wave_create_customer · Waveapps MCP: Risk & Policy

WHAT IT DOES

What wave_create_customer does on Waveapps

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

WHY IT NEEDS A POLICY

Why wave_create_customer needs a policy

This tool creates new customer records in an accounting system, which is reversible (customers can be deleted via wave_delete_customer). While it modifies financial data structures, it does not directly move money, execute arbitrary code, or irreversibly destroy data.

From the tool's definition Tool name 'wave_create_customer' and description 'Creates a new customer in Wave' explicitly indicates data creation. The server context shows financial bookkeeping operations where customer records are fundamental to invoicing and payment workflows.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

wave_create_customer Rate-limited

wave_create_customer 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": {
    "wave_create_customer": {
      "limits": [
        {
          "counter": "wave_create_customer_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 Waveapps, so you can run agents against it safely.

FAQ

Questions about wave_create_customer

What does the wave_create_customer tool do? +

Creates a new customer in Wave. Only. It is categorised as a Write tool in the Waveapps MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on wave_create_customer? +

Register the Waveapps MCP server in PolicyLayer and add a rule for wave_create_customer: 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 Waveapps. Nothing to install.

What risk level is wave_create_customer? +

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

Can I rate-limit wave_create_customer? +

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

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

wave_create_customer is provided by the Waveapps MCP server (lunaparker/waveapps-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.