👨🚀 Turn API specifications into production-ready SDKs, validators, mocks, and more. 20+ plugins. Millions of weekly npm downloads. Used by Vercel, OpenCode, PayPal, AWS, Autodesk, and many more.
Input OpenAPI. Output SDKs and Docs.
Cortex - Generates interactive API documentation, typed SDKs, and MCP servers from OpenAPI, AsyncAPI, GraphQL, gRPC, OpenRPC, and Markdown.
Generates a PHP SDK based on a WSDL, simple and powerful, WSDL to PHP
Generating SDKs for multiple programming languages and platforms ⚙️
OpenAPI 3.x code generator for deterministic, type-safe SDKs and API tooling across languages and runtimes.
The open-source Stainless — point your existing stainless.yml at it and get the same idiomatic Python SDK. Zero migration. No SaaS.
easytemplate is Go's text/template with 🦸 JS super powers 🦸
Best-in-class SDKs generated from OpenAPI, in your favorite languages
Generate interactive API documentation and typed Python SDKs from any OpenAPI specification
Generate typed Python API clients from OpenAPI 3.0/3.1 specs, built on unihttp. adaptix/pydantic/msgspec models, sync & async clients, mypy --strict-clean output
JS-SDKGen is a Javascript SDK Code generator for your API. It uses apidoc definitions from swagger or apidocjs and generates the Javascript SDK automatically. Along with SDK, it also generates SDK usage documentation, thus saving hours of work for you in writing SDK & usage documentation
Open-source SDK generator for OpenAPI 3: idiomatic Rust, TypeScript, Python, Go and Java clients as pull requests. GitHub-native, no cloud, no subscription. Self-hosted alternative to Fern, Speakeasy and Stainless.
Protoc plugin that generates a fully type-safe Vue 3 SDK from your Protobuf schemas — ConnectRPC client, TanStack Query (vue-query) hooks, query-key factory, and message initializers. The Vue-native alternative to connect-query.
A GitHub Action that installs the Fern CLI into a workflow using npm.
Windows x64 Unity IL2CPP metadata workbench for static dumping, package inspection, cross-version migration, and deterministic C++20 SDK generation with UniResolver.
Android Unreal Engine 外部分析与 SDK 生成工具，支持 AutoFix、依赖排序、字段修补与 ProcessEvent Wrapper。
One spec, every SDK. Self-hosted, air-gapped OpenAPI SDK generator: idiomatic SDKs in 6 languages (TS/Python/Go/Java/Ruby/C#) + an MCP server, zero runtime deps, verified on every build.
API docs written by your code — OpenAPI, live REST/WebSocket/GraphQL consoles, mock server & typed SDKs for NestJS, Express, Fastify and Hono. Zero config, zero dependencies.
The Octri command line interface. Drive specs, SDK builds and artifacts from your terminal.
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