ChangeDetection.io MCP Server

Name: ChangeDetection.io MCP Server
Author: rusty4444

by rusty4444version 0.1.0i★ –iRuns on your computer

Registry nameio.github.rusty4444/changedetection-mcp

Install

Overview

Description from the maker (original English)

MCP server for ChangeDetection.io website monitoring and change history.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Developer tools
You need to fill in: CHANGEDETECTION_BASE_URL, CHANGEDETECTION_API_KEY

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
You fill in yourself: CHANGEDETECTION_BASE_URL, CHANGEDETECTION_API_KEY

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

PyPIPython’s uv installed (for the uvx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "changedetection": {
      "command": "uvx",
      "args": [
        "changedetection-mcp"
      ],
      "env": {
        "CHANGEDETECTION_BASE_URL": "your-value",
        "CHANGEDETECTION_API_KEY": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add changedetection --env CHANGEDETECTION_BASE_URL=your-value --env CHANGEDETECTION_API_KEY=your-value -- uvx changedetection-mcp

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "changedetection": {
      "command": "uvx",
      "args": [
        "changedetection-mcp"
      ],
      "env": {
        "CHANGEDETECTION_BASE_URL": "your-value",
        "CHANGEDETECTION_API_KEY": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "changedetection": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "changedetection-mcp"
      ],
      "env": {
        "CHANGEDETECTION_BASE_URL": "your-value",
        "CHANGEDETECTION_API_KEY": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

CHANGEDETECTION_BASE_URL required env
Base URL of the ChangeDetection.io instance, e.g. https://changedetection.example.com
CHANGEDETECTION_API_KEY secret required env
ChangeDetection.io API key

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account rusty4444, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Developer toolsi

More stars than 0% of the other 1390 servers in this category
Published to the registry more recently than 21% of the other 1390 servers in this category
Basic checks equal to or better than 100% of the other 1390 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is ChangeDetection.io MCP Server safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: CHANGEDETECTION_BASE_URL, CHANGEDETECTION_API_KEY

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.1.0) reached the registry 6 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Python (uv) on your computer.

What can I use instead?

In the same category: GitHub, Desktop Commander, Cloudflare MCP

Alternatives

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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

ChangeDetection.io MCP Server

An MCP (Model Context Protocol) server that gives AI agents native access to ChangeDetection.io — the open-source website change detection and monitoring platform.

Features

Watch Management — Create, list, update, delete, and trigger rechecks on watches
Change History — Browse snapshot history and get diffs between any two points in time
Per-watch action fuse — get_snapshot_diff arms a configurable limit on follow-up mutating actions for that watch so one noisy page cannot cascade into unlimited rechecks or edits
Tag Management — Organise watches with tags/groups
Search — Full-text search through watches by URL or title
System Info — Quick health and stats readout

Why This Exists

No MCP server existed for ChangeDetection.io despite it being one of the most popular self-hosted tools (31k+ GitHub stars). This server fills that gap, letting AI agents:

"Watch this product page and notify me when it changes"
"Show me all my failed watches"
"What changed on this page yesterday?"
"Set up a watch for this job listing"

Quick Start

Prerequisites

A running ChangeDetection.io instance (self-hosted or SaaS)
An API key from Settings → API

Installation

pip install changedetection-mcp

Configuration

Add to your MCP client config (Claude Desktop, Cursor, Hermes Agent, etc.):

"mcpServers": { "changedetection": { "command": "changedetection-mcp", "env": { "CHANGEDETECTION_BASE_URL": "http://localhost:5000", "CHANGEDETECTION_API_KEY": "your-api-key-here" } } } }

Usage with Hermes Agent

Create ~/.hermes/skills/changedetection/SKILL.md (see skill/ directory) or configure as an MCP server:

hermes mcp add changedetection --command "changedetection-mcp"

hermes config set changedetection.base_url "http://localhost:5000" hermes config set changedetection.api_key "your-api-key"

API Coverage

Tool	Description
`list_watches`	List all watches (optional tag filter, limit/offset)
`get_watch`	Get full details of a single watch
`create_watch`	Create a new watch from a URL
`update_watch`	Update an existing watch (pause, rename, change schedule, etc.)
`delete_watch`	Delete a watch and all its history
`recheck_watch`	Trigger an immediate recheck
`get_watch_history`	List change history snapshots for a watch
`get_snapshot_diff`	Get diff between two snapshots
`search_watches`	Full-text search by URL or title
`list_tags`	List all tags/groups
`create_tag`	Create a tag for organisation
`get_system_info`	Get server stats (watch count, uptime, version)

Safety Fuse: Per-Watch Action Limit

When an agent asks for a page diff, that diff can prompt follow-up actions such as immediate rechecks, watch edits, or deletes. To stop one noisy site from triggering a cascade, get_snapshot_diff arms a per-watch fuse before returning.

By default, each diff allows 3 mutating MCP actions for that watch. The fuse applies to:

recheck_watch
update_watch
delete_watch

After the budget is exhausted, those tools return a clear blocked message instead of calling the ChangeDetection.io API. The fuse is in-process and per watch UUID; watches without an armed fuse are unaffected.

Configuration:

# Default: 3. Set 0 to disable the fuse globally.

export CHANGEDETECTION_MCP_ACTION_LIMIT_PER_WATCH=3

Per call, override the default with the optional action_limit argument on get_snapshot_diff:

get_snapshot_diff(uuid="...", from_timestamp="previous", to_timestamp="latest", action_limit=1)

Use action_limit=0 to disable the fuse for that watch, or call get_snapshot_diff again with a higher value to re-arm it.

Development

git clone https://github.com/rusty4444/changedetection-mcp.git

cd changedetection-mcp uv venv source .venv/bin/activate uv pip install -e ".[dev]"

License

MIT — see LICENSE.

ChangeDetection.io MCP Server

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Developer toolsi

Common questions

Alternatives

GitHub

Desktop Commander

Cloudflare MCP

README from the maker

ChangeDetection.io MCP Server

Features

Why This Exists

Quick Start

Prerequisites

Installation

Configuration

Usage with Hermes Agent

API Coverage

Safety Fuse: Per-Watch Action Limit

Development

License