event_list

THE RISK

Low Risk

Why event_list needs a policy

This tool retrieves and queries historical coordination data without creating, modifying, deleting, or executing any operations. It has minimal blast radius as an agent could only misuse it by reading sensitive event logs, but the data returned is descriptive metadata about past agent actions rather than credentials or critical system state. Classified as Read with low severity.

From the tool's definition Tool description states "List recent orchestration events" - a retrieval operation with no modification or side effects. The verb "list" and phrase "useful for debugging" indicate read-only access to historical event logs.

Documented attack patterns abuse exactly the kind of access event_list gives an agent:

POLICY

How to control event_list

PolicyLayer is an MCP gateway — it sits between your AI agents and Agent Orchestration, and nothing reaches the server without passing your rules. This is the rule we recommend for event_list:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "event_list": {}
  }
}

event_list is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Agent Orchestration — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

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EXPLORE

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about event_list

What does the event_list tool do? +

List recent orchestration events (who did what, when). Useful for debugging coordination. It is categorised as a Read tool in the Agent Orchestration MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on event_list? +

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

What risk level is event_list? +

event_list is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit event_list? +

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

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

event_list is provided by the Agent Orchestration MCP server (madebyaris/agent-orchestration). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Agent Orchestration tool call.

Start from Agent Orchestration, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →