ctx_events · Ruyipage MCP: Risk & Policy

WHAT IT DOES

What ctx_events does on Ruyipage

AI agents invoke ctx_events to trigger actions in Ruyipage. 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 ctx_events needs a policy

Given the server exposes Firefox browser automation capabilities and sibling tools include actions like click, input, and navigation, 'ctx_events' likely relates to browser event context or event triggering. Empty description lowers confidence significantly, but browser event tools typically execute actions in the browser.

From the tool's definition Tool name 'ctx_events' on a browser automation server; description is empty and uninformative.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

ctx_events Rate-limited

ctx_events 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": {
    "ctx_events": {
      "limits": [
        {
          "counter": "ctx_events_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 Ruyipage, so you can run agents against it safely.

FAQ

Questions about ctx_events

What does the ctx_events tool do? +

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

How do I enforce a policy on ctx_events? +

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

What risk level is ctx_events? +

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

Can I rate-limit ctx_events? +

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

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

ctx_events is provided by the Ruyipage MCP server (neverl805/ruyipage_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.