Extract and download audio from video in best quality. This tool extracts audio tracks from video content and saves them as audio files (typically M4A or MP3 format). Files are saved to ~/Downloads by default. Args: - url (string): Full video URL from any supported platform Returns: Success messa...
AI agents use ytdlp_download_audio to create or update resources in YouTube MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your YouTube MCP Server environment.
This tool downloads and saves audio files to the local filesystem. It creates new files on disk, which is a Write operation. It does not execute code, delete data, or involve financial transactions. The blast radius is medium — it writes potentially large files to the user's system but is reversible (files can be deleted).
From the tool's definition Extract and download audio from video in best quality. Files are saved to ~/Downloads by default.
Documented attack patterns abuse exactly the kind of access ytdlp_download_audio gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and YouTube MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for ytdlp_download_audio:
{
"version": "1",
"default": "deny",
"tools": {
"ytdlp_download_audio": {
"limits": [
{
"counter": "ytdlp_download_audio_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}ytdlp_download_audio stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Extract and download audio from video in best quality. This tool extracts audio tracks from video content and saves them as audio files (typically M4A or MP3 format). Files are saved to ~/Downloads by default. Args: - url (string): Full video URL from any supported platform Returns: Success message with: - Downloaded audio filename - Destination folder path - Audio format (m4a/mp3) Use when: User wants audio-only file (music, podcasts, speeches) Don. It is categorised as a Write tool in the YouTube MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the YouTube MCP Server MCP server in PolicyLayer and add a rule for ytdlp_download_audio: 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 MCP Server. Nothing to install.
ytdlp_download_audio is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the ytdlp_download_audio 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 ytdlp_download_audio. 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.
ytdlp_download_audio is provided by the YouTube MCP Server MCP server (kevinwatt/yt-dlp-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from YouTube 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.
10 YouTube MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.