addTransaction · Lofty MCP Server MCP: Risk & Policy

WHAT IT DOES

What addTransaction does on Lofty MCP Server

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

WHY IT NEEDS A POLICY

Why addTransaction needs a policy

This tool creates a new transaction record, which is a reversible write operation. While it involves financial data, the tool itself does not move money or create external financial obligations—it only records transaction information within the CRM.

From the tool's definition Tool name 'addTransaction' combined with description 'Add a new transaction to a lead' indicates creation of a new financial record within the CRM system.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

addTransaction Rate-limited

addTransaction 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": {
    "addTransaction": {
      "limits": [
        {
          "counter": "addtransaction_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 Lofty MCP Server, so you can run agents against it safely.

FAQ

Questions about addTransaction

What does the addTransaction tool do? +

Add a new transaction to a lead. It is categorised as a Write tool in the Lofty 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 addTransaction? +

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

What risk level is addTransaction? +

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

Can I rate-limit addTransaction? +

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

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

addTransaction is provided by the Lofty MCP Server MCP server (nerdsnipe-inc/lofty-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.