update_billing_item · Filevine MCP: Risk & Policy

WHAT IT DOES

What update_billing_item does on Filevine

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

WHY IT NEEDS A POLICY

Why update_billing_item needs a policy

This tool modifies billing information, which is financial data but does not directly move money or create financial obligations—those would fall under Financial category (e.g., approve_invoice on the same server). Update_billing_item changes billing record attributes reversibly, fitting Write category.

From the tool's definition Tool name 'update_billing_item' and description 'Update a billing item on a project' indicate modification of billing records. The 'update' verb combined with 'billing_item' context shows this creates or modifies billing data reversibly.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_billing_item Rate-limited

update_billing_item 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": {
    "update_billing_item": {
      "limits": [
        {
          "counter": "update_billing_item_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 Filevine, so you can run agents against it safely.

FAQ

Questions about update_billing_item

What does the update_billing_item tool do? +

Update a billing item on a project. It is categorised as a Write tool in the Filevine MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on update_billing_item? +

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

What risk level is update_billing_item? +

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

Can I rate-limit update_billing_item? +

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

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

update_billing_item is provided by the Filevine MCP server (rosenadvertising/filevine-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.