get_frame_by_query
Search a video's transcript and extract a frame at the best matching moment.
This record as markdown: /tools/0xchamin-mcptube/get-frame-by-query.md
What get_frame_by_query does on Mcptube Vision
AI agents call get_frame_by_query 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_by_query is rated Low
This tool retrieves and queries existing data (video transcripts and frames) without side effects. It performs a search and content extraction, which are characteristic Read operations. The blast radius of misuse is minimal—an agent could retrieve unintended video content but cannot modify, delete, or execute arbitrary operations.
From the tool's definition Tool description states it 'search[es] a video's transcript and extract[s] a frame' — both read-only operations. Transcript search queries data; frame extraction retrieves visual content. No modifications, deletions, or external executions.
Attacks that exploit this kind of access
The rule that runs get_frame_by_query 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_by_query, this is the rule to start with:
get_frame_by_query 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_by_query call is checked against it from then on.
Questions about get_frame_by_query
Search a video's transcript and extract a frame at the best matching moment. 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_by_query: 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_by_query 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_by_query 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_by_query. 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_by_query 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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