get_frame
Extract a frame from a video at a specific timestamp.
This record as markdown: /tools/0xchamin-mcptube/get-frame.md
What get_frame does on Mcptube Vision
AI agents call get_frame 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 get_frame is rated Low
The tool retrieves a single frame from an already-processed video without creating, modifying, deleting, or executing any operations. It is purely informational and read-only in nature. Blast radius is minimal since misuse would only expose or retrieve existing video frame data already known to the system.
From the tool's definition Tool description states 'Extract a frame from a video at a specific timestamp' — this is a retrieval operation with no modification or deletion of data. The verb 'extract' indicates reading/fetching existing video frame data.
Attacks that exploit this kind of access
The rule that runs get_frame 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 get_frame, this is the rule to start with:
get_frame 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 get_frame call is checked against it from then on.
Questions about get_frame
Extract a frame from a video at a specific timestamp. 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 get_frame: 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.
get_frame 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_frame 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_frame. 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_frame 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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