list_transcripts
AI agents call list_transcripts to retrieve information from Youtube Context without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves or lists transcript data without modifying, deleting, or executing actions. It has no side effects and presents minimal risk. The empty description reduces confidence slightly, but the context from the server description and sibling tools clearly indicates a read operation for querying video transcript information.
From the tool's definition Tool name 'list_transcripts' and server description indicate retrieval of transcript data. Server is described as providing 'rich context about a YouTube video — its transcript, jump-to-the-moment deep links, metadata' with sibling tools like 'get_transcript'…
Attacks that exploit this kind of access
list_transcripts. It is categorised as a Read tool in the Youtube Context MCP Server, which means it retrieves data without modifying state.
Register the Youtube Context MCP server in PolicyLayer and add a rule for list_transcripts: 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 Context. Nothing to install.
list_transcripts 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 list_transcripts 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 list_transcripts. 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.
list_transcripts is provided by the Youtube Context MCP server (realiti4/youtube-context-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.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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