29 tools that work with OpenAPI: 23 MCP servers, 6 Agent Skills and 0 Claude Code plugins. 0 of the remote servers answered our live check, 0 worked without an API key, and 1 come from an official or verified publisher. Ranked by GitHub stars plus official, live and free-to-try signals.
Most common uses: Library & API documentation lookup (11), Code search, analysis, refactoring & languages (8), Multi-agent, orchestration & workflows (4), Testing & QA (2).
| Tool | Stars | Last update | License | |
|---|---|---|---|---|
| openapi-spec-generation Generate and maintain OpenAPI 3.1 specifications from code, design-first specs, and validation patterns. Use when creating API documentation, generati SkillInstall · skills CLI | 49,672 | MIT | ||
| oo-component-documentation Create or update standardized object-oriented component documentation using a shared template plus mode-specific guidance for new and existing docs. SkillInstall · skills CLI | 41,140 | MIT | ||
| route-to-openapi Generates RESTful API documentation (OpenAPI 3.0 / Swagger spec) by scanning route definitions in code for Flask, FastAPI, Express, Gin, and other fra SkillInstall · skills CLI | 4,708 | MIT | ||
| api-tester 依据真实 OpenAPI、路由实现和现有测试生成并验证 API 测试。用于用户要求测试接口、补集成测试、验证 API 契约、生成回归用例或排查接口兼容性时；区分“生成测试”和“执行请求”的授权，不猜测状态码、响应结构或 SLA，不在未确认环境中发送写请求。 SkillInstall · skills CLI | 909 | MIT | ||
| openapi-to-skills Generate an Agent Skill from an OpenAPI 3.x file or URL using the openapi-to-skills CLI. Use when asked to convert an API specification into a skill o SkillInstall · skills CLI | 343 | Apache-2.0 | ||
| api-docs OpenAPI documentation and REST API design patterns SkillInstall · skills CLI | 120 | MIT | ||
| Routebase Design, mock, test, document and monitor your APIs from one living OpenAPI spec. MCP serverVerified domain · routebase.devLocal · npm | — | — | ||
| io.github.mockzilla/mockzilla-mcp Mock OpenAPI specs locally, or log in to deploy hosted mocks on mockzilla.org from your MCP client. MCP serverGitHub-verified authorLocal · npm | 5 | MIT | ||
| io.github.pavelpiha/specrun MCP server that converts OpenAPI specs into tools which can query API endpoints MCP serverGitHub-verified authorLocal · npm | 5 | MIT | ||
| io.github.TeodorMCP/universal-connector-mcp Security-first MCP server that connects any OpenAPI, GraphQL, gRPC or SOAP API to AI agents. MCP serverGitHub-verified authorLocal · PyPI | 4 | MIT | ||
| mcpify Focused, production-ready CLI: turn any OpenAPI REST API into an MCP server. MCP serverGitHub-verified authorLocal · PyPI | 2 | MIT | ||
| io.github.akintomiwa-fisayo/openapi-sync-mcp Type-safe MCP server for OpenAPI Sync to inspect, validate, and synchronize OpenAPI specs. MCP serverGitHub-verified authorLocal · npm | 1 | ISC | ||
| mcp-gateway (OpenAPI to MCP) OpenAPI or local API to MCP server, with a public HTTPS tunnel. Rust CLI, any MCP client. MCP serverGitHub-verified authorLocal · npm | 1 | Apache-2.0 | ||
| OpenAPI Lint Lint OpenAPI 3.x documents for missing security, responses, descriptions and versioning. MCP serverGitHub-verified authorLocal · Docker | 1 | MIT | ||
| Sezzlee OpenAPI Expose an OpenAPI document to agents as a search-first tool catalog over your existing API. MCP serverGitHub-verified authorLocal · npm | 1 | MIT | ||
| veto Turn OpenAPI services into tools an agent can call under your rules. MCP serverGitHub-verified authorLocal · Docker | 1 | Apache-2.0 | ||
| API operation Read one operation from a public OpenAPI document: method, path, and required fields. MCP serverGitHub-verified authorRemoteDown | 0 | — | ||
| GenPark Multi-Source OpenAPI Router Mesh Aggregates multiple OpenAPI specifications into a unified virtual routing mesh with service namespac MCP serverGitHub-verified authorLocal · MCPB | — | — | ||
| GenPark OpenAPI Spec to MCP Tool Synthesizer Inspect OpenAPI 3.0 specs and synthesize schema-compliant Model Context Protocol tool declarations w MCP serverGitHub-verified authorLocal · MCPB | — | — | ||
| io.github.infoinlet-marketplace/mcp-openapi Turn any OpenAPI/Swagger spec into MCP tools — each operation an SSRF-guarded tool. MCP serverGitHub-verified authorLocal · npm | — | — | ||
| io.github.LockSpec/lockspec MCP server giving AI coding agents version-pinned API context from your OpenAPI specs. MCP serverGitHub-verified authorLocal · npm | — | — | ||
| io.github.mgaruccio/openapi-navigator Navigate and query OpenAPI specs with fuzzy search, pagination, and API testing MCP serverGitHub-verified authorLocal · PyPI | — | — | ||
| io.github.saurav61091/mcp-openapi-runner Turn any OpenAPI 3.x spec into callable MCP tools for Claude. No custom integration code needed. MCP serverGitHub-verified authorLocal · npm | — | — | ||
| io.github.sethclawd-prog/schemaguard API Schema Drift Monitor — detect breaking changes in OpenAPI specs MCP serverGitHub-verified authorLocal · npm | 0 | MIT | ||
| io.github.thisis-najeeb/api-test-mcp Call the real API and check the response against your OpenAPI spec. MCP serverGitHub-verified authorLocal · npm | 0 | MIT | ||
| k11 API Contract QA Which services an API change breaks and why: OpenAPI, GraphQL, gRPC, AsyncAPI, SOAP. MCP serverGitHub-verified authorLocal · PyPI | 0 | MIT | ||
| MCP API Guardian Local OpenAPI contract and breaking-change checks for AI agents. MCP serverGitHub-verified authorLocal · npm | 0 | MIT | ||
| OpenAPI Services MCP server that fronts any OpenAPI service: discover operations from its spec and call them MCP serverGitHub-verified authorLocal · PyPI | 0 | MIT | ||
| OpenAPI Swagger MCP Discover, preview, call, and inspect configured Swagger/OpenAPI APIs through 11 fixed tools. MCP serverGitHub-verified authorLocal · npm | 0 | MIT |