AI agents use add_subtitles to create or update resources in Video & Audio Editing MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Video & Audio Editing MCP Server environment.
Adding subtitles to video is a reversible write operation that creates or modifies video metadata/content without destructively removing data. While the empty description reduces confidence, the naming pattern and server context (professional video editing via FFmpeg) clearly indicate a media modification tool.
From the tool's definition Tool named 'add_subtitles' with empty description on a video editing server. Based on sibling tools (add_text_overlay, add_image_overlay, add_b_roll, add_basic_transitions) all performing non-destructive media modifications, this tool modifies video files by…
Documented attack patterns abuse exactly the kind of access add_subtitles gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Video & Audio Editing MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for add_subtitles:
{
"version": "1",
"default": "deny",
"tools": {
"add_subtitles": {
"limits": [
{
"counter": "add_subtitles_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}add_subtitles 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.
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add_subtitles. It is categorised as a Write tool in the Video & Audio Editing MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Video & Audio Editing MCP Server MCP server in PolicyLayer and add a rule for add_subtitles: 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 & Audio Editing MCP Server. Nothing to install.
add_subtitles 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 add_subtitles 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 add_subtitles. 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.
add_subtitles is provided by the Video & Audio Editing MCP Server MCP server (misbahsy/video-audio-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Video & Audio Editing MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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27 Video & Audio Editing MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.