snaggle-ai/openapi-mcp-server

Overview

An open-source TypeScript server that translates complex OpenAPI specifications into a simplified interface for AI agents. It uses the Model Context Protocol (MCP) to let language models navigate and invoke API endpoints using natural language prompts.

Best for

Best for
Developers building AI agents that need to dynamically interact with REST APIs via natural language

Use cases

• Enable an AI assistant to call REST APIs from a natural language request
• Simplify integration of third-party APIs into AI workflows without manual endpoint mapping
• Prototype AI-driven automation that interacts with multiple OpenAPI-based services

Notes

An open-source TypeScript server that translates complex OpenAPI specifications into a simplified interface for AI agents. It uses the Model Context Protocol (MCP) to let language models navigate and invoke API endpoints using natural language prompts.

894 stars on GitHub. Last updated 2026-02-21. Licensed MIT.

Use cases

• Enable an AI assistant to call REST APIs from a natural language request
• Simplify integration of third-party APIs into AI workflows without manual endpoint mapping
• Prototype AI-driven automation that interacts with multiple OpenAPI-based services

Pros

• Reduces the need for developers to hand-code API call logic for AI agents
• Actively maintained with nearly 900 GitHub stars and TypeScript codebase
• Works with any OpenAPI-compliant API, offering broad compatibility

Cons

• Requires running a local or hosted MCP server, adding infrastructure overhead
• Performance depends on the complexity and size of the OpenAPI spec being processed
• Limited to APIs that expose a valid OpenAPI specification

Indexed from awesome-mcp-servers-punkpeye and enriched against its public facts.