isup_check
Check if a website/domain is up or down via isitup.org.
This record as markdown: /tools/io-github-malamutemayhem-unclick-mcp-server/isup-check.md
What isup_check does on UnClick
AI agents call isup_check to retrieve information from UnClick without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
domain | string | Yes | Domain to check (e.g. google.com). |
Parameters from the server's own tool schema.
Why isup_check is rated Low
The tool performs a simple status check (read-only query) against an external monitoring service. It retrieves data about whether a website is accessible but does not create, modify, delete, or execute any operations. This is a non-intrusive information gathering capability with minimal security risk.
From the tool's definition Tool description states 'Check if a website/domain is up or down via isitup.org' - this is a pure query operation that retrieves status information about external services with no side effects or modifications.
Attacks that exploit this kind of access
The rule that runs isup_check safely
PolicyLayer is an MCP gateway: it sits between your AI agents and UnClick, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For isup_check, this is the rule to start with:
isup_check is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect UnClick, apply this rule, and every isup_check call is checked against it from then on.
Questions about isup_check
Check if a website/domain is up or down via isitup.org. It is categorised as a Read tool in the UnClick MCP Server, which means it retrieves data without modifying state.
isup_check accepts 1 parameter: domain. Required: domain. The full parameter table on this page comes from the server's own tool schema.
Register the UnClick MCP server in PolicyLayer and add a rule for isup_check: 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 UnClick. Nothing to install.
isup_check is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the isup_check 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.
Set action: deny in the PolicyLayer policy for isup_check. 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.
isup_check is provided by the UnClick MCP server (@unclick/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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