create_account · MERX - TRON Resource Exchange MCP

WHAT IT DOES

What create_account does on MERX - TRON Resource Exchange

AI agents use create_account to create or update resources in MERX - TRON Resource Exchange — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your MERX - TRON Resource Exchange environment.

WHY IT NEEDS A POLICY

Why create_account needs a policy

This tool creates persistent platform resources (account, API key) that cannot be trivially undone, but the action is reversible (accounts can be deleted, keys revoked). It modifies platform state but lacks financial obligation or code execution. The 'No auth needed' detail elevates severity from low to medium, as it enables unrestricted account proliferation and potential resource abuse or platform spam.

From the tool's definition Tool description states 'Create a new Merx account, generate an API key, and get deposit info' — creates new account and API key, which are data structures that persist and modify platform state.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_account Rate-limited

create_account 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_account": {
      "limits": [
        {
          "counter": "create_account_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 MERX - TRON Resource Exchange, so you can run agents against it safely.

FAQ

Questions about create_account

What does the create_account tool do? +

Create a new Merx account, generate an API key, and get deposit info. No auth needed. It is categorised as a Write tool in the MERX - TRON Resource Exchange 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_account? +

Register the MERX - TRON Resource Exchange MCP server in PolicyLayer and add a rule for create_account: 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 MERX - TRON Resource Exchange. Nothing to install.

What risk level is create_account? +

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

Can I rate-limit create_account? +

Yes. Add a rate_limit block to the create_account 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_account completely? +

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

create_account is provided by the MERX - TRON Resource Exchange MCP server (Hovsteder/merx-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.