OpenAPI Client Generators AI Coding Tools

Tools for automatically generating API clients, SDKs, and type definitions from OpenAPI/Swagger specifications. Does NOT include general code generation tools, API testing frameworks, or validation rule engines unrelated to OpenAPI schema consumption.

There are 63 openapi client generators tools tracked. 5 score above 50 (established tier). The highest-rated is reagento/descanso at 63/100 with 130 stars and 625 monthly downloads.

Get all 63 projects as JSON

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#	Tool	Score	Tier	Stars	Language
1	reagento/descanso A modern and simple way to create clients for REST like APIs	63	Established	130	Python
2	mikestead/openapi-client Generate ES6 or Typescript service integration code from an OpenAPI 2 spec	62	Established	93	TypeScript
3	grafana/openapi-to-k6 A CLI tool to convert an OpenAPI schema to a TypeScript client to use with k6.	59	Established	66	TypeScript
4	verizonconnect/ngx-form-generator Generate Angular ReactiveForms from OpenAPI documents	59	Established	46	TypeScript
5	yhnavein/swaggie Tool for generating TypeScript client code for given Swagger API endpoints	54	Established	24	TypeScript
6	vermiculus/apiwrap.el Generate wrappers for your API endpoints!	46	Emerging	50	Emacs Lisp
7	openvalidation/openvalidation Compose validation rules in the language you use every day, openVALIDATION...	43	Emerging	70	Java
8	apioo/typeschema TypeSchema is a JSON format to describe data models in a language neutral format	41	Emerging	165	PHP
9	CreateAPI/CreateAPI Delightful code generator for OpenAPI specs	41	Emerging	443	Swift
10	SamuelMarks/cdd-c OpenAPI ↔ C. Frontend for C, concentrating on: generation from code;...	40	Emerging	9	C
11	apioo/typeapi TypeAPI is an OpenAPI alternative to describe REST APIs for type-safe code...	39	Emerging	74	PHP
12	tyrchen/quenya Quenya is a framework to build high-quality REST API applications based on...	39	Emerging	146	Elixir
13	openapi-json-schema-tools/openapi-json-schema-generator OpenAPI JSON Schema Generator allows auto-generation of API client...	38	Emerging	172	Java
14	Arshia001/FSharp.GrpcCodeGenerator A protoc plugin to enable generation of F# code + supporting libraries	38	Emerging	80	F#
15	vitwit/JS-SDKGen JS-SDKGen is a Javascript SDK Code generator for your API. It uses apidoc...	35	Emerging	7	JavaScript
16	Max-Health-Inc/BabelFHIR-TS Generate profile-aware TypeScript interfaces, validators, and a type-safe...	35	Emerging	8	TypeScript
17	Eximchain/abi2api Autogenerate nodejs server APIs for calling your smart contract's functions via web3.	34	Emerging	4	JavaScript
18	983033995/AutoAPIGen 一款专为 VSCode 打造的高效插件，根据接口文档自动生成 TypeScript 接口请求代码及类型定义，提升开发效率，减少手动编码错误。	34	Emerging	3	TypeScript
19	PierroD/fastapi-crudrouter-mongodb This is the MongoDB version of awtkns CRUDRouter for FastAPI	33	Emerging	9	Python
20	andrenth/ocaml-swagger Swagger 2.0 code generator for OCaml	33	Emerging	43	OCaml
21	onlozanoo/databroom Databroom is a cross-language data cleaning tool with CLI, GUI, and API....	32	Emerging	7	Python
22	Luxoft/gengen Tool for generating models and Angular services based on OpenAPIs and Swagger's JSON.	32	Emerging	17	TypeScript
23	jakubkozera/openapi-ui A modern, feature-rich OpenAPI/Swagger documentation and testing interface...	30	Emerging	42	JavaScript
24	nshkrdotcom/arsenal Metaprogramming framework for automatic REST API generation from OTP operations	30	Emerging	4	Elixir
25	welovecoding/swaxios A Swagger API client generator based on axios and written in TypeScript. 🌊	28	Experimental	17	TypeScript
26	Cstannahill/schemantic A fully typed, extensible, modular TypeScript type generator for OpenAPI...	28	Experimental	7	TypeScript
27	lukoerfer/cake-openapi-generator Cake Addin for code generation via the OpenAPI Generator (f.k.a. Swagger Codegen)	28	Experimental	10	C#
28	openvalidation/openvalidation-openapi Generate OpenAPI service stubs with complete validation layer using this...	26	Experimental	5	Java
29	quotient-im/gtad Generate Things from API Descriptions	26	Experimental	16	C++
30	lukoerfer/cake-codegen-nswag Cake Addin for code generation from OpenAPI specifications via NSwag	26	Experimental	6	PowerShell
