Get the keyword(s) for a long URL
AI agents call get_url_keyword to retrieve information from YOURLS-MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries YOURLS data to retrieve keyword metadata associated with a URL. It performs a read-only lookup without creating, modifying, deleting, or executing any operations. The minimal blast radius—an attacker could only discover existing keyword mappings—justifies low severity.
From the tool's definition Tool name 'get_url_keyword' and description 'Get the keyword(s) for a long URL' indicate a retrieval operation with no modification or side effects.
Attacks that exploit this kind of access
Get the keyword(s) for a long URL. It is categorised as a Read tool in the YOURLS-MCP MCP Server, which means it retrieves data without modifying state.
Register the YOURLS- MCP server in PolicyLayer and add a rule for get_url_keyword: 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 YOURLS-MCP. Nothing to install.
get_url_keyword 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 get_url_keyword 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 get_url_keyword. 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.
get_url_keyword is provided by the YOURLS- MCP server (kesslerio/yourls-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.
Teams ship this data inside their own products. See what a licence covers →