Guide · Agent skill

How to use the API SDK Generator agent skill

Updated 2026-10-29 · written with AI from the project's own documentation and checked against our catalogue data

The api-sdk-generator skill lets an AI agent draft a starter client library for a REST API you point it at. It is written for developers who need a first-pass SDK or API wrapper, with a base client, resource classes, typed models, error classes and pagination helpers. After reading this guide you will know what the skill produces, how to install it, how to ask for it in plain language, and what to check before you trust the output.

API SDK Generatorsickn33/agentic-awesome-skills · MIT Download the skill

Quick start

1Download the ZIP. Get the api-sdk-generator ZIP from the skill's page on this site.
2Install the skill. Unzip it into ~/.claude/skills/ for personal use or into a project's .claude/skills/ folder, or upload the ZIP under Settings, Capabilities, Skills in the Claude apps.
3Gather the API contract. Collect the endpoints, authentication method, sample requests and responses, and pagination style for the API.
4Make a natural request. Ask for an SDK or API wrapper in your target language, naming the API and the resources you need.
5Review the draft. Check the folder layout, models, error classes and retry behaviour against the real API documentation.
6Test before use. Run the generated client against a test environment and add your own tests.

What is an agent skill, and what does this one do?

An agent skill is a folder of instructions (here, a SKILL.md file) that an AI agent loads when your request matches the skill's description. This skill tells the agent how to structure and write client SDK code for any REST API.

Base client with base URL, Bearer authentication and a 30-second timeout
Resource classes, such as users or orders, with methods like list, get, create and delete
Typed request and response models (dataclasses in Python, interfaces in TypeScript)
Typed error classes for statuses such as 401, 403, 404, 422, 429 and 5xx
Pagination helper for page-envelope endpoints
A User-Agent header on every request

Install the api-sdk-generator skill

Download the ZIP from the skill's page on this site. The skill package contains a single file, SKILL.md. Install it in one of two ways.

Option 1: unzip it into your personal skills folder, ~/.claude/skills/, or into a project's .claude/skills/ folder to share it with a team working in that repository.

Option 2: in the Claude apps, open Settings, then Capabilities, then Skills, and upload the ZIP.

~/.claude/skills/api-sdk-generator/SKILL.md

How do you trigger the skill with a natural request?

You do not need a special command. The skill is meant to be used when you ask for SDK or client library work. The source lists phrases such as "generate an SDK", "write a client library", "create API wrappers" and "generate TypeScript types from my API". Name the API and the language you want, and include the endpoints or the API contract if you have them.

Generate a Python client library for the orders and users endpoints of our internal REST API.
Write a TypeScript API wrapper for this OpenAPI description, with typed models and error classes.
Create API wrappers for the third-party REST API in this repository, with pagination helpers.

What output should you expect?

The skill asks for a folder layout with client, resources, models, errors and utils files. Each generated class should come with a usage example. The examples in the skill are in Python and TypeScript.

The output is a draft. The skill itself says production readiness requires the real API contract, tests and review in the target language.

sdk/client, resources/users and resources/orders, models/user, errors and utils/retry and utils/pagination
Python examples built on httpx; TypeScript examples built on fetch
Retry logic only for operations documented as safe or idempotent

sdk/
├── client.{ext}
├── resources/
│   ├── users.{ext}
│   └── orders.{ext}
├── models/
│   └── user.{ext}
├── errors.{ext}
└── utils/
    ├── retry.{ext}
    └── pagination.{ext}

What safety rules does the skill apply?

The skill sets rules that shape the code it writes. It does not replay non-idempotent writes such as POST automatically. Error messages are meant to be redacted, so bodies and secrets are not exposed. Retries are bounded, use Retry-After values with capped delays and jitter, and only apply where the API documents support.

The skill also asks for a base URL restricted to trusted HTTPS origins, encoded path identifiers, and no forwarding of authorization headers on redirects. Python clients should be closed in a finally block or a context manager.

What does the skill need, and what does it run?

The skill lists no requirements. It does not run scripts and does not use the network by itself. The code it writes will need your own runtime, such as Python with httpx or a TypeScript environment with fetch, and your own tests.

Limits: it does not handle binary, streaming or non-JSON responses. The skill notes these need separate handling. Its pagination helper expects a page-envelope endpoint that returns data and total_pages, so it will not fit a plain list endpoint without adaptation.

Tips for better results

Give the agent the real API contract, such as an OpenAPI file or sample requests and responses. Without it, the agent has to guess field names and types.

Ask for one resource at a time when the API is large. Review each generated file before moving on.

Run the generated code against a test or sandbox environment, and have a developer review language-specific details.

Paste sample JSON for each endpoint so models match real fields
Check how the API paginates (page numbers, cursors or Link headers) before using the helper
Keep credentials out of the prompt and out of generated files

What people use it for

Starting a Python client for an internal REST API so each team member does not hand-write requests
Producing a TypeScript wrapper with typed models for a third-party API your front end calls
Showing a team consistent error classes for 401, 404, 422 and 429 responses across resources
Learning retry, pagination and error-handling patterns from the example code

Frequently asked questions

How do I install the api-sdk-generator skill?

Download the ZIP from this site and unzip it into ~/.claude/skills/ for personal use, or into a project's .claude/skills/ folder for a shared repository. You can also upload the ZIP in the Claude apps under Settings, Capabilities, Skills.

What do I need to use the api-sdk-generator skill?

The skill lists no requirements and runs no scripts. You need an agent that supports skills and a runtime for the code it writes, such as Python with httpx or TypeScript, plus your own tests.

Is the api-sdk-generator skill free to use?

The skill is published under the MIT licence, as stated in its source file. Check the licence file in the source repository if you need the full terms.

Can the skill generate production-ready SDKs?

Not on its own. The skill describes its output as a draft, and says production readiness requires the actual API contract, tests and review in the target language.

Does it work with APIs that return files or streams?

The skill says binary, streaming and non-JSON responses need separate handling. Its examples assume JSON bodies other than 204 No Content.

How does it compare with OpenAPI code generators?

The skill does not appear to be a generator that reads an OpenAPI spec and outputs code. It writes SDK code with an AI agent from your description and any contract you provide, so the result depends on what you give it and needs more review.

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Our verdict

Use this skill if you are a developer who needs a first-pass client library or API wrapper for a REST API, with consistent models, error classes and safety rules to start from. Pick something else if you need a production SDK without human review, you cannot run or check generated code, or your API mainly returns binary or streaming data.

Download the skill