Search your shortened URLs by tag (substring) and/or long URL (substring). Returns tag and shortUrl only. At least one of tag or longUrl must be provided. Use this to look up a URL by the purpose note you set at creation time, or by a known fragment of the destination URL. Prefer this over list_u...
AI agents call search_urls to retrieve information from Url Shortener without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The search_urls tool performs a read-only query operation that retrieves matching shortened URLs based on search criteria. It returns data (tag and shortUrl) without creating, modifying, deleting, executing code, or causing any other side effects. This is a classic Read category tool - a safe information retrieval operation.
From the tool's definition Tool description states it 'Search your shortened URLs by tag (substring) and/or long URL (substring). Returns tag and shortUrl only.' The operation is purely retrieving and querying existing data with no modification or side effects.
Attacks that exploit this kind of access
Search your shortened URLs by tag (substring) and/or long URL (substring). Returns tag and shortUrl only. At least one of tag or longUrl must be provided. Use this to look up a URL by the purpose note you set at creation time, or by a known fragment of the destination URL. Prefer this over list_urls when you know what you. It is categorised as a Read tool in the Url Shortener MCP Server, which means it retrieves data without modifying state.
Register the Url Shortener MCP server in PolicyLayer and add a rule for search_urls: 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 Url Shortener. Nothing to install.
search_urls 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 search_urls 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 search_urls. 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.
search_urls is provided by the Url Shortener MCP server (michaelshumshum/url-shortener-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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