# OpenAPI Catalog

> OpenAPI Catalog (https://openapicatalog.com) is a free, open-source catalog of 3,076 public OpenAPI/Swagger specifications collected from GitHub and APIs.guru. Every API has a page with a plain-language summary, endpoint count, base URL, authentication type, interactive documentation generated from the spec, a link to the original source, the raw OpenAPI JSON, and a downloadable Bruno collection that can be opened in the Bruno API client.

## How to use this site

- Each API page lives at https://openapicatalog.com/apis/<slug> and includes the full endpoint reference with code examples in many languages.
- The raw OpenAPI document for an API is available at https://openapicatalog.com/apis/<slug>/openapi.json.
- A Bruno collection (ZIP) for an API is available from the download link on its page.
- Category pages list every API on a topic: https://openapicatalog.com/category/<category-slug>.
- The complete index with one line per API is at https://openapicatalog.com/llms-full.txt.

## Categories

- [Cloud & Infrastructure](https://openapicatalog.com/category/cloud-and-infrastructure): 789 APIs
- [Developer Tools](https://openapicatalog.com/category/developer-tools): 755 APIs
- [Media](https://openapicatalog.com/category/media): 378 APIs
- [Open Data](https://openapicatalog.com/category/open-data): 316 APIs
- [Analytics](https://openapicatalog.com/category/analytics): 308 APIs
- [AI & ML](https://openapicatalog.com/category/ai-and-ml): 256 APIs
- [General](https://openapicatalog.com/category/general): 177 APIs
- [Documentation](https://openapicatalog.com/category/documentation): 162 APIs
- [E-commerce](https://openapicatalog.com/category/e-commerce): 100 APIs
- [Finance](https://openapicatalog.com/category/finance): 77 APIs
- [Entertainment](https://openapicatalog.com/category/entertainment): 61 APIs
- [Authentication](https://openapicatalog.com/category/authentication): 54 APIs
- [Text](https://openapicatalog.com/category/text): 54 APIs
- [Messaging](https://openapicatalog.com/category/messaging): 53 APIs
- [Telecommunications](https://openapicatalog.com/category/telecommunications): 52 APIs
- [Location](https://openapicatalog.com/category/location): 51 APIs
- [Security](https://openapicatalog.com/category/security): 46 APIs
- [Database](https://openapicatalog.com/category/database): 44 APIs
- [Payments](https://openapicatalog.com/category/payments): 40 APIs
- [Communication](https://openapicatalog.com/category/communication): 39 APIs
- [IoT](https://openapicatalog.com/category/iot): 37 APIs
- [Transportation](https://openapicatalog.com/category/transportation): 29 APIs
- [Education](https://openapicatalog.com/category/education): 25 APIs
- [Social Media](https://openapicatalog.com/category/social-media): 24 APIs
- [Hosting](https://openapicatalog.com/category/hosting): 20 APIs
- [Collaboration](https://openapicatalog.com/category/collaboration): 19 APIs
- [Email](https://openapicatalog.com/category/email): 13 APIs
- [Marketing](https://openapicatalog.com/category/marketing): 13 APIs
- [Enterprise](https://openapicatalog.com/category/enterprise): 11 APIs
- [Healthcare](https://openapicatalog.com/category/healthcare): 11 APIs
- [Gaming](https://openapicatalog.com/category/gaming): 9 APIs
- [Customer Relations](https://openapicatalog.com/category/customer-relations): 7 APIs
- [Search](https://openapicatalog.com/category/search): 6 APIs
- [Backend & Infrastructure](https://openapicatalog.com/category/backend-and-infrastructure): 3 APIs
- [Forms](https://openapicatalog.com/category/forms): 2 APIs
- [Support](https://openapicatalog.com/category/support): 2 APIs
- [Project Management](https://openapicatalog.com/category/project-management): 1 APIs
- [Storage & Data](https://openapicatalog.com/category/storage-and-data): 1 APIs
- [Time Management](https://openapicatalog.com/category/time-management): 1 APIs

