manage_registration · EventHorizon MCP Server MCP

WHAT IT DOES

What manage_registration does on EventHorizon MCP Server

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

WHY IT NEEDS A POLICY

Why manage_registration needs a policy

This tool modifies registration data through three possible actions (approve, waitlist, cancel), but all are reversible state transitions rather than destructive deletions. The access control (organizer-only) limits blast radius. Categorized as Write rather than Execute because it operates on a specific data entity (registration) with predefined state transitions, not arbitrary code execution.

From the tool's definition Tool performs state changes on registrations by approving, waitlisting, or canceling them—these are reversible modifications.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

manage_registration Rate-limited

manage_registration 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": {
    "manage_registration": {
      "limits": [
        {
          "counter": "manage_registration_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 EventHorizon MCP Server, so you can run agents against it safely.

FAQ

Questions about manage_registration

What does the manage_registration tool do? +

Manage a registration (approve, waitlist, or cancel). Only available to the event organizer. It is categorised as a Write tool in the EventHorizon MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on manage_registration? +

Register the EventHorizon MCP Server MCP server in PolicyLayer and add a rule for manage_registration: 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 EventHorizon MCP Server. Nothing to install.

What risk level is manage_registration? +

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

Can I rate-limit manage_registration? +

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

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

manage_registration is provided by the EventHorizon MCP Server MCP server (notoriousarnav/eventhorizon-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.