AI agents call get_transcript_tool to retrieve information from YtMCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves existing transcript data from YouTube videos. It performs a query operation that reads publicly available information without modifying, deleting, or executing any operations. The read-only nature of the server and the explicit 'Fetch' verb confirm this is a Read category tool with low severity risk.
From the tool's definition Tool description states 'Fetch time-synced transcript/subtitles' - a retrieval operation with no side effects. Server description emphasizes 'read-only access' and 'content analysis and metadata retrieval'.
Attacks that exploit this kind of access
Fetch time-synced transcript/subtitles for a YouTube video. It is categorised as a Read tool in the YtMCP MCP Server, which means it retrieves data without modifying state.
Register the Yt MCP server in PolicyLayer and add a rule for get_transcript_tool: 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 YtMCP. Nothing to install.
get_transcript_tool 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_transcript_tool 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_transcript_tool. 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_transcript_tool is provided by the Yt MCP server (utkarshchaudhary009/ytmcp). 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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