AI agents call get_watch_url to retrieve information from Yt without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool generates and retrieves a watch URL based on an input video ID. It is a simple lookup/transformation function that does not modify data, execute arbitrary operations, or incur financial/destructive consequences. This is a straightforward Read operation with minimal risk even if misused by an agent.
From the tool's definition Tool 'returns the YouTube watch URL' for a given video ID — a pure data retrieval operation with no side effects, no creation or modification of data, and no execution of code or commands.
Attacks that exploit this kind of access
Returns the YouTube watch URL for a given video ID, optionally starting at a specific time. It is categorised as a Read tool in the Yt MCP Server, which means it retrieves data without modifying state.
Register the Yt MCP server in PolicyLayer and add a rule for get_watch_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 Yt. Nothing to install.
get_watch_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 get_watch_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 get_watch_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.
get_watch_url is provided by the Yt MCP server (kdr/yt-mcp-server). 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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