Inserts B-roll clips into a main video as overlays.
AI agents use add_b_roll 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.
This tool modifies video content by inserting overlay elements, placing it in the Write category rather than Execute or Destructive. The severity is medium because misuse could result in unwanted video alterations or corrupted output files, but the operation is non-destructive and reversible.
From the tool's definition Tool name: 'add_b_roll'. Description states it 'Inserts B-roll clips into a main video as overlays,' which creates or modifies video content.
Documented attack patterns abuse exactly the kind of access add_b_roll 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_b_roll:
{
"version": "1",
"default": "deny",
"tools": {
"add_b_roll": {
"limits": [
{
"counter": "add_b_roll_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}add_b_roll 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.
Inserts B-roll clips into a main video as overlays. 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_b_roll: 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_b_roll 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_b_roll 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_b_roll. 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_b_roll 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.
Free to start. No card required.
27 Video & Audio Editing MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.