31	yugokato/openapi-test-client Dynamically generate/update API test clients from any OpenAPI 3.x...	25	Experimental	4	Python
32	apioo/psx-website Build type-safe REST APIs	24	Experimental	1	MDX
33	type-safe-dx/openapi-typescript-any-client Create type-safe fetcher from OpenAPI 3 specs, with any fetch client, such...	24	Experimental	3	TypeScript
34	JetBrains-Research/rocqstar-rag BigRocq is a utility, that takes a Rocq (former Coq) project as input and...	24	Experimental	10	TypeScript
35	ikemtz/OData-TS-Generator NPM package to create TS client models for OData endpoints	24	Experimental	4	TypeScript
36	VannaDii/tsoa-next Build type-safe OpenAPI APIs for Node.js using TypeScript decorators with...	23	Experimental	1	TypeScript
37	foo-ogawa/micro-contracts Contract-first vertical slices for TypeScript Web/API systems. OpenAPI as...	22	Experimental	—	TypeScript
38	GGROM1/schemantic 🔧 Generate TypeScript types and API clients for OpenAPI schemas with ease...	22	Experimental	—	TypeScript
39	amanguptaofficial/auto-api-client Automatically generate TypeScript API clients and React hooks from...	22	Experimental	—	TypeScript
40	EvanSchleret/laravel-typebridge Bridge Laravel resources to deterministic TypeScript types.	22	Experimental	—	PHP
41	seanpfeifer/twirp-gen Protobuf client code generators for Twirp services...	22	Experimental	7	C#
42	MIDAS-CODE-NET/examples Example projects using the Midas Code API	22	Experimental	—	TypeScript
43	MIDAS-CODE-NET/midas-sdk Official TypeScript SDK for the Midas Code API	22	Experimental	—	TypeScript
44	MukundaKatta/APIForge API scaffold generator — generate FastAPI projects from OpenAPI specs with...	22	Experimental	—	Python
45	urmzd/oag Fast OpenAPI 3.x code generator for TypeScript, React/SWR, and FastAPI —...	22	Experimental	—	Rust
46	ArmanKyro/crypto-exchange-api-catalog 🔍 Discover and catalog cryptocurrency exchange APIs with a versatile tool...	22	Experimental	—	Python
47	beenotung/create-rpc Starter template of Typescript web server with auto-generated client SDK...	22	Experimental	—	TypeScript
48	fazpu/angular-swagger2 Generated code for Angular based on Swagger v2 definition - typings /...	21	Experimental	1	TypeScript
49	NinjaCodeGen/ncg-crud-ngx-bs Angular 4+ Bootstrap 4 CRUD/Admin app by NinjaCodegen	21	Experimental	9	TypeScript
50	celom/drizzle-proto-generator Generate gRPC Protocol Buffer definitions from Drizzle schemas.	19	Experimental	—	TypeScript
51	rohas-dev/rohas Build scalable event-driven applications with schema-driven development....	18	Experimental	4	Rust
52	NinjaCodeGen/ncg-crud-ngx-kui Angular 4+ Kendo UI CRUD/Admin app by NinjaCodegen	17	Experimental	3	TypeScript
53	Kolot-lu/swagger-type-parser CLI tool to generate TypeScript type definitions from OpenAPI/Swagger...	16	Experimental	1	TypeScript
54	taikaiiss/SwaggerAH 🛡️ Detect unauthorized access to Swagger/OpenAPI documents and generate...	14	Experimental	—	—
55	saoudkhalid/open-spec-correct 🤖 Automate API corrections by analyzing descriptions and generating...	14	Experimental	—	Python
56	cmurestudillos/postman-to-swagger-converter Aplicación de escritorio Electron que convierte fácilmente colecciones de...	12	Experimental	1	JavaScript
57	abbish/openvpn-profile-validator When you have a batch of OpenVPN profile files, but some of them may have...	12	Experimental	4	Python
58	AccelByte/extend-codegen-cli AccelByte Extend Code Generator	11	Experimental	—	—
59	teobler/openapi-schema-resolver A tool for resolving openAPI json schema to typescript type definition.	11	Experimental	2	TypeScript
60	TonEnfer/SignalP SignalP - SignalR + Protobuf	10	Experimental	1	C#
61	edgarmedrano/Open4GLWebServices A SOAP stub and WSDL generator for OpenEdge (PROGRESS) built with OpenEdge.	10	Experimental	1	OpenEdge ABL
62	MahdiZarrinkolah/vika-cli A modern, high-performance OpenAPI generator for TypeScript, Zod & Fetch...	10	Experimental	1	Rust
63	ktanaka101/openapi-dry-validation-generator Generate dry-validation(ruby) from openapi spec file	10	Experimental	1	Rust

Comparisons in this category

openapi-client and openapi-to-k6 (62 vs 59) swaggie and gengen (54 vs 32)