## Most popular APIs

- [Langflow](https://openapicatalog.com/apis/langflow): Langflow is a powerful tool for building and deploying AI-powered agents and workflows.
- [Kubernetes](https://openapicatalog.com/apis/kubernetes): Production-Grade Container Scheduling and Management
- [Kubernetes](https://openapicatalog.com/apis/kubernetes-kubernetes): Production-Grade Container Scheduling and Management
- [tutorials](https://openapicatalog.com/apis/tutorials): Getting Started with Spring Boot 3:
- [mindsdb](https://openapicatalog.com/apis/mindsdb): Federated query engine for AI - The only MCP Server you'll ever need
- [headscale/v1/user.proto](https://openapicatalog.com/apis/headscale-v1-user-proto): An open source, self-hosted implementation of the Tailscale control server
- [Tabby Server](https://openapicatalog.com/apis/tabby-server): Install following IDE / Editor extensions to get started with Tabby. VSCode Extension – Install from the marketplace, or open-vsx.org VIM…
- [Qdrant API](https://openapicatalog.com/apis/qdrant-api): API description for Qdrant vector search engine. This document describes CRUD and search operations on collections of points (vectors with…
- [Qdrant API](https://openapicatalog.com/apis/qdrant-api-qdrant): API description for Qdrant vector search engine. This document describes CRUD and search operations on collections of points (vectors with…
- [Qdrant API](https://openapicatalog.com/apis/qdrant-api-qdrant-v0-10-1): API description for Qdrant vector search engine. This document describes CRUD and search operations on collections of points (vectors with…
- [semantic-kernel](https://openapicatalog.com/apis/semantic-kernel): Integrate cutting-edge LLM technology quickly and easily into your apps
- [faas](https://openapicatalog.com/apis/faas): OpenFaaS - Serverless Functions Made Simple
- [openapi-generator](https://openapicatalog.com/apis/openapi-generator): OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically…
- [openapi-generator](https://openapicatalog.com/apis/openapi-generator-openapitools): OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically…
- [openapi-generator](https://openapicatalog.com/apis/openapi-generator-openapitools-1-0-0): OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically…
- [forem](https://openapicatalog.com/apis/forem): For empowering community 🌱
- [examples/internal/proto/examplepb/visibilityruleechoservice.proto](https://openapicatalog.com/apis/examples-internal-proto-examplepb-visibility-rule-echo-service-proto): Visibility Rule Echo Service Similar to echoservice.proto but with annotations to change visibility of services, methods, fields and enum…
- [examples/internal/proto/examplepb/visibilityruleechoservice.proto](https://openapicatalog.com/apis/examples-internal-proto-examplepb-visibility-rule-echo-service-proto-grpc-ecosystem): Visibility Rule Echo Service Similar to echoservice.proto but with annotations to change visibility of services, methods, fields and enum…
- [mediamtx](https://openapicatalog.com/apis/mediamtx): Ready-to-use SRT / WebRTC / RTSP / RTMP / LL-HLS / MPEG-TS / RTP media server and media proxy that allows to read, publish, proxy, record…
- [A sample API conforming to the OGC Web Feature Service standard](https://openapicatalog.com/apis/a-sample-api-conforming-to-the-ogc-web-feature-service-standard): This is a sample OpenAPI definition that conforms to the OGC Web Feature Service specification (conformance classes: "Core", "GeoJSON"…
- [ComfyUI-Manager](https://openapicatalog.com/apis/comfyui-manager): ComfyUI-Manager is an extension designed to enhance the usability of ComfyUI. It offers management functions to install, remove, disable…
- [formbricks](https://openapicatalog.com/apis/formbricks): Open Source Qualtrics Alternative
- [yugabyte-db](https://openapicatalog.com/apis/yugabyte-db): YugabyteDB - the cloud native distributed SQL database for mission-critical applications.
- [E2B](https://openapicatalog.com/apis/e2b): Open-source, secure environment with real-world tools for enterprise-grade agents.
