List available YouTube video categories for a region. Calls videoCategories.list with the given regionCode. The returned category IDs can be used as the categoryId field in youtube_upload_video and youtube_update_video. Args - regionCode (string, optional): ISO 3166-1 alpha-2 region code, default
AI agents call youtube_list_video_categories to retrieve information from Youtube without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only retrieves metadata about available video categories for a given region. It does not create, modify, delete, or execute any operations. It is a straightforward informational query with no capacity to affect any YouTube channel, videos, or user data. The low severity reflects minimal blast radius even if called with arbitrary region codes - the result is simply a list of category IDs and metadata.
From the tool's definition Tool performs 'List available YouTube video categories' and 'Calls videoCategories.list' - a pure query operation that retrieves reference data with no side effects or modifications to user data.
Attacks that exploit this kind of access
List available YouTube video categories for a region. Calls videoCategories.list with the given regionCode. The returned category IDs can be used as the categoryId field in youtube_upload_video and youtube_update_video. Args - regionCode (string, optional): ISO 3166-1 alpha-2 region code, default. It is categorised as a Read tool in the Youtube MCP Server, which means it retrieves data without modifying state.
Register the Youtube MCP server in PolicyLayer and add a rule for youtube_list_video_categories: 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. Nothing to install.
youtube_list_video_categories 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 youtube_list_video_categories 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 youtube_list_video_categories. 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.
youtube_list_video_categories is provided by the Youtube MCP server (tuitamogamer-gpt/youtube-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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