create_overdub · Descript Complete MCP: Risk & Policy

WHAT IT DOES

What create_overdub does on Descript Complete

AI agents invoke create_overdub to trigger actions in Descript Complete. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why create_overdub needs a policy

This tool executes an AI voice synthesis operation that replaces or regenerates speech in a project. It modifies existing audio content using AI (Overdub), which is an external AI processing operation with significant effects.

From the tool's definition 'regenerate or replace speech in a project using AI voice' — triggers AI voice synthesis to modify audio content in a project

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_overdub Rate-limited

create_overdub stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "create_overdub": {
      "limits": [
        {
          "counter": "create_overdub_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Descript Complete, so you can run agents against it safely.

FAQ

Questions about create_overdub

What does the create_overdub tool do? +

Use Descript Overdub to regenerate or replace speech in a project using AI voice. Example: create_overdub({ project_id:. It is categorised as a Execute tool in the Descript Complete MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on create_overdub? +

Register the Descript Complete MCP server in PolicyLayer and add a rule for create_overdub: 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 Descript Complete. Nothing to install.

What risk level is create_overdub? +

create_overdub is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit create_overdub? +

Yes. Add a rate_limit block to the create_overdub 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.

How do I block create_overdub completely? +

Set action: deny in the PolicyLayer policy for create_overdub. 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.

What MCP server provides create_overdub? +

create_overdub is provided by the Descript Complete MCP server (josephtandle/descript-complete). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.