tab_workflow

Cross-tab coordination.

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/tab-workflow.md

WHAT IT DOES

What tab_workflow does on Jshookmcp

AI agents invoke tab_workflow 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 tab_workflow is rated High

Browser automation tool that coordinates across tabs, triggering external browser operations.

From the tool's definition Cross-tab coordination; browser automation server context

Attacks that exploit this kind of access

RECOMMENDED RULE

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

tab_workflow Rate-limited

tab_workflow 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": {
    "tab_workflow": {
      "limits": [
        {
          "counter": "tab_workflow_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 tab_workflow call is checked against it from then on.

FAQ

Questions about tab_workflow

What does the tab_workflow tool do? +

Cross-tab coordination. 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 tab_workflow? +

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

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

Can I rate-limit tab_workflow? +

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

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

tab_workflow 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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