How to use Jev Browser: what you can do with it

4 use cases

• Log in and fill web forms from Claude Code

  Give Claude one outcome such as logging in or submitting a form, and let the browser tool run the steps.

  • REPO Ying-Kai-Liao/jev-browser
  • Claude Code
  • Work and operations
  • Intermediate
  View prompt

  Use the jev-browser MCP server from the Ying-Kai-Liao/jev-browser repo to open <target-url> and run browser_do with the goal "<outcome>" and values <values-object>. Return the status, url, and actions list. Verify that the status is done before reporting success.

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• Pull the part of a long article that answers a question

  Extract only the blocks of a long page that answer your question, in the page's own words.

  • REPO Ying-Kai-Liao/jev-browser
  • Work and operations
  • Intermediate
  View prompt

  In the Ying-Kai-Liao/jev-browser repo, run node examples/read-demo.mjs with <url> and the question <question>. Return the returned text. Verify that the answer appears in the text and check the count of dropped blocks.

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• Check a page layout at phone width

  Resize the browser to a phone size, open a page, and capture what it looks like.

  • REPO Ying-Kai-Liao/jev-browser
  • Claude Code
  • Work and operations
  • Beginner
  View prompt

  Use the jev-browser MCP server to call browser_open on <url> with viewport "390x844", then call browser_screenshot. Return the PNG and a short list of layout problems. Verify that the screenshot shows the phone-sized layout before you report it.

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• Stop a checkout before it places an order

  Run a cart and checkout flow that pauses at any irreversible button until you approve it.

  • REPO Ying-Kai-Liao/jev-browser
  • Claude Code
  • Work and operations
  • Intermediate
  View prompt

  Use the jev-browser MCP server to run browser_do on <store-url> with the goal "<checkout-goal>". Stop when the status is needs_confirmation and return the pending action. Verify with the user before you re-call with allow_irreversible true.

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Quick start with Jev Browser

1. Check you have what it needs: Node.js and npm; A TypeSafe API key, or an OpenRouter API key; Claude Code for the MCP route, or a source checkout of the repo for the read example.
2. Open Ying-Kai-Liao/jev-browser on GitHub and read the README and license.
3. Run npx playwright install chromium once.
4. Run claude mcp add jev-browser -e TYPESAFE_API_KEY=your-key -- npx -y -p jev-browser jev-browser-mcp and replace your-key with your key.
5. Restart Claude Code and ask it to open the target site with browser_open.
6. Ask Claude to call browser_do with the goal and a values object holding the email and password or the form fields.

These steps come from our top use case, Log in and fill web forms from Claude Code, which also has a copy-paste agent prompt.

Using the Deduped MCP, get the setup steps for Ying-Kai-Liao/jev-browser

claude mcp add --transport http deduped https://dedupedai.com/mcp

Jev Browser alternatives · Best AI repos for Work and operations

About this repo

• Who it is forDevelopers and AI agent users who want Claude to complete multi-step web tasks in a real