plugin_send_event · Overlord MCP Server MCP: Risk & Policy

WHAT IT DOES

What plugin_send_event does on Overlord MCP Server

AI agents invoke plugin_send_event to trigger actions in Overlord MCP 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.

WHY IT NEEDS A POLICY

Why plugin_send_event needs a policy

The name 'plugin_send_event' strongly implies triggering an event dispatch to a plugin, which constitutes executing an external operation or side-effecting action within a C2 framework context. C2 frameworks are used to control remote clients/agents, so sending events to plugins could trigger remote code execution or other high-impact operations.

From the tool's definition Tool name 'plugin_send_event' on a C2 framework server; description is empty and uninformative.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

plugin_send_event Rate-limited

plugin_send_event 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": {
    "plugin_send_event": {
      "limits": [
        {
          "counter": "plugin_send_event_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 Overlord MCP Server, so you can run agents against it safely.

FAQ

Questions about plugin_send_event

What does the plugin_send_event tool do? +

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

How do I enforce a policy on plugin_send_event? +

Register the Overlord MCP Server MCP server in PolicyLayer and add a rule for plugin_send_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 Overlord MCP Server. Nothing to install.

What risk level is plugin_send_event? +

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

Can I rate-limit plugin_send_event? +

Yes. Add a rate_limit block to the plugin_send_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 plugin_send_event completely? +

Set action: deny in the PolicyLayer policy for plugin_send_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 plugin_send_event? +

plugin_send_event is provided by the Overlord MCP Server MCP server (skeeminator/overlord-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.