bulk_create_accounts · FixPayment MCP: Risk & Policy

WHAT IT DOES

What bulk_create_accounts does on FixPayment

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

WHY IT NEEDS A POLICY

Why bulk_create_accounts needs a policy

This tool creates new accounts, which is a write operation that modifies data state. While account creation is theoretically reversible (accounts could be deleted), the bulk nature (up to 500 accounts in one call) and the financial context (FixPayment creditor accounts) mean misuse could create significant operational chaos and administrative burden.

From the tool's definition Tool name 'bulk_create_accounts' and description 'Bulk-create up to 500 accounts for this creditor in one call' indicate irreversible creation of multiple account records at scale.

Risk signalsBulk/mass operation — affects multiple targets

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

bulk_create_accounts Rate-limited

bulk_create_accounts 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": {
    "bulk_create_accounts": {
      "limits": [
        {
          "counter": "bulk_create_accounts_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches FixPayment, so you can run agents against it safely.

FAQ

Questions about bulk_create_accounts

What does the bulk_create_accounts tool do? +

Bulk-create up to 500 accounts for this creditor in one call. It is categorised as a Write tool in the FixPayment MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on bulk_create_accounts? +

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

What risk level is bulk_create_accounts? +

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

Can I rate-limit bulk_create_accounts? +

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

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

bulk_create_accounts is provided by the FixPayment MCP server (prmail/fixpayment_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.