MCP Server Change and Health Monitor

MCP Server Change and Health Monitor MCP Server

An MCP server for the Mamba Labs MCP Server Change and Health Monitor actor on Apify. Check any list of MCP servers and get one row per server: did it answer, what it exposes, and what changed.

What's Inside

• What it does
• Quick start
• Prerequisites
• Example prompts
• Tool
• Inputs
• Pricing
• Full actor documentation
• License

What it does

Give it MCP server URLs, npm packages, or a search of the official MCP Registry. It speaks the MCP protocol to each server and returns whether the server answered, how fast, the tools it exposes now, and what changed since the last run. Changes are marked breaking, warning, or info.

All of the work runs on Apify. This package is a thin client that starts the actor run, waits for it, and hands back the dataset rows.

Quick start

You need Node.js 18 or newer and an Apify account with an API token.

Add this to your Claude Desktop config (claude_desktop_config.json), Cursor, or any MCP client:

{
  "mcpServers": {
    "mamba-mcp-server-change-health-monitor": {
      "command": "npx",
      "args": [
        "-y",
        "@mambalabsdev/mcp-server-change-health-monitor"
      ],
      "env": {
        "APIFY_TOKEN": "your-apify-token"
      }
    }
  }
}

Restart the client. The check_mcp_servers tool appears.

Prerequisites

• Node.js 18 or newer.
• An Apify API token from console.apify.com/account/integrations, set as APIFY_TOKEN. The server lists its tool without a token; a call needs one.

Example prompts

• "Are these three MCP servers up, and did any of their tools change since last week?"
• "Check every server in the official MCP Registry that matches github and list which ones answer."
• "Did the tool descriptions on this MCP server change since my last check?"

Tool

check_mcp_servers. One tool. Example arguments:

{
  "server_urls": [
    "https://mcp.deepwiki.com/mcp"
  ]
}

Inputs

Every buyer facing input of the actor. Omitted inputs take the actor's own defaults.

Input	Type	Required	Description
server_urls	array	no	HTTP endpoints of MCP servers. Streamable HTTP is tried first, then the older HTTP plus SSE transport.
npm_packages	array	no	npm package names, optionally with a version, such as @modelcontextprotocol/server-everything. Each is installed and started inside your run. The code in a package you list runs in your run, so list only packages you trust. No environment variables are passed to it.
registry_search	array	no	Search terms for the official MCP Registry. The HTTP endpoints of matching servers are checked. Packages found this way are listed but never run, because running code picked by a keyword is not safe.
max_servers	number	no	Most servers to check per registry search term, up to 200. Default 25.
snapshot_key	string	no	Name of the memory that holds the last run's results, so a scheduled run finds changes on its own. Use a different name per list. Default default.
previous_snapshot	string	no	Optional. The JSON of a SNAPSHOT record from an earlier run, or an https link to that record. It takes the place of the saved snapshot for this run.
timeout_seconds	number	no	How long one request to a server may take before it counts as no answer, 3 to 60. Default 20. A package gets 60 more seconds to install.
include_resources_prompts	boolean	no	Also list the server's resources and prompts and report what changed in them. Default true.
auth_headers	string	no	Optional, for servers you are allowed to check. JSON keyed by site, for example {"https://mcp.example.com":{"Authorization":"Bearer abc"}}. Each header goes only to its own site. Encrypted by Apify, never logged, never saved in a snapshot.
max_charge_usd	string	no	Optional. The run stops before a charge that would pass this amount. Free rows are always returned.

Pricing

Pay per event on Apify, billed to your Apify account. Prices in USD.

Event	Free plan	Bronze	Silver	Gold
server-check, one MCP server checked	$0.005	$0.00475	$0.0045	$0.00425
package-check, one npm package installed and checked	$0.02	$0.019	$0.018	$0.017
apify-actor-start, per run start	$0.002	$0.002	$0.002	$0.002

Servers that need credentials or refused the request, invalid entries, registry rows, and refused input are free. Mamba Labs pays the platform costs of the run, Apify proxy traffic included.

Full actor documentation

apify.com/mambalabs/mcp-server-change-health-monitor

License

MIT. See LICENSE.