Topic · topic
Templates
A cross-industry subject-matter collection covering API design templates, code templates, documentation templates, API specification templates, and templating engines used in API development and integration workflows. Covers OpenAPI templates, AsyncAPI templates, JSON Schema templates, Postman collection templates, and SDK code generation templates.
Resources
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Mustache Templates
Mustache is a logic-less template syntax available for HTML, config files, source code, and more. Used widely for API client SDK generation, documentation generation, and configuration templating.
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Handlebars.js
Handlebars provides the power necessary to let you build semantic templates effectively with no frustration. Widely used in API documentation generation, email templates, and API portal theming.
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Jinja2
Jinja is a fast, expressive, and extensible templating engine for Python. Used in API code generation (Cookiecutter templates), OpenAPI spec generation, Ansible playbooks, and infrastructure-as-code templates.
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OpenAPI Generator
OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec. Supports 50+ languages and frameworks via configurable templates.
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Cookiecutter
A command-line utility that creates projects from project templates. Widely used for API project bootstrapping including FastAPI, Flask, Django REST, and microservice templates with standardized structure.
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Yeoman
Yeoman is a scaffolding tool for modern webapps and APIs. Generators provide templates for REST APIs, Express apps, OpenAPI-first projects, and full-stack applications following community best practices.
Links
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Providers working in Templates
Providers whose own tags share at least two of this topic's tags, most shared first — the top 30 of 111.
| Provider | About | Rating | APIs |
|---|---|---|---|
| Stoplight | Stoplight is a collaborative, design-first API platform providing a visual editor for OpenAPI specifications, interactive hosted documentation, automatic mock servers, API style guides and governance, and open-source tools including Prism… | exemplar | 2 |
| APIMatic | APIMatic is a developer experience platform for APIs that specializes in automated SDK generation, API documentation portal creation, specification validation and linting, and API format transformation. It supports 15+ API specification fo… | strong | 5 |
| Bump.sh | Bump.sh is "the modern API doc platform" — automatic, diff-aware documentation for OpenAPI and AsyncAPI specifications, plus a managed Model Context Protocol (MCP) platform that compiles Flower or Arazzo workflow documents into determinist… | strong | 1 |
| SwaggerHub | SwaggerHub is SmartBear's enterprise collaborative API design and documentation platform built around the OpenAPI specification. It provides tools for designing, building, documenting, and consuming RESTful APIs with support for OpenAPI 2.… | developing | 2 |
| Hey API | Hey API builds open-source OpenAPI code generators and a hosted specification registry. @hey-api/openapi-ts turns an OpenAPI document into production-grade TypeScript — SDKs, types, Zod/Valibot/TypeBox validators, TanStack Query and SWR ho… | developing | 1 |
| OpenAPI Generator | OpenAPI Generator is a community-governed, Apache-2.0 open-source project that generates client libraries (SDKs), server stubs, API documentation and configuration automatically from an OpenAPI Specification (v2 and v3). Forked from Swagge… | developing | 2 |
| Ogen | Ogen is an Apache-2.0 OpenAPI v3 code generator for Go, maintained by the ogen-go organization. It reads an OpenAPI v3 document at build time and emits a statically typed Go client and server: code-generated JSON encoding with no reflectio… | thin | 1 |
| TypeSpec | TypeSpec is an API description language developed by Microsoft for defining API shapes that compile to OpenAPI, JSON Schema, Protobuf, and other output formats. It provides a language and toolchain for describing REST APIs, gRPC services,… | thin | 6 |
| API-Fiddle | API-Fiddle is an interactive, collaborative API design platform for creating professional APIs based on OpenAPI. It provides first-class support for OpenAPI 3.x, data transfer objects, API versioning, suggested response codes, parameter se… | thin | 1 |
| Vacuum | Vacuum is the world's fastest and most versatile OpenAPI linter and toolkit, built in Go for validating and linting API specifications at scale. It is 100% compatible with Spectral rulesets and supports OpenAPI 3.0, 3.1, and 3.2. | emerging | 1 |
| SpecLynx | SpecLynx provides enterprise-ready API tooling for authors and maintainers of OpenAPI, AsyncAPI, and Arazzo specifications. Built by veterans with 15+ years of Swagger and OpenAPI development experience, SpecLynx products prioritize securi… | emerging | 6 |