- [st2](https://openapicatalog.com/apis/st2): StackStorm (aka "IFTTT for Ops") is event-driven automation for auto-remediation, incident responses, troubleshooting, deployments, and…
- [(title)](https://openapicatalog.com/apis/title)
- [(title)](https://openapicatalog.com/apis/title-microsoft)
- [Unkey API](https://openapicatalog.com/apis/unkey-api): The Developer Platform for Modern APIs
- [opentelemetry/proto/profiles/v1/profiles.proto](https://openapicatalog.com/apis/opentelemetry-proto-profiles-v1-profiles-proto): Continuous profiling for analysis of CPU and memory usage, down to the line number and throughout time. Saving infrastructure cost…
- [BOXIL ChatGPT API](https://openapicatalog.com/apis/boxil-chatgpt-api): Help Japanese companies find the best system to enhance their productivity.
- [OpenAgents](https://openapicatalog.com/apis/openagents): [COLM 2024] OpenAgents: An Open Platform for Language Agents in the Wild
- [OpenAgents](https://openapicatalog.com/apis/openagents-xlang-ai): [COLM 2024] OpenAgents: An Open Platform for Language Agents in the Wild
- [OpenAgents](https://openapicatalog.com/apis/openagents-xlang-ai-1-0-0): [COLM 2024] OpenAgents: An Open Platform for Language Agents in the Wild
- [OpenAgents](https://openapicatalog.com/apis/openagents-8939d8af): [COLM 2024] OpenAgents: An Open Platform for Language Agents in the Wild
- [OpenAgents](https://openapicatalog.com/apis/openagents-a1fe3649): [COLM 2024] OpenAgents: An Open Platform for Language Agents in the Wild
- [OpenAgents](https://openapicatalog.com/apis/openagents-66e99f52): [COLM 2024] OpenAgents: An Open Platform for Language Agents in the Wild
- [OpenAgents](https://openapicatalog.com/apis/openagents-85c8a381): [COLM 2024] OpenAgents: An Open Platform for Language Agents in the Wild
- [connexion](https://openapicatalog.com/apis/connexion): Connexion is a modern Python web framework that makes spec-first and api-first development easy.
- [Transformerlab API](https://openapicatalog.com/apis/transformerlab-api): Transformerlab API helps you do awesome stuff. 🚀
- [rudder-server](https://openapicatalog.com/apis/rudder-server): Privacy and Security focused Segment-alternative, in Golang and React
- [openapi-directory](https://openapicatalog.com/apis/openapi-directory): 🌐 Wikipedia for Web APIs. Directory of REST API definitions in OpenAPI 2.0/3.x format
- [openapi-directory](https://openapicatalog.com/apis/openapi-directory-apis-guru): 🌐 Wikipedia for Web APIs. Directory of REST API definitions in OpenAPI 2.0/3.x format
- [openapi-directory](https://openapicatalog.com/apis/openapi-directory-apis-guru-1-0-0): 🌐 Wikipedia for Web APIs. Directory of REST API definitions in OpenAPI 2.0/3.x format
- [openapi-directory](https://openapicatalog.com/apis/openapi-directory-75445019): 🌐 Wikipedia for Web APIs. Directory of REST API definitions in OpenAPI 2.0/3.x format
- [openapi-directory](https://openapicatalog.com/apis/openapi-directory-46189ca9): 🌐 Wikipedia for Web APIs. Directory of REST API definitions in OpenAPI 2.0/3.x format
- [openapi-directory](https://openapicatalog.com/apis/openapi-directory-15199f1f): 🌐 Wikipedia for Web APIs. Directory of REST API definitions in OpenAPI 2.0/3.x format
- [openapi-directory](https://openapicatalog.com/apis/openapi-directory-6455294e): 🌐 Wikipedia for Web APIs. Directory of REST API definitions in OpenAPI 2.0/3.x format
- [openapi-directory](https://openapicatalog.com/apis/openapi-directory-3f8ed15e): 🌐 Wikipedia for Web APIs. Directory of REST API definitions in OpenAPI 2.0/3.x format
- [openapi-directory](https://openapicatalog.com/apis/openapi-directory-f5b7ead8): 🌐 Wikipedia for Web APIs. Directory of REST API definitions in OpenAPI 2.0/3.x format
- [openapi-directory](https://openapicatalog.com/apis/openapi-directory-2262359b): 🌐 Wikipedia for Web APIs. Directory of REST API definitions in OpenAPI 2.0/3.x format

## Other resources

- [About the catalog](https://openapicatalog.com/about): data sources, how specs are converted, and FAQ
- [All categories](https://openapicatalog.com/categories)
- [Sitemap](https://openapicatalog.com/sitemap.xml)
- [Bruno API client](https://www.usebruno.com/): the open-source API client these collections are built for