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mcp-openapiThis server reads OpenAPI documentation files from a folder and shares them with your AI code editor. Your assistant can then search for endpoints, review data structures, and pull exact request detai

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Daniel NikulshynReviewed by Daniel Nikulshyn·Updated July 2026

Overview

The mcp-openapi server loads and serves multiple OpenAPI specifications from a directory, enabling LLM-powered IDE integrations. It acts as a bridge between OpenAPI specifications and LLM-powered development tools like Cursor. The server exposes API operations and schemas through the MCP protocol, allowing LLMs to understand and work with APIs directly in the IDE. It supports dereferenced schemas for complete API context and maintains a catalog of available APIs. The server is sponsored by ReAPI, a next-generation API platform. The mcp-openapi server is suitable for developers using LLM-powered IDEs who need to integrate OpenAPI specifications. It works by loading OpenAPI specs from a directory and making them accessible to LLMs in the IDE. A standout capability is its support for multiple OpenAPI specifications and dereferenced schemas. The server can be configured to work with Cursor IDE, either through project-specific or global configuration. The main strength of mcp-openapi is its ability to provide LLMs with direct access to OpenAPI specifications in the IDE. However, it may require configuration and maintenance to ensure that the catalog of APIs is up-to-date and accurate. Compared to alternatives, mcp-openapi seems to be a specialized tool for integrating OpenAPI specifications with LLM-powered IDEs. In terms of limitations, mcp-openapi may have limitations related to the size of the combined metadata of the OpenAPI specifications, which could exceed the LLM's context window if not organized properly. Additionally, the server may require updates to keep up with changes in OpenAPI specifications or LLM-powered IDEs.

Key features

  • Loads multiple OpenAPI specifications
  • Exposes API operations and schemas through MCP protocol
  • Supports dereferenced schemas
  • Maintains a catalog of available APIs

Pricing

Model
Free
Category
MCP Servers
Rating
No reviews yet

Use cases

LLM-powered API Development

Developers use mcp-openapi to integrate OpenAPI specifications with LLM-powered IDEs, enabling direct access to API operations and schemas.

API Documentation and Discovery

mcp-openapi serves as a bridge between OpenAPI specifications and LLM-powered development tools, facilitating API documentation and discovery in the IDE.

Pros & Cons

Pros

  • Enables LLMs to understand and work with APIs directly in the IDE
  • Supports multiple OpenAPI specifications
  • Maintains a catalog of available APIs
  • Powered by ReAPI for reliable performance

Cons

  • May require configuration and maintenance
  • Limited by LLM context window size if not organized properly

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Q&A

What are the limitations of mcp-openapi?

It may require configuration and maintenance, and its performance can be limited by LLM context window size if not organized properly.

Asked by Fatima Zahra · Jun 9, 2025

What are the pros of using mcp-openapi?

It enables LLMs to understand and work with APIs directly in the IDE, supports multiple OpenAPI specifications, and maintains a catalog of available APIs.

Asked by Miriam Cohen · Jun 7, 2025

What features does mcp-openapi have?

It loads multiple OpenAPI specs, exposes API operations and schemas through MCP protocol, supports dereferenced schemas, and maintains a catalog of available APIs.

Asked by Priya Nair · May 20, 2025

What does mcp-openapi do?

It reads OpenAPI documentation files from a folder and shares them with your AI code editor, enabling LLM-powered IDE integrations.

Asked by Yelena Popova · May 16, 2025

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