createCall · Follow Up Boss MCP Server MCP: Risk & Policy

WHAT IT DOES

What createCall does on Follow Up Boss MCP Server

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

WHY IT NEEDS A POLICY

Why createCall needs a policy

This tool creates a new call record in Follow Up Boss CRM, modifying the CRM state by adding data. It is reversible (the call log can be deleted or corrected later), so it is Write rather than Destructive. The severity is medium because creating call records affects business data integrity and audit trails, but the impact is localized to a single call entry and not immediately destructive.

From the tool's definition createCall logs a call for a person, creating a new record (call log) in the CRM system. The description specifies parameters (isIncoming, note) used to record call details, which is a create/write operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

createCall Rate-limited

createCall 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": {
    "createCall": {
      "limits": [
        {
          "counter": "createcall_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 Follow Up Boss MCP Server, so you can run agents against it safely.

FAQ

Questions about createCall

What does the createCall tool do? +

Log a call for a person. FUB expects isIncoming (boolean) and note (singular). It is categorised as a Write tool in the Follow Up Boss 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 createCall? +

Register the Follow Up Boss MCP Server MCP server in PolicyLayer and add a rule for createCall: 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 Follow Up Boss MCP Server. Nothing to install.

What risk level is createCall? +

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

Can I rate-limit createCall? +

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

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

createCall is provided by the Follow Up Boss MCP Server MCP server (nerdsnipe-inc/follow-up-boss-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.