List all available transcript languages for a video from any supported platform.
AI agents call list-transcript-languages to retrieve information from Video Toolkit without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns a list of supported transcript languages—a pure data retrieval operation with no capability to modify data, execute code, delete resources, or trigger external actions. The verb 'list' and the informational nature of the output (language enumeration) clearly place it in the Read category. The blast radius of misuse is minimal.
From the tool's definition Tool name 'list-transcript-languages' and description 'List all available transcript languages for a video' indicate a read-only query operation that retrieves metadata without modifying or executing any side effects.
Attacks that exploit this kind of access
List all available transcript languages for a video from any supported platform. It is categorised as a Read tool in the Video Toolkit MCP Server, which means it retrieves data without modifying state.
Register the Video Toolkit MCP server in PolicyLayer and add a rule for list-transcript-languages: 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 Video Toolkit. Nothing to install.
list-transcript-languages 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-transcript-languages 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-transcript-languages. 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-transcript-languages is provided by the Video Toolkit MCP server (jamesanz/transcript-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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