websocket_open

Open a WebSocket session.

SERVERJshookmcp SOURCE@jshookmcp/jshook

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-vmoranv-jshookmcp/websocket-open.md

WHAT IT DOES

What websocket_open does on Jshookmcp

AI agents invoke websocket_open to trigger actions in Jshookmcp. 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.

RISK

Why websocket_open is rated High

Opens a network connection to external hosts, enabling persistent communication channels with arbitrary endpoints.

From the tool's definition Open a WebSocket session

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs websocket_open safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Jshookmcp, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For websocket_open, this is the rule to start with:

websocket_open Rate-limited

websocket_open 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": {
    "websocket_open": {
      "limits": [
        {
          "counter": "websocket_open_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Jshookmcp, apply this rule, and every websocket_open call is checked against it from then on.

FAQ

Questions about websocket_open

What does the websocket_open tool do? +

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

How do I enforce a policy on websocket_open? +

Register the Jshook MCP server in PolicyLayer and add a rule for websocket_open: 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 Jshookmcp. Nothing to install.

What risk level is websocket_open? +

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

Can I rate-limit websocket_open? +

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

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

websocket_open is provided by the Jshook MCP server (@jshookmcp/jshook). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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