AI agents call get_info 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 queries publicly available YouTube video information and returns metadata only. It has no side effects, does not modify any data, execute code, or trigger external operations beyond retrieving information. The lightweight nature ('Cheap probe') and sibling tools (get_segment, get_transcript, search_transcript) that are also read-only confirm the read-only classification.
From the tool's definition Tool retrieves video metadata ('title, duration, chapters, caption availability') with no indication of modification, deletion, or execution. Description uses 'probe' and 'get' language typical of read operations.
Attacks that exploit this kind of access
Cheap probe of a YouTube video: title, duration, chapters, caption availability. 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 get_info: 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.
get_info 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_info 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_info. 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_info is provided by the Youtube MCP server (knowledge-forest/youtube-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
get_info is one line of Youtube's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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