create_company_phone · CATS MCP Server MCP: Risk & Policy

WHAT IT DOES

What create_company_phone does on CATS MCP Server

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

WHY IT NEEDS A POLICY

Why create_company_phone needs a policy

This tool creates or adds new contact information to a company record, which is a reversible write operation. It does not retrieve data (Read), execute arbitrary code (Execute), permanently delete data (Destructive), or move money (Financial). The blast radius is minimal—adding a phone number is a low-impact modification that can be corrected or removed without significant consequences.

From the tool's definition Tool name 'create_company_phone' and description 'Add a phone number for a company' indicate creation of a new data record (phone number) associated with an existing company entity.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_company_phone Rate-limited

create_company_phone 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_company_phone": {
      "limits": [
        {
          "counter": "create_company_phone_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 CATS MCP Server, so you can run agents against it safely.

FAQ

Questions about create_company_phone

What does the create_company_phone tool do? +

Add a phone number for a company. It is categorised as a Write tool in the CATS 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_company_phone? +

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

What risk level is create_company_phone? +

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

Can I rate-limit create_company_phone? +

Yes. Add a rate_limit block to the create_company_phone 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_company_phone completely? +

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

create_company_phone is provided by the CATS MCP Server MCP server (vanman2024/cats-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.