SkillEvaluator
Call any REST API dynamically. An agent skill from NVIDIA/SkillEvaluator.
API Endpoint Contract
trycompai/comp
The contract every new or modified API endpoint must follow so it is correct for the public OpenAPI spec, the MCP server (npm @trycompai/mcp-server), the ValidationPipe, and the docs.
More from huangjia2019/claude-code-engineering
All 10 skills in this repoFinancial Analyzing
huangjia2019/claude-code-engineering
Analyze financial data, calculate financial ratios, and generate analysis reports.
API Documenting
huangjia2019/claude-code-engineering
Generate API documentation from code. An agent skill from huangjia2019/claude-code-engineering.
API Generating
huangjia2019/claude-code-engineering
Generate API endpoint documentation from Express route files.
Code Health Check
huangjia2019/claude-code-engineering
Perform a comprehensive code health check on a directory. An agent skill from huangjia2019/claude-code-engineering.
API Conventions
huangjia2019/claude-code-engineering
API design patterns and conventions for this project. An agent skill from huangjia2019/claude-code-engineering.
Code Reviewing
huangjia2019/claude-code-engineering
Review code for quality, security, and best practices. An agent skill from huangjia2019/claude-code-engineering.
Related
Works with
Categories
Questions about API Generating
What does API Generating do?
Generate API endpoint code and documentation from specifications. API Generating is an agent skill from huangjia2019/claude-code-engineering. Generate API endpoint code and documentation from specifications.
When should I use API Generating?
API Generating fits situations like: the user wants to create new API endpoints; generate route handlers; scaffold REST APIs; produce OpenAPI/Swagger specs from code.
How do I install API Generating in Claude Code?
Run `npx skills add huangjia2019/claude-code-engineering --skill api-generating -a claude-code`. Or copy the skill folder (04-Skills/projects/05-api-generator in huangjia2019/claude-code-engineering) into .claude/skills/api-generating in your project. Claude Code loads it when a task matches its description.
How do I install API Generating in Codex?
Run `npx skills add huangjia2019/claude-code-engineering --skill api-generating -a codex`. Or copy the skill folder (04-Skills/projects/05-api-generator in huangjia2019/claude-code-engineering) into .agents/skills/api-generating in your project. Codex loads it when a task matches its description.
Can I use API Generating 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 huangjia2019/claude-code-engineering --skill api-generating -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-generating, .gemini/skills/api-generating, .github/skills/api-generating and .opencode/skills/api-generating in your project.
What does API Generating need to run?
Going by SKILL.md and its folder, API Generating needs Python and a shell for the scripts in its folder and the command-line tools its instructions call (python). Our summary lists: Python 3; A Bash shell. Its frontmatter pre-approves these tools: Read, Grep, Glob, Write, Bash(python:*), Bash(./scripts/*:*).
Does API Generating 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 Generating 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. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
What licence does API Generating use?
No licence was found for API Generating or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does API Generating use?
About 379 tokens (SKILL.md is roughly 1.5k 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 Generating?
Skills that share tags, products or a category with API Generating: API Designer (Jeffallan/claude-skills, 12k stars), OpenAPI to MCP Server (mcp-use/mcp-use, 11k stars), Use Yaak (mountain-loop/yaak, 19k stars) and Old Coder API Design (AmazingAng/old-coder, 749 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains API Generating?
huangjia2019 (a GitHub user) maintains it in huangjia2019/claude-code-engineering, which has 1,133 GitHub stars. The repository holds 10 skills in this directory. The repository was last updated on July 23, 2026.
Source: huangjia2019/claude-code-engineering on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.