create_candidate_phone · CATS MCP Server MCP: Risk & Policy

WHAT IT DOES

What create_candidate_phone does on CATS MCP Server

AI agents use create_candidate_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_candidate_phone needs a policy

The tool appears to create or add a phone number entry to a candidate's profile, which is a reversible write operation (the phone number can be updated or removed). It does not execute external code, delete data, move money, or retrieve information.

From the tool's definition Tool name 'create_candidate_phone' indicates creation of phone data for a candidate. No description provided, but the 'create_' prefix and context of a recruiting/ATS system suggests adding or recording phone contact information for a candidate record.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_candidate_phone Rate-limited

create_candidate_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_candidate_phone": {
      "limits": [
        {
          "counter": "create_candidate_phone_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 CATS MCP Server, so you can run agents against it safely.

FAQ

Questions about create_candidate_phone

What does the create_candidate_phone tool do? +

create_candidate_phone. 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_candidate_phone? +

Register the CATS MCP Server MCP server in PolicyLayer and add a rule for create_candidate_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_candidate_phone? +

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

Can I rate-limit create_candidate_phone? +

Yes. Add a rate_limit block to the create_candidate_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_candidate_phone completely? +

Set action: deny in the PolicyLayer policy for create_candidate_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_candidate_phone? +

create_candidate_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.