| Spotlight Rules | Spotlight Rules is an openly-governed build of the Spectral API linter and, more importantly, the first attempt to publish the Spectral ruleset format as a standalone specification with its own portable JSON Schema — so that an organizatio… | emerging | 0 |
| Scalar | Scalar is an open-source API platform built around the OpenAPI standard. It provides API documentation (API References), an offline-first API client, a centralized API registry for managing OpenAPI documents, JSON schemas and Spectral rule… | exemplar | 3 |
| Archbee | Archbee is a documentation and knowledge-portal platform for software teams. It creates, manages and publishes technical documentation, API references and internal wikis, with collaborative editing, revision history, branching and review,… | exemplar | 11 |
| Routebase | API lifecycle platform covering Design (visual OpenAPI editor), Mock (spec-driven mock servers), Test (suites, assertions, OWASP security scanning), Document (published docs portals), and Agents (MCP server), built around a single living O… | strong | 2 |
| Apidog | Apidog is an all-in-one API development platform that connects the entire API lifecycle: visual API design, multi-protocol debugging (HTTP, REST, GraphQL, gRPC, WebSocket, SOAP, SSE), automated testing with a CLI, smart mocking, and publis… | developing | 1 |
| Insomnia | Insomnia is an open-source, cross-platform API development platform by Kong for designing, debugging, and testing HTTP, REST, GraphQL, gRPC, SOAP, WebSockets, SSE, and Socket.IO APIs. It includes an Inso CLI for CI/CD integration, cloud-ho… | developing | 1 |
| Stainless | Stainless is an API developer experience platform that generates best-in-class SDKs, interactive documentation, production-ready CLI tools, MCP servers, and Terraform providers directly from an OpenAPI specification. Trusted by Anthropic,… | developing | 7 |
| Liblab | liblab generates and publishes type-safe, idiomatic SDKs in TypeScript, Python, Java, .NET, Go, PHP, and Terraform from OpenAPI/Swagger/Postman specs, plus MCP servers that expose those APIs to AI agents. The platform ships a CLI, hosted p… | developing | 13 |
| Kiota | Kiota is Microsoft's open source (MIT) API client generator: a command line tool that turns any OpenAPI-described API into a strongly-typed, lightweight client in C#, Dart, Go, Java, PHP, Python, Ruby or TypeScript. It exists to remove the… | developing | 1 |
| API Blueprint | API Blueprint is a high-level API description language using Markdown-based syntax for designing, documenting, and prototyping web APIs. Created by Apiary and released under the MIT License, API Blueprint uses .apib files with a concise Ma… | thin | 1 |
| Orval | Orval is an MIT-licensed open source code generator that turns any valid OpenAPI v3 or Swagger v2 specification into type-safe TypeScript. From one spec it emits HTTP request functions (Fetch by default, Axios optional), TanStack Query hoo… | thin | 1 |
| AutoRest | AutoRest is an open source tool from Microsoft (MIT License) that generates client libraries for accessing RESTful APIs from OpenAPI specifications. It powers generation of Azure SDKs across C#, Python, Java, TypeScript, Go, PowerShell, an… | thin | 6 |
| Fern | Fern is a developer-tools platform that turns a single API specification into idiomatic client SDKs, beautiful API documentation, and MCP servers. Given OpenAPI, AsyncAPI, gRPC/Protobuf, or Fern's own Fern Definition as input, Fern generat… | thin | 1 |
| Oapi-Codegen | oapi-codegen is an open source Go code generator that produces client and server boilerplate from OpenAPI 3.0 and 3.1 specifications with support for Echo, Chi, Gin, Gorilla/Mux, Iris, Fiber, and the standard library net/http router. | thin | 1 |
| Apicurio | Apicurio is an open source API and schema tooling platform maintained by Red Hat under the Apache 2.0 license. It includes Apicurio Registry (a high-performance schema and API design registry), Apicurio Studio (a visual API designer for Op… | thin | 1 |
| Stoplight Elements | Stoplight Elements is an open-source API documentation component library for rendering OpenAPI specifications interactively. It provides embeddable React and Web Components that produce beautiful, interactive API reference documentation fr… | thin | 1 |
| OpenAPI TypeScript Codegen | OpenAPI TypeScript Codegen is an MIT-licensed Node.js library and CLI by Ferdi Koomen that reads an OpenAPI 2.0 or 3.0 specification — JSON or YAML, from a path, URL, or string — and generates a lightweight, fully typed TypeScript client.… | thin | 1 |
| ReDoc | ReDoc is an open-source API documentation renderer for OpenAPI specifications by Redocly. It generates a responsive three-panel documentation layout from OpenAPI 3.1, 3.0, and Swagger 2.0 definitions. The left panel provides a search bar a… | emerging | 1 |
| NSwag | NSwag is the Swagger/OpenAPI toolchain for .NET, ASP.NET Core and TypeScript, written in C# and maintained by Rico Suter under an MIT licence. It runs the contract in both directions: generating Swagger 2.0 and OpenAPI 3.0 documents from A… | emerging | 1 |
Tags
TemplatesAPI DesignCode GenerationDocumentationOpenAPIAsyncAPIDeveloper Tools