Low Risk

list_monitored_domains

Returns the full list of domains under continuous SiteGuardian monitoring for the authenticated account. Each entry includes the domain, current security grade (A–F), timestamp of the last completed scan, and a relative dashboard URL. Use this when the user asks what they are monitoring, wants an...

Part of the SiteGuardian server.

list_monitored_domains is read-only, but an agent in a loop can still rack up calls and cost. PolicyLayer caps every call before it runs. Live in minutes.

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AI agents call list_monitored_domains to retrieve information from SiteGuardian without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.

Even though list_monitored_domains only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.

Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "list_monitored_domains": {}
  }
}

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Get this rule live on your own SiteGuardian server in minutes. PolicyLayer enforces it on every call, before it runs.

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These attack patterns abuse exactly the kind of access list_monitored_domains gives an agent. Each links to the full case and the policy that stops it:

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Every attack above starts with a tool call. PolicyLayer checks each one against your policy first, so list_monitored_domains only ever does what you allow.

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Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.

What does the list_monitored_domains tool do? +

Returns the full list of domains under continuous SiteGuardian monitoring for the authenticated account. Each entry includes the domain, current security grade (A–F), timestamp of the last completed scan, and a relative dashboard URL. Use this when the user asks what they are monitoring, wants an inventory summary, or needs to look up a specific domain's exact spelling before calling get_domain_status / get_drift_events / get_fix_recommendations. The list is scoped entirely by the API key — there is no filter parameter to widen or narrow the result. Do NOT use this to enumerate domains the user does not own or monitor — it only returns their own inventory. Do NOT call it to trigger a scan (it does not); use scan_domain for one-off checks. Requires a valid API key.. It is categorised as a Read tool in the SiteGuardian MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_monitored_domains? +

Register the SiteGuardian MCP server in PolicyLayer and add a rule for list_monitored_domains: 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 SiteGuardian. Nothing to install.

What risk level is list_monitored_domains? +

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

Can I rate-limit list_monitored_domains? +

Yes. Add a rate_limit block to the list_monitored_domains 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 list_monitored_domains completely? +

Set action: deny in the PolicyLayer policy for list_monitored_domains. 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 list_monitored_domains? +

list_monitored_domains is provided by the SiteGuardian MCP server (https://mcp.siteguardian.io). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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