AI agents invoke controlFan to trigger actions in Chotu Robo Server. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.
Given the server context of Arduino-based robotics controlling physical hardware, 'controlFan' almost certainly actuates a physical fan (motor/relay control). This is an Execute-category action — it triggers an external physical operation. The empty description lowers confidence, but the sibling tools (moveForward, moveServo, buzz, blinkLED) all confirm this server executes physical hardware commands.
From the tool's definition Tool name 'controlFan' on a server that controls physical hardware components (LEDs, motors, servos, sensors) via Arduino/ESP32. Description is empty.
Documented attack patterns abuse exactly the kind of access controlFan gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Chotu Robo Server, and nothing reaches the server without passing your rules. This is the rule we recommend for controlFan:
{
"version": "1",
"default": "deny",
"tools": {
"controlFan": {
"limits": [
{
"counter": "controlfan_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}controlFan stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.
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controlFan. It is categorised as a Execute tool in the Chotu Robo Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Chotu Robo Server MCP server in PolicyLayer and add a rule for controlFan: 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 Chotu Robo Server. Nothing to install.
controlFan is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the controlFan 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.
Set action: deny in the PolicyLayer policy for controlFan. 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.
controlFan is provided by the Chotu Robo Server MCP server (vishalmysore/choturobo). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 15 Chotu Robo Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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15 Chotu Robo Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.