paybot_register · PayBot MCP Server MCP: Risk & Policy

WHAT IT DOES

What paybot_register does on PayBot MCP Server

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

WHY IT NEEDS A POLICY

Why paybot_register needs a policy

This tool creates new entities (bot registrations) with assigned trust levels in a payment infrastructure, making it a Write operation rather than Read (which would only query existing data). It is not Destructive because registration can theoretically be reversed or revoked.

From the tool's definition Tool name 'paybot_register' creates a new bot account with assigned trust level in the PayBot payment infrastructure.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

paybot_register Rate-limited

paybot_register 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": {
    "paybot_register": {
      "limits": [
        {
          "counter": "paybot_register_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 PayBot MCP Server, so you can run agents against it safely.

FAQ

Questions about paybot_register

What does the paybot_register tool do? +

Register a new bot with the PayBot facilitator. Returns the assigned trust level. Supports an optional idempotency key for safe re-issue. It is categorised as a Write tool in the PayBot 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 paybot_register? +

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

What risk level is paybot_register? +

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

Can I rate-limit paybot_register? +

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

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

paybot_register is provided by the PayBot MCP Server MCP server (rbkunnela/paybot-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.