openbci_trigger · Openbci MCP: Risk & Policy

WHAT IT DOES

What openbci_trigger does on Openbci

AI agents invoke openbci_trigger to trigger actions in Openbci. 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.

WHY IT NEEDS A POLICY

Why openbci_trigger needs a policy

A 'trigger' on hardware typically initiates real-time operations or state changes on the device. While not destructive or financial, triggering external hardware operations (e.g., stimulus delivery, recording start, electrode stimulation) has effects dependent on arguments and timing, fitting the Execute category.

From the tool's definition Tool name 'openbci_trigger' suggests it initiates or fires an action on OpenBCI hardware. The description is empty, limiting direct evidence.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

openbci_trigger Rate-limited

openbci_trigger 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "openbci_trigger": {
      "limits": [
        {
          "counter": "openbci_trigger_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Openbci, so you can run agents against it safely.

FAQ

Questions about openbci_trigger

What does the openbci_trigger tool do? +

openbci_trigger. It is categorised as a Execute tool in the Openbci MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on openbci_trigger? +

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

What risk level is openbci_trigger? +

openbci_trigger is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit openbci_trigger? +

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

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

openbci_trigger is provided by the Openbci MCP server (sandraschi/openbci-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.