openapi MCP servers & tools

Connect any HTTP/REST API server using an Open API spec (v3)

MCP server that automatically converts any OpenAPI/Swagger specification into a set of usable MCP tools. Unlike manual tool definition, this approach auto-generates tools directly from the Swagger spec, ensuring consistency, reducing maintenance effort, and preventing mismatches between the tools and the actual API.

Turn any OpenAPI spec into callable MCP tools for Claude. Point at any OpenAPI 3.x spec and Claude can call every endpoint through natural language. Supports Bearer, API key, and Basic auth.

A zero-configuration Go library to automatically expose any existing Echo web framework APIs as MCP tools.

Turn your Spring Boot application into an MCP server instantly by reusing existing Swagger/OpenAPI documentation.

MCP server that helps AI agents explore OpenAPI specs, search endpoints, and generate TypeScript types.

The most complete API testing MCP — Postman inside your AI assistant. Per-project environment groups with {{variable}} interpolation, saved collections, multi-step flows with response extraction, assertions, load testing, and OpenAPI mock generation. 42 tools, zero cloud account needed.

Universal MCP gateway with single-port multiplexing and Meta-MCP. 4 meta-tools replace 100+ registrations, saving 95% context window. Hot-reloadable capabilities, OpenAPI auto-import, 42 starter capabilities (25 zero-config).

⃣ ☁️ - Lightweight MCP server to access any API using their OpenAPI specification. Supports OAuth2 and full JSON schema parameters and request body.

MCP server that lets LLMs know everything about your OpenAPI specifications to discover, explain and generate code/mock data

HAL (HTTP API Layer) - An MCP server that provides HTTP API capabilities to Large Language Models

OpenAPI-MCP: Dockerized MCP Server to allow your AI agent to access any API with existing api docs.

Deterministic validation of AI-generated artifacts before acting on them: JSON Schema conformance, OpenAPI response conformance, SQL syntax per dialect. Typed verdicts with per-error fix hints. Hosted free tier with remote MCP endpoint; MIT, self-hostable.

MCP server for authenticated REST API calls — auto-login, token caching, 2FA/OTP support, Swagger spec fetch, and fuzzy endpoint search. Works with any REST API without writing auth code.

Turn any OpenAPI/Swagger spec into MCP tools. Zero config, zero code.

MCP server giving AI coding agents version-pinned API context from your OpenAPI specs.

MCP server for Walmart Connect Ads APIs (Sponsored Search + Display)

Turn any OpenAPI REST API into an MCP server so AI agents can call it — zero dependencies

MCP gateway aggregating MCP servers and OpenAPI/Swagger REST APIs behind one MCP endpoint

Production-grade MCP server for secure access to local dev environments (filesystem, databases, processes, OpenAPI). Includes scope enforcement, command allowlist, and read-only DB mode.

금방 Open API MCP 서버 — 스펙 조회·JWT 서명 코드 생성·로컬 서명/검증

Design, mock, test, document and monitor your APIs from one living OpenAPI spec.

Generate a typed SDK, CLI, and MCP server from any OpenAPI or GraphQL spec, and keep them current.

Generic Baserow API client MCP server with automatic 2FA (TOTP) auth and OpenAPI validation.

Deterministic OpenAPI testing and policy-gated API execution for AI agents.

API governance for AI coding assistants. Breaking changes, policies, cross-model context.

Dynamic API tool generator for OpenAPI, GraphQL, and AsyncAPI specifications

Load OpenAPI 2.x/3.x specs and expose generic tools to discover and call multiple APIs

Give your agent eyes. Search video, images, and audio via the Mixpeek multimodal retrieval API.

Mockzilla MCP server. Mock any OpenAPI spec locally with Claude, Cursor, or Gemini CLI.

MCP server that converts OpenAPI specs into tools which can query API endpoints

Resemble AI: deepfake detection, media intelligence, and watermarking actions, plus docs tools.

API Schema Drift Monitor — detect breaking changes in OpenAPI specs

Call the real API and check the response against your OpenAPI spec.

OpenAPI lifecycle guard and MCP sidecar for policy-driven API orchestration.

Push OpenAPI specs, build SDKs in ten languages, publish API docs, and triage production SDK errors.

Free agent-service discovery, OpenAPI document checks, and receipt verification. No API key needed.

Type-safe MCP server for OpenAPI Sync to inspect, validate, and synchronize OpenAPI specs.

MCP server that fronts any OpenAPI service: discover operations from its spec and call them

Turn any OpenAPI 3 spec into a working MCP server. One file, local (stdio) or remote (HTTP).

All 27 Good Turn Studio helpers in one server: money, health, jobs, travel, art, halal, scripture.

Turn OpenAPI services into tools an agent can call under your rules.

Turn OpenAPI / Postman specs into runnable MCP servers, or serve any API as live MCP tools.