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#openapi (30 Repositories)

Ranked open-source repositories tagged with #openapi, scored by pull request acceptance likelihood and maintainer engagement velocity.

Topic Avg Merge Rate

89.0%

Avg Review Latency

49.3h

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30 repositories tagged #openapi

B TierGo 97

mockzilla/mockzilla

Open-source OpenAPI mock server with cloud hosting and local modes for development, testing, and CI. Generates realistic API responses from specs with latency simulation, error injection, proxy fallback, and request validation. Validated against 2,200+ real-world OpenAPI specs.

96.9%
Merge Rate
<1h
First Review
100%
1st-Timers
1
Maintainers
B TierJavaScript 250

seriousme/fastify-openapi-glue

A plugin for the Fastify webserver to autogenerate a Fastify configuration based on a OpenApi(v2/v3) specification.

100.0%
Merge Rate
<1h
First Review
100%
1st-Timers
0
Maintainers
S TierMDMDX 120

surrealdb/docs.surrealdb.com

The documentation for SurrealDB, powered by Astro

93.8%
Merge Rate
1d
First Review
86%
1st-Timers
4
Maintainers
S TierJavaScript 2.0k

platformatic/platformatic

Platformatic Open Source monorepo!

92.4%
Merge Rate
18h
First Review
100%
1st-Timers
13
Maintainers
B TierC# 104

martincostello/openapi-extensions

Extensions for Microsoft.AspNetCore.OpenApi

100.0%
Merge Rate
2d
First Review
100%
1st-Timers
1
Maintainers
S TierTypeScript 3.5k

ardatan/graphql-mesh

🕸️ GraphQL Federation Framework for any API services such as REST, OpenAPI, Swagger, SOAP, gRPC and more...

87.5%
Merge Rate
<1h
First Review
100%
1st-Timers
2
Maintainers
S TierSwift 187

MortenGregersen/Bagbutik

Generated Swift code for the App Store Connect API based on the official OpenAPI spec.

94.6%
Merge Rate
2d
First Review
100%
1st-Timers
2
Maintainers
B TierGo 145

go-openapi/validate

openapi toolkit validation helpers

100.0%
Merge Rate
22h
First Review
100%
1st-Timers
1
Maintainers
S TierGo 1.3k

oasdiff/oasdiff

OpenAPI Diff and Breaking Changes

93.8%
Merge Rate
5h
First Review
100%
1st-Timers
4
Maintainers
S TierGo 4.6k

mvanhorn/cli-printing-press

Every API has a secret identity. This finds it, absorbs every feature from every competing tool, then builds the GOAT CLI — designed for AI agents first, with SQLite sync, offline search, and compound insight commands.

93.5%
Merge Rate
13h
First Review
74%
1st-Timers
37
Maintainers
A TierC# 1.6k 4 GFIs

microsoft/OpenAPI.NET

The OpenAPI.NET SDK contains a useful object model for OpenAPI documents in .NET along with common serializers to extract raw OpenAPI JSON and YAML documents from the model.

88.3%
Merge Rate
1d
First Review
67%
1st-Timers
10
Maintainers
A TierGo 267

speakeasy-api/gram

Securely scale AI usage across your organization. A single stack to Connect, Secure, Observe and Distribute agents, MCPs, and Skills within your company.

82.6%
Merge Rate
2d
First Review
83%
1st-Timers
21
Maintainers
B TierTypeScript 100

swagger-api/apidom

Semantic parser for API specifications

87.8%
Merge Rate
12h
First Review
75%
1st-Timers
1
Maintainers
B TierJava 335

swagger-api/swagger-petstore

100.0%
Merge Rate
<1h
First Review
100%
1st-Timers
1
Maintainers
A TierJava 114

micronaut-projects/micronaut-openapi

Generates OpenAPI / Swagger Documentation for Micronaut projects

87.4%
Merge Rate
2d
First Review
86%
1st-Timers
7
Maintainers
B TierRuby 508

exoego/rspec-openapi

Generate OpenAPI schema from RSpec request specs

88.7%
Merge Rate
<1h
First Review
100%
1st-Timers
1
Maintainers
B TierPython 327

qodex-ai/apimesh

Auto-generate OpenAPI 3.0 specs + interactive HTML API UI from your codebase — in seconds.

100.0%
Merge Rate
-
First Review
100%
1st-Timers
0
Maintainers
B TierTypeScript 199

HiDeoo/starlight-openapi

Starlight plugin to generate documentation from OpenAPI/Swagger specifications

92.9%
Merge Rate
<1h
First Review
100%
1st-Timers
1
Maintainers
A TierGo 599

Mininglamp-OSS/octo-cli

Metadata-driven CLI for AI Agent Bots — 48 operations across 7 domains, structured JSON envelope I/O, zero interactive prompts.

73.7%
Merge Rate
<1h
First Review
60%
1st-Timers
5
Maintainers
B TierPHP 2.2k

dedoc/scramble

Modern Laravel OpenAPI (Swagger) documentation generator. No PHPDoc annotations required.

83.3%
Merge Rate
1h
First Review
100%
1st-Timers
1
Maintainers
A TierTypeScript 2.9k

zenstackhq/zenstack

Modern data layer for TypeScript apps - type-safe ORM, built-in access control, automatic query services

71.4%
Merge Rate
10h
First Review
60%
1st-Timers
7
Maintainers
A TierJavaScript 434

speakeasy-api/speakeasy

Build APIs your users love ❤️ with Speakeasy. ✨ Polished and type-safe SDKs. 🌐 Terraform providers, MCP servers, CLIs and Contract Tests for your API. OpenAPI native.

90.2%
Merge Rate
7d
First Review
90%
1st-Timers
2
Maintainers
A TierGo 803

helixml/helix

♾️ Private Agent Fleet with Spec Coding. Each agent gets their own GPU-accelerated desktop. Run Claude, Codex, Gemini and open models on a full private AI Stack ♾️

93.9%
Merge Rate
6d
First Review
80%
1st-Timers
6
Maintainers
A TierC# 3.8k

microsoft/kiota

OpenAPI based HTTP Client code generator

78.6%
Merge Rate
5h
First Review
87%
1st-Timers
29
Maintainers
A TierTypeScript 215

SAP/cloud-sdk-js

Use the SAP Cloud SDK for JavaScript / TypeScript to reduce development effort when building applications on SAP Business Technology Platform that communicate with SAP solutions and services such as SAP S/4HANA Cloud, SAP SuccessFactors, and many others.

80.2%
Merge Rate
20h
First Review
100%
1st-Timers
18
Maintainers
A TierRust 220

TNO-S3/WuppieFuzz

A coverage-guided REST API fuzzer developed on top of LibAFL

89.6%
Merge Rate
6d
First Review
80%
1st-Timers
6
Maintainers
A TierMAMarkdown 31.2k

OAI/OpenAPI-Specification

The OpenAPI Specification Repository

58.1%
Merge Rate
<1h
First Review
50%
1st-Timers
10
Maintainers
A TierJava 1.7k

standard-webhooks/standard-webhooks

The Standard Webhooks specification

83.3%
Merge Rate
2d
First Review
100%
1st-Timers
4
Maintainers
B TierPython 3.6k

schemathesis/schemathesis

Catch API bugs before your users do

96.7%
Merge Rate
14d
First Review
100%
1st-Timers
1
Maintainers
A TierPython 4.0k 1 GFIs

koxudaxi/datamodel-code-generator

Generate Pydantic v2 models, dataclasses, TypedDict, and msgspec.Struct from OpenAPI, JSON Schema, GraphQL, Avro, Protobuf, and raw JSON/YAML/CSV.

91.1%
Merge Rate
13d
First Review
89%
1st-Timers
2
Maintainers