retell_create_knowledge_base · Retell AI MCP Server MCP

WHAT IT DOES

What retell_create_knowledge_base does on Retell AI MCP Server

AI agents use retell_create_knowledge_base 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_knowledge_base needs a policy

The tool creates a new knowledge base, which is a persistent data structure. This is a reversible Write operation (the knowledge base can be modified or deleted later). It has medium severity because misconfiguration or malicious knowledge bases could mislead AI agents into providing incorrect or harmful information, but the action itself is not irreversible (Destructive), does not execute arbitrary code (Execute),…

From the tool's definition Tool name contains 'create' and description states 'Create a new knowledge base' — this creates a new data structure that is stored and can be referenced by agents.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

retell_create_knowledge_base Rate-limited

retell_create_knowledge_base 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_knowledge_base": {
      "limits": [
        {
          "counter": "retell_create_knowledge_base_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_knowledge_base

What does the retell_create_knowledge_base tool do? +

Create a new knowledge base for providing context to agents. 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_knowledge_base? +

Register the Retell AI MCP Server MCP server in PolicyLayer and add a rule for retell_create_knowledge_base: 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_knowledge_base? +

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

Can I rate-limit retell_create_knowledge_base? +

Yes. Add a rate_limit block to the retell_create_knowledge_base 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_knowledge_base completely? +

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

retell_create_knowledge_base 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.