This record as markdown: /tools/0xchamin-mcptube/discover-videos.md
What discover_videos does on Mcptube Vision
AI agents call discover_videos to retrieve information from Mcptube Vision without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why discover_videos is rated Low
This tool performs a read-only search operation against YouTube to discover and return video results. It has no side effects—it neither creates, modifies, deletes data nor executes code or triggers external state changes. The blast radius of misuse is minimal; an agent querying for videos poses negligible security risk.
From the tool's definition Tool name 'discover_videos' and description 'Search YouTube for videos on a topic' indicate a search/query operation that retrieves data without modifying, deleting, or executing external operations.
Attacks that exploit this kind of access
The rule that runs discover_videos safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Mcptube Vision, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For discover_videos, this is the rule to start with:
discover_videos is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Mcptube Vision, apply this rule, and every discover_videos call is checked against it from then on.
Questions about discover_videos
Search YouTube for videos on a topic. It is categorised as a Read tool in the Mcptube Vision MCP Server, which means it retrieves data without modifying state.
Register the Mcptube Vision MCP server in PolicyLayer and add a rule for discover_videos: 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 Mcptube Vision. Nothing to install.
discover_videos 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 discover_videos 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 discover_videos. 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.
discover_videos is provided by the Mcptube Vision MCP server (0xchamin/mcptube). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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