create_account_holder · ntropy-mcp MCP Server MCP

WHAT IT DOES

What create_account_holder does on ntropy-mcp MCP Server

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

WHY IT NEEDS A POLICY

Why create_account_holder needs a policy

This tool creates new records in a banking system. Creation of account holder data is a Write operation (reversible via delete_account_holder). Severity is medium rather than high because account holder creation alone does not directly move money or access sensitive transactions (separate tools handle enrichment/transaction operations), though it does create financial identity records that could enable downstream…

From the tool's definition Tool is named 'create_account_holder' and sibling tools include 'delete_account_holder', 'update_account_holder', and 'get_account_holder', establishing this as a data creation operation within a banking data enrichment system.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_account_holder Rate-limited

create_account_holder 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_holder": {
      "limits": [
        {
          "counter": "create_account_holder_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 ntropy-mcp MCP Server, so you can run agents against it safely.

FAQ

Questions about create_account_holder

What does the create_account_holder tool do? +

create_account_holder. It is categorised as a Write tool in the ntropy-mcp 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_account_holder? +

Register the ntropy-mcp MCP Server MCP server in PolicyLayer and add a rule for create_account_holder: 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 ntropy-mcp MCP Server. Nothing to install.

What risk level is create_account_holder? +

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

Can I rate-limit create_account_holder? +

Yes. Add a rate_limit block to the create_account_holder 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_holder completely? +

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

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