extension_reload

Reload an installed extension by unloading and loading it again.

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/extension-reload.md

WHAT IT DOES

What extension_reload does on Jshookmcp

AI agents invoke extension_reload 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 extension_reload is rated High

Triggers external browser/runtime operation by cycling an extension's load state.

From the tool's definition Reload an installed extension by unloading and loading it again

Attacks that exploit this kind of access

RECOMMENDED RULE

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

extension_reload Rate-limited

extension_reload 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": {
    "extension_reload": {
      "limits": [
        {
          "counter": "extension_reload_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 extension_reload call is checked against it from then on.

FAQ

Questions about extension_reload

What does the extension_reload tool do? +

Reload an installed extension by unloading and loading it again. 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 extension_reload? +

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

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

Can I rate-limit extension_reload? +

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

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

extension_reload 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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