changedetection_get_watch

THE RISK

Low Risk

Why changedetection_get_watch needs a policy

This tool retrieves and returns information about a watch configuration and its last check results. It does not create, modify, delete, or trigger any external operations. It is a simple query operation that returns existing data without making changes to the system state. Read operations typically carry low risk as they do not alter data or trigger unintended effects.

From the tool's definition Tool name 'changedetection_get_watch' and description 'Get full detail on a single watch, including configuration and last-check metadata' indicate a retrieval operation only.

Documented attack patterns abuse exactly the kind of access changedetection_get_watch gives an agent:

POLICY

How to control changedetection_get_watch

PolicyLayer is an MCP gateway — it sits between your AI agents and Crow, and nothing reaches the server without passing your rules. This is the rule we recommend for changedetection_get_watch:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "changedetection_get_watch": {}
  }
}

changedetection_get_watch is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Crow — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

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EXPLORE

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
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FAQ

Questions about changedetection_get_watch

What does the changedetection_get_watch tool do? +

Get full detail on a single watch, including configuration and last-check metadata. It is categorised as a Read tool in the Crow MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on changedetection_get_watch? +

Register the Crow MCP server in PolicyLayer and add a rule for changedetection_get_watch: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Crow. Nothing to install.

What risk level is changedetection_get_watch? +

changedetection_get_watch is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit changedetection_get_watch? +

Yes. Add a rate_limit block to the changedetection_get_watch rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block changedetection_get_watch completely? +

Set action: deny in the PolicyLayer policy for changedetection_get_watch. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides changedetection_get_watch? +

changedetection_get_watch is provided by the Crow MCP server (kh0pper/crow). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Crow tool call.

Start from Crow, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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