urlhaus_lookup_url
Check if a URL is listed as a malware distribution site in the URLhaus database.
This record as markdown: /tools/io-github-malamutemayhem-unclick-mcp-server/urlhaus-lookup-url.md
What urlhaus_lookup_url does on UnClick
AI agents call urlhaus_lookup_url 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 |
|---|---|---|---|
url | string | Yes | The URL to look up |
Parameters from the server's own tool schema.
Why urlhaus_lookup_url is rated Low
This tool retrieves information from an external database (URLhaus) to check the reputation of a URL. It is purely informational—it queries existing data and returns results without creating, modifying, deleting, or executing any operations. The action is defensive security research with no side effects on the caller's systems or data.
From the tool's definition Tool name and description indicate a lookup/query operation: 'urlhaus_lookup_url' and 'Check if a URL is listed...' performs a read-only database query with no modifications or side effects.
Risk signalsAccepts URL/endpoint input (url)
Attacks that exploit this kind of access
The rule that runs urlhaus_lookup_url 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 urlhaus_lookup_url, this is the rule to start with:
urlhaus_lookup_url 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 urlhaus_lookup_url call is checked against it from then on.
Questions about urlhaus_lookup_url
Check if a URL is listed as a malware distribution site in the URLhaus database. It is categorised as a Read tool in the UnClick MCP Server, which means it retrieves data without modifying state.
urlhaus_lookup_url accepts 1 parameter: url. Required: url. 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 urlhaus_lookup_url: 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.
urlhaus_lookup_url 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 urlhaus_lookup_url 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 urlhaus_lookup_url. 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.
urlhaus_lookup_url 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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