OpenAPI Specification

The OpenAPI Specification (OAS), previously known as the Swagger Specification, is a specification for a programming language-agnostic, machine-readable interface definition language for describing, producing, consuming, and visualizing web services. OpenAPI documents describe API services and are represented in YAML or JSON formats.

GitHub: https://github.com/topics/openapi
Wikipedia: https://en.wikipedia.org/wiki/OpenAPI_Specification
Repo: https://github.com/OAI/OpenAPI-Specification
Created by: OpenAPI Initiative, Tony Tam, Darrel Miller, Mike Ralphson, Ron Ratovsky, Uri Sarid, Jason Harmon
Released: August 10, 2011
Related Topics: json-schema, raml, rest-api,
Aliases: open-api, swagger-spec, swagger-specification, openapi-spec, openapi-specification, open-api-specification, oas, openapi-description,
Last updated: 2026-07-08 00:22:40 UTC
JSON Representation

https://github.com/esn8der/tour-of-heroes-api

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https://github.com/robsonlmds/java-screenmatch

Este projeto é uma aplicação Java que utiliza uma API para buscar informações sobre séries de TV e seus episódios, permitindo que os dados sejam armazenados e listados através de um repositório.

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https://github.com/lsegg/delilah-resto

This project proposes the creation of an online ordering system for a restaurant.

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https://github.com/developerkunal/openmorph

OpenMorph: Modern CLI & TUI for safe, interactive OpenAPI vendor extension key transforms with colorized diffs, dry-run, and config merging.

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https://github.com/drewalth/openapi-generator

Generate an OpenAPI Spec file from ORM model definitions

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https://github.com/zaydiscold/goodreads-cli

Unofficial CLI + MCP for the full Goodreads API — shelves, ratings, reviews, friends, feed, giveaways (read + write). The API map is the product.

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https://github.com/andrecaiado/spring-boot-openapi

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https://github.com/go-api-libs/jobicy

Go library for the Remote Jobs API/RSS Feed. Discover and integrate a diverse range of remote job listings with Jobicy's public API. This API offers the latest remote job opportunities across various industries and regions, making it a valuable resource for developers and businesses looking to enhance their job feed platforms.

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https://github.com/met-dev/gamesellingproject

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https://github.com/n8n-code/n8n-nodes-ondo-finance

Ondo Finance institutional-grade tokenized real-world assets platform bridging traditional finance and DeFi protocols

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https://github.com/dhslegen/disciplined-delivery-toolkit

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https://github.com/h0rv/zchema

Typed, validated JSON APIs and OpenAPI 3.1 for Zig's std.http.Server

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https://github.com/tarundattagondi/mcp-curate

Turn an OpenAPI/Swagger spec into a high-quality, curated MCP server — consolidates endpoints into clear tools and proves it with an eval harness.

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Python client for Griptape Cloud APIs

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https://github.com/faisalaffan/community-waste-collection-api

REST API for community waste collection — households, pickups, payments, and reports. Built with Go Fiber

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https://github.com/hmartiins/mvp-fullstack-backend-puc-rio

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https://github.com/techinpark/jira-cli

Open source Jira CLI for Jira Cloud REST API v3. Manage issues, comments, transitions, worklogs, and JQL from the terminal or LLM agents.

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https://github.com/subzeroid/hikerapi-mcp

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https://github.com/davidmosiah/delx-agent-utilities

Open-source stateless utility tools for AI agents: URL, DNS, TLS, OpenAPI, x402, JWT, CSV/JSON, cron, and composite reports.

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https://github.com/soenneker/soenneker.wise.openapiclientutil

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https://github.com/sukramj/openccu-loom-types

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https://github.com/apimatic/skills

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https://github.com/jeremi/registry-docs

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https://github.com/nexys-system/openapi-to-idl

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https://github.com/simplicitesoftware/module-openapitools

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https://github.com/swimmwatch/python-opendota

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:books: Training Management System API Specification. Full Stack Web Developer training @ https://technofuturtic.be.

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https://github.com/roberteftene/inventory-app

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https://github.com/fibercrypto/fibercryptopy

Python client library for FiberCrypto wallet API classes

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https://github.com/zaydiscold/goodreads-cli-mcp-api

Goodreads CLI (MCP + API) — unofficial hand-mapped Goodreads web surface, driven by a TypeScript CLI + MCP server over one shared engine (full CLI↔MCP parity). The API map is the product.

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https://github.com/soenneker/soenneker.quo.httpclients

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https://github.com/hoseungme/oas-api-client

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https://github.com/leadpingai/leadping-dotnet

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