Get captions/subtitles for a specific video
AI agents call get-video-captions to retrieve information from YouTube Video Summarizer MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves captions and subtitles from YouTube videos—purely informational data that already exists. There are no side effects, no data modification, and no irreversible actions. The blast radius of misuse is minimal; an agent could retrieve captions from videos it shouldn't have access to (privacy/confidentiality concern), but this is a read-level risk.
From the tool's definition Tool name 'get-video-captions' and description 'Get captions/subtitles for a specific video' indicate retrieval of existing data with no modification, deletion, or execution of code.
Documented attack patterns abuse exactly the kind of access get-video-captions gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and YouTube Video Summarizer MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get-video-captions:
{
"version": "1",
"default": "deny",
"tools": {
"get-video-captions": {}
}
}get-video-captions is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get captions/subtitles for a specific video. It is categorised as a Read tool in the YouTube Video Summarizer MCP Server MCP Server, which means it retrieves data without modifying state.
Register the YouTube Video Summarizer MCP Server MCP server in PolicyLayer and add a rule for get-video-captions: 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 Video Summarizer MCP Server. Nothing to install.
get-video-captions 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-video-captions 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-video-captions. 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-video-captions is provided by the YouTube Video Summarizer MCP Server MCP server (nabid-pf/youtube-video-summarizer-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from YouTube Video Summarizer MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
3 YouTube Video Summarizer MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.