update_driver · FleetMind MCP Server MCP: Risk & Policy

WHAT IT DOES

What update_driver does on FleetMind MCP Server

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

WHY IT NEEDS A POLICY

Why update_driver needs a policy

The 'update_driver' tool modifies existing driver data, which is a reversible write operation. Severity is high because driver updates in a dispatch system could affect operational decisions (route assignments, availability status, contact info), impacting service delivery and safety.

From the tool's definition Tool name 'update_driver' indicates modification of driver records. Description is empty, providing no detail on scope or constraints. Context shows this is part of a fleet management system where drivers are entities managed alongside orders and assignments.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_driver Rate-limited

update_driver 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_driver": {
      "limits": [
        {
          "counter": "update_driver_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 FleetMind MCP Server, so you can run agents against it safely.

FAQ

Questions about update_driver

What does the update_driver tool do? +

update_driver. It is categorised as a Write tool in the FleetMind 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 update_driver? +

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

What risk level is update_driver? +

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

Can I rate-limit update_driver? +

Yes. Add a rate_limit block to the update_driver 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_driver completely? +

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

update_driver is provided by the FleetMind MCP Server MCP server (mashrur-rahman-fahim/fleetmind-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.