update_company_phone · CATS MCP Server MCP: Risk & Policy

WHAT IT DOES

What update_company_phone does on CATS MCP Server

AI agents use update_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 update_company_phone needs a policy

The tool updates (modifies) company contact information. This is a Write operation—it changes data but is reversible (the phone number can be updated again). Severity is medium because incorrect phone updates could disrupt business communication but don't cause financial loss or irreversible deletion. Confidence is 0.75 due to the empty description; the inference relies on naming convention and API context.

From the tool's definition Tool name 'update_company_phone' indicates modification of company data. Description is empty, limiting specificity. Sibling tools like 'update_*' and 'attach_*_tags' in the CATS recruiting system suggest this modifies existing records reversibly.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_company_phone Rate-limited

update_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": {
    "update_company_phone": {
      "limits": [
        {
          "counter": "update_company_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 update_company_phone

What does the update_company_phone tool do? +

update_company_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 update_company_phone? +

Register the CATS MCP Server MCP server in PolicyLayer and add a rule for update_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 update_company_phone? +

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

Can I rate-limit update_company_phone? +

Yes. Add a rate_limit block to the update_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 update_company_phone completely? +

Set action: deny in the PolicyLayer policy for update_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 update_company_phone? +

update_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.