MCP API Guardian MCP Server

by petrovicistefan Your server? Claim it

local only

MCP API Guardian runs on your own machine — the client starts it, so there is no endpoint to ping. 557 installs a week from npm. Last commit 9 Oct 2026.

Local OpenAPI contract and breaking-change checks for AI agents.

Installs per day peak 487 · avg 16

a month agotoday

557

Installs / week

npm · mcp-api-guardian

Stars

0 open issues

9 Oct 2026

Last commit

3 releases in 90 days

MIT

License

JavaScript

Nothing serious here today

Today is the operative word: we check MCP API Guardian every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add mcp-api-guardian -- npx -y mcp-api-guardian

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

{
  "mcpServers": {
    "mcp-api-guardian": {
      "args": [
        "-y",
        "mcp-api-guardian"
      ],
      "command": "npx"
    }
  }
}

~/.codex/config.toml

[mcp_servers.mcp-api-guardian]
command = "npx"
args = ["-y", "mcp-api-guardian"]

.cursor/mcp.json

{
  "mcpServers": {
    "mcp-api-guardian": {
      "args": [
        "-y",
        "mcp-api-guardian"
      ],
      "command": "npx"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "mcp-api-guardian": {
      "args": [
        "-y",
        "mcp-api-guardian"
      ],
      "command": "npx"
    }
  }
}

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MCP API Guardian — questions

Answers built from our own checks of this server.

Why is there no uptime for MCP API Guardian?

MCP API Guardian runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the npm package mcp-api-guardian was installed 557 times last week.

How do I connect MCP API Guardian?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It runs locally, so the command pulls mcp-api-guardian straight from npm; nothing to host, nothing to sign up for.

How many people use MCP API Guardian?

The npm package mcp-api-guardian was installed 557 times in the last week. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is MCP API Guardian open source?

Yes — it is published under the MIT licence, written in JavaScript and 0 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.