Search for YouTube videos using the YouTube Data API v3
AI agents call search_youtube to retrieve information from YouTube Tools MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries the YouTube Data API v3 to retrieve video search results. It has no side effects—it only returns information and does not create, modify, delete, or execute any operations. This is a classic Read operation with minimal risk.
From the tool's definition Tool performs 'Search for YouTube videos' with no modification capability. The server description confirms it 'search[es] YouTube videos' as a retrieval operation. No data creation, deletion, execution, or financial operations are involved.
Attacks that exploit this kind of access
Search for YouTube videos using the YouTube Data API v3. It is categorised as a Read tool in the YouTube Tools MCP Server MCP Server, which means it retrieves data without modifying state.
Register the YouTube Tools MCP Server MCP server in PolicyLayer and add a rule for search_youtube: 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 YouTube Tools MCP Server. Nothing to install.
search_youtube 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_youtube 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_youtube. 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_youtube is provided by the YouTube Tools MCP Server MCP server (n3s-online/youtube-tools-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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