Apimatic Validator MCP Server

What is Apimatic Validator MCP Server about?

Apimatic Validator MCP Server provides a lightweight service that receives OpenAPI files, forwards them to APIMatic’s validation API, and returns a concise validation summary. It integrates with Claude Desktop (or any MCP‑compatible client) to enable on‑demand spec checking.

How to use Apimatic Validator MCP Server?

1. Install Node.js v18+.
2. Clone the repository and run npm install.
3. Build the project with npm run build.
4. Add the server to Claude Desktop’s claude_desktop_config.json (or similar MCP client) using the configuration below, supplying your APIMatic API key.
5. Launch Claude Desktop; the hammer icon appears, allowing you to select the validate‑openapi‑using‑apimatic tool.
6. Provide an OpenAPI file and a prompt; the server returns validation results.

Key Features of Apimatic Validator MCP Server

• Supports OpenAPI 2.0 and 3.0.
• Accepts both JSON and YAML formats.
• Calls APIMatic’s comprehensive validation API.
• Exposes the functionality via MCP for seamless IDE or assistant integration.
• Simple configuration through environment variables.

Use Cases of Apimatic Validator MCP Server

• CI/CD pipelines – automatically validate API contracts before deployment.
• Developer assistance – integrate with AI assistants (e.g., Claude Desktop) to get instant spec feedback.
• API design workflows – verify correctness of drafts during iterative design.
• Documentation generation – ensure specs are error‑free before generating docs.

FAQ from the Apimatic Validator MCP Server

Q: Do I need an APIMatic account? A: Yes, an APIMatic API key is required; obtain it from the APIMatic website.

Q: Which Node.js versions are supported? A: Node.js v18 or newer.

Q: Can I run the server locally without Claude Desktop? A: Yes, you can invoke the built index.js directly with Node and feed it OpenAPI files via standard input or a custom client.

Q: How are validation results formatted? A: The server returns a summary object containing errors, warnings, and informational messages produced by APIMatic.

Q: Is there any cost to use the APIMatic validation API? A: APIMatic may have usage limits or pricing; check your APIMatic plan for details.

APIMatic Validator MCP Server

This repository provides a Model Context Protocol (MCP) Server for validating OpenAPI specifications using APIMatic. The server processes OpenAPI files and returns validation summaries by leveraging APIMatic’s API.

Features

• Validates OpenAPI 2.0 and 3.0 files
• Uses APIMatic’s API for comprehensive validation
• Supports both JSON and YAML formats
• Implements Model Context Protocol (MCP) for seamless integration

Installation

Ensure that Node.js v18+ is installed.

Clone the Repository

git clone https://github.com/apimatic/apimatic-validator-mcp.git
cd apimatic-validator-mcp

Install Dependencies

npm install

Build the Project

npm run build

Configuration

To use the server, an APIMatic API key is required. Sign up at APIMatic and obtain the API key.

Integration with Claude Desktop

Modify the claude_desktop_config.json file to integrate the MCP server. If the file does not exist, create one in the following location:

Windows

code $env:AppData\Claude\claude_desktop_config.json

macOS/Linux

code ~/Library/Application\ Support/Claude/claude_desktop_config.json

Add the MCP Server to the Configuration

{
    "mcpServers": {
        "APIMatic": {
            "command": "node",
            "args": [
                "C:\\PATH\\TO\\PARENT\\FOLDER\\build\\index.js"
            ],
            "env": {
                "APIMATIC_API_KEY": "<Add your APIMatic token here>"
            }
        }
    }
}

Once configured, a hammer icon should appear in Claude Desktop. Open it to verify that the validate-openapi-using-apimatic tool is successfully integrated.

Usage

1. Add an OpenAPI file.
2. Provide a prompt to validate it.
3. The validation results will be returned.

APIMatic MCP Server For OpenAPI Validation.webm