retell_add_knowledge_base_sources · Retell AI MCP Server MCP

WHAT IT DOES

What retell_add_knowledge_base_sources does on Retell AI MCP Server

AI agents use retell_add_knowledge_base_sources 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_add_knowledge_base_sources needs a policy

This tool creates or modifies knowledge base entries by ingesting new documentation sources. It does not execute arbitrary code, delete data, or move money. While the added sources could theoretically influence downstream AI agent behavior or responses, the tool itself performs a straightforward write operation (adding/storing data).

From the tool's definition Tool description states 'Add documentation sources (URLs or text) to a knowledge base' — the verb 'add' indicates creation/modification of data within the knowledge base, a reversible operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

retell_add_knowledge_base_sources Rate-limited

retell_add_knowledge_base_sources 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_add_knowledge_base_sources": {
      "limits": [
        {
          "counter": "retell_add_knowledge_base_sources_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_add_knowledge_base_sources

What does the retell_add_knowledge_base_sources tool do? +

Add documentation sources (URLs or text) to a knowledge base. 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_add_knowledge_base_sources? +

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

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

Can I rate-limit retell_add_knowledge_base_sources? +

Yes. Add a rate_limit block to the retell_add_knowledge_base_sources 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_add_knowledge_base_sources completely? +

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

retell_add_knowledge_base_sources 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.