create_retell_llm · RetellAI MCP Server MCP: Risk & Policy

WHAT IT DOES

What create_retell_llm does on RetellAI MCP Server

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

WHY IT NEEDS A POLICY

Why create_retell_llm needs a policy

The tool creates a new Retell LLM resource, which is a reversible modification of system state (the LLM can be deleted via delete_retell_llm sibling tool). This does not execute arbitrary code or delete data irreversibly.

From the tool's definition Tool name 'create_retell_llm' and description 'Creates a new Retell LLM' indicate data creation. This is a Write operation as it creates a new entity (LLM configuration) reversibly.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_retell_llm Rate-limited

create_retell_llm 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": {
    "create_retell_llm": {
      "limits": [
        {
          "counter": "create_retell_llm_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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Instant setup, no code required.

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

FAQ

Questions about create_retell_llm

What does the create_retell_llm tool do? +

Creates a new Retell LLM. It is categorised as a Write tool in the RetellAI MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_retell_llm? +

Register the RetellAI MCP Server MCP server in PolicyLayer and add a rule for create_retell_llm: 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 RetellAI MCP Server. Nothing to install.

What risk level is create_retell_llm? +

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

Can I rate-limit create_retell_llm? +

Yes. Add a rate_limit block to the create_retell_llm 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_retell_llm completely? +

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

create_retell_llm is provided by the RetellAI MCP Server MCP server (kuba2290/abhaybabbar_retellai-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.