retell_create_chat · Retell AI MCP Server MCP: Risk & Policy

WHAT IT DOES

What retell_create_chat does on Retell AI MCP Server

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

WHY IT NEEDS A POLICY

Why retell_create_chat needs a policy

This tool creates a new chat session, which is a reversible write operation. It adds a new record to the system without permanently deleting or modifying existing data. The severity is medium because creating chat sessions could potentially be abused to spam sessions or consume resources, but the operation is reversible and doesn't directly expose sensitive data or execute arbitrary code.

From the tool's definition The tool is named 'retell_create_chat' and described as 'Create a new chat session with a chat agent.' The verb 'create' indicates a write operation that generates a new resource (a chat session).

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

retell_create_chat Rate-limited

retell_create_chat 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": {
    "retell_create_chat": {
      "limits": [
        {
          "counter": "retell_create_chat_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about retell_create_chat

What does the retell_create_chat tool do? +

Create a new chat session with a chat agent. It is categorised as a Write tool in the Retell AI 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 retell_create_chat? +

Register the Retell AI MCP Server MCP server in PolicyLayer and add a rule for retell_create_chat: 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 Retell AI MCP Server. Nothing to install.

What risk level is retell_create_chat? +

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

Can I rate-limit retell_create_chat? +

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

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

retell_create_chat is provided by the Retell AI MCP Server MCP server (itsanamune/retellsimp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.