farmbot_add_farm_event · Farmbot Agent MCP: Risk & Policy

WHAT IT DOES

What farmbot_add_farm_event does on Farmbot Agent

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

WHY IT NEEDS A POLICY

Why farmbot_add_farm_event needs a policy

This tool creates and schedules new farm events, which modifies the FarmBot's operational configuration. While the action is reversible (events can be deleted or modified), it has side effects because scheduled sequences can trigger hardware operations (gantry movement, watering, etc.) at specified times.

From the tool's definition Tool description explicitly states 'Create a new scheduled farm event' and 'Schedules a sequence to run at a specific time'. The word 'Create' and 'Schedules' indicate data creation and modification that is reversible.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

farmbot_add_farm_event Rate-limited

farmbot_add_farm_event 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": {
    "farmbot_add_farm_event": {
      "limits": [
        {
          "counter": "farmbot_add_farm_event_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 Farmbot Agent, so you can run agents against it safely.

FAQ

Questions about farmbot_add_farm_event

What does the farmbot_add_farm_event tool do? +

Create a new scheduled farm event. Schedules a sequence to run at a specific time, optionally repeating on an interval. Use farmbot_list_sequences first to find the sequence ID. It is categorised as a Write tool in the Farmbot Agent MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on farmbot_add_farm_event? +

Register the Farmbot Agent MCP server in PolicyLayer and add a rule for farmbot_add_farm_event: 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 Farmbot Agent. Nothing to install.

What risk level is farmbot_add_farm_event? +

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

Can I rate-limit farmbot_add_farm_event? +

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

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

farmbot_add_farm_event is provided by the Farmbot Agent MCP server (kieranklaassen/farmbot-agent-cli-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.