compose_plan

Generate Composition Plan. Spends ElevenLabs credits.

SERVERElevenlabs SOURCE@aiwerk/mcp-server-elevenlabs

Medium RISK CLASS

Category Write

Parameters 41 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/aiwerk-mcp-server-elevenlabs/compose-plan.md

WHAT IT DOES

What compose_plan does on Elevenlabs

AI agents use compose_plan to create or update resources in Elevenlabs, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Elevenlabs environment.

Parameter	Type	Required	Description
`prompt`	string	Yes	A simple text prompt to compose a plan from.
`model_id`	string	—
`music_length_ms`	number \| null	—
`source_composition_plan`	object	—	An optional composition plan to use as a source for the new composition plan.

Parameters from the server's own tool schema.

RISK

Why compose_plan is rated Medium

An AI agent can call compose_plan faster than any human can review: one bad instruction and it creates or modifies resources in Elevenlabs by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs compose_plan safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Elevenlabs, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For compose_plan, this is the rule to start with:

compose_plan Rate-limited

compose_plan 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "compose_plan": {
      "limits": [
        {
          "counter": "compose_plan_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Elevenlabs, apply this rule, and every compose_plan call is checked against it from then on.

FAQ

Questions about compose_plan

What does the compose_plan tool do? +

Generate Composition Plan. Spends ElevenLabs credits. It is categorised as a Write tool in the Elevenlabs MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

What parameters does compose_plan accept? +

compose_plan accepts 4 parameters: prompt, model_id, music_length_ms, source_composition_plan. Required: prompt. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on compose_plan? +

Register the Elevenlabs MCP server in PolicyLayer and add a rule for compose_plan: 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 Elevenlabs. Nothing to install.

What risk level is compose_plan? +

compose_plan is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit compose_plan? +

Yes. Add a rate_limit block to the compose_plan 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 compose_plan completely? +

Set action: deny in the PolicyLayer policy for compose_plan. 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 compose_plan? +

compose_plan is provided by the Elevenlabs MCP server (@aiwerk/mcp-server-elevenlabs). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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