Jev Browser Control settings

1. Where Jev runs

Jev is TypeSafe's decision model. Each browser step is one Jev call; typing a value uses one call to a small text model.

Jev Browser Control credits
One key, no other accounts. Prepaid credits; a typical task costs about a cent. Your own OpenRouter key
Free and open source (MIT). You pay OpenRouter directly. Custom endpoint
TypeSafe direct, or any compatible decisions API.

Jev Browser Control API key

Get a key and buy credits at jevbrowsercontrol.com/dashboard.

Advanced

Service URL

OpenRouter API key

Create one at openrouter.ai/settings/keys. Setting a credit limit on the key is a good idea.

Decisions URL Key for the decisions URL Chat completions URL (text helper) Key for the chat URL (if different)

For TypeSafe direct, set the Jev model below to jev-latest.

2. Connect Claude

A small MCP server runs on your computer when Claude starts. This extension connects to it on 127.0.0.1 only. Status: checking…

Claude Code

claude mcp add jev-browser -- npx -y https://jevbrowsercontrol.com/downloads/jev-browser-control-mcp-0.2.0.tgz

Claude Desktop

Settings → Developer → Edit Config, then add:

{
  "mcpServers": {
    "jev-browser": { "command": "npx", "args": ["-y", "https://jevbrowsercontrol.com/downloads/jev-browser-control-mcp-0.2.0.tgz"] }
  }
}

Then ask Claude things like “Use the browser to find the opening hours of the Rijksmuseum.”

Let Claude control this browser Port

Change it only if you also set JBC_PORT for the MCP server.

Put tabs Claude opens in an orange “Jev” tab group

3. Remote AI apps (Grok Bot, ChatGPT, claude.ai)

Apps that run in the cloud can't reach a program on your computer. With this on, the extension keeps a connection open to jevbrowsercontrol.com, and those apps reach your browser through https://jevbrowsercontrol.com/mcp with your key. Status: off

Let remote AI apps control this browser Key for remote control

Anyone with this key can control this browser while remote control is on, so keep it secret and revoke it in your dashboard if it leaks. Clicks that buy, pay, send, post or delete always wait for your OK in the side panel.

In the app

MCP server URL: https://jevbrowsercontrol.com/mcp
Authorization: Bearer <your jbc_ key>

4. Models

Jev model

~typesafe/jev-latest always uses the newest Jev. Pin typesafe/jev-1.13 to freeze a version.

Text model (writes the values Jev types)

Any OpenRouter chat model. The default, inception/mercury-2.5, is fast and cheap.

5. Limits per task

Actions

Seconds

Cost (USD)

6. Safety

Ask before clicks that are hard to undo (buy, pay, send, delete, post)

Password and file-upload fields are never offered to Jev or Claude.

Blocked sites

One domain per line. Neither Jev nor Claude will act on these sites.

Input method