An MCP server that gives Claude Code, Cursor, Windsurf, or any MCP-compatible AI agent the ability to actually call your API and check the response against what your OpenAPI spec promises — not just…
api-test-mcp is an MCP project maintained in the thisis-najeeb/api-test-mcp repository. The maintainer describes its purpose as “An MCP server that gives Claude Code, Cursor, Windsurf, or any MCP-compatible AI agent the ability to actually call your API and check the response…”. Read the project documentation for the complete scope.
The project provides a local client configuration using node. Follow the repository’s build and installation steps before copying it, and replace example paths with the paths on your own computer.
Project documentation · Repository · Discovery listing. This profile records the public documentation checked on 2026-10-08.
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| Tool | What it does |
|---|---|
| load_api_spec | Load and dereference an OpenAPI/Swagger spec from a URL or local path. Returns the API title, servers, and every documented endpoint. Call this first. |
| list_endpoints | List every endpoint currently loaded. |
| call_endpoint | Make a real HTTP call to a documented endpoint. Returns the real status, headers, and body. |
| validate_response | Check a response body against the JSON schema documented for a given method + path + status. |
| test_endpoint | call_endpoint + validate_response in one step. The main tool — "does this endpoint actually work as documented?" |
| run_all_tests | Best-effort contract-test pass across every GET endpoint that needs no required parameters. Pass includeMutating: true to also auto-generate example… |
| check_health | One-shot ping across a set of endpoints (or every parameter-free GET in the loaded spec): reports reachability and latency. Handy before a demo or as a CI… |
| diff_api_specs | Compare two versions of a spec (e.g. an old tag vs. main) and flag likely-breaking changes — removed endpoints, newly-required fields, type changes, removed… |
{
"mcpServers": {
"api-test": {
"command": "node",
"args": [
"/absolute/path/to/api-test-mcp/src/index.js"
]
}
}
}From the project documentation. Replace placeholders and example paths before connecting.
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