search_youtube_by_channel
AI agents call search_youtube_by_channel to retrieve information from YouTube Search MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves or queries YouTube data (videos by a specific channel) without side effects. It performs a read-only search operation consistent with the server's stated purpose of 'search functionality'. No destructive, financial, or execution capabilities are evident. Confidence slightly reduced due to empty tool description, but sibling tools and server purpose provide strong contextual evidence.
From the tool's definition Tool name 'search_youtube_by_channel' and sibling tools 'search_youtube', 'search_youtube_channels', 'search_youtube_playlists', 'search_youtube_videos' all indicate retrieval operations.
Attacks that exploit this kind of access
search_youtube_by_channel. It is categorised as a Read tool in the YouTube Search MCP Server MCP Server, which means it retrieves data without modifying state.
Register the YouTube Search MCP Server MCP server in PolicyLayer and add a rule for search_youtube_by_channel: 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 Search MCP Server. Nothing to install.
search_youtube_by_channel 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_by_channel 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_by_channel. 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_by_channel is provided by the YouTube Search MCP Server MCP server (knightmode/youtube-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.
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