This MCP enables dynamic conversion of OpenAPI specifications into MCP-compatible tools, allowing REST API endpoints to be accessible as callable functions. It supports multiple HTTP methods, authentication types, and parameter types, facilitating integration with MCP Inspector, Claude Desktop, and other MCP clients. It streamlines exposing API functionalities as tools, making it easy for developers to incorporate REST APIs into MCP-based workflows.
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Created by:
Apr 27 2025
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What is OpenAPI to MCP Server?
The OpenAPI to MCP Server provides a bridge that converts OpenAPI specifications into MCP tools. It exposes REST API endpoints, supporting various HTTP methods, parameters, headers, and authentication mechanisms such as Bearer tokens, Basic Auth, and API keys. The server can be configured with different OpenAPI files and base URLs, and it works with MCP inspector and other MCP clients. Users can easily start the server via command line, linking their APIs to MCP ecosystems, enabling LLMs to perform API operations programmatically. It also supports customizing headers, enabling authentication, and integrating into different application frameworks with environment variables and configuration options for flexible deployments.
Who will use OpenAPI to MCP Server?
- API developers
- MCP client integrators
- AI/ML developers working with LLMs
- Automation engineers
- API testing and integration specialists
How to use the OpenAPI to MCP Server?
- Step 1: Clone the repository and build the project using Maven.
- Step 2: Prepare your OpenAPI specification file and determine your API's base URL.
- Step 3: Run the server with the command: java -jar target/openapi-mcp-0.1.0-SNAPSHOT-jar-with-dependencies.jar /path/to/openapi.json https://api.yourservice.com.
- Step 4: Connect MCP Inspector or Claude Desktop using the configuration instructions provided, specifying your OpenAPI file and URL.
- Step 5: Use the exposed tools to perform API operations within your MCP environment.
OpenAPI to MCP Server's Core Features & Benefits
The Core Features
- Convert OpenAPI specs into callable MCP tools
- Support multiple HTTP methods (GET, POST, PUT, DELETE, etc.)
- Handle path/query parameters and request bodies
- Authentication support (Bearer, Basic, API Key)
- Expose API endpoints as MCP tools
The Benefits
- Enables seamless API integration into MCP workflows
- Automates API operations via LLMs and MCP clients
- Supports a wide range of API authentication methods
- Flexible configuration for diverse API setups
OpenAPI to MCP Server's Main Use Cases & Applications
- Automating interactions with REST APIs in MCP-enabled LLM applications
- Exposing APIs for testing and development within MCP environments
- Integrating third-party API services into MCP-based automation pipelines