ws_export_capture

Export captured WebSocket frames to artifacts/captures as JSON or NDJSON.

SERVERJshookmcp SOURCE@jshookmcp/jshook

Medium RISK CLASS

Category Write

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/ws-export-capture.md

WHAT IT DOES

What ws_export_capture does on Jshookmcp

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

RISK

Why ws_export_capture is rated Medium

Creates new files with exported WebSocket data; reversible write operation with no destruction or code execution.

From the tool's definition Export captured WebSocket frames to artifacts/captures as JSON

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs ws_export_capture 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 ws_export_capture, this is the rule to start with:

ws_export_capture Rate-limited

ws_export_capture 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": {
    "ws_export_capture": {
      "limits": [
        {
          "counter": "ws_export_capture_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about ws_export_capture

What does the ws_export_capture tool do? +

Export captured WebSocket frames to artifacts/captures as JSON or NDJSON. It is categorised as a Write tool in the Jshookmcp MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on ws_export_capture? +

Register the Jshook MCP server in PolicyLayer and add a rule for ws_export_capture: 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 ws_export_capture? +

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

Can I rate-limit ws_export_capture? +

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

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

ws_export_capture 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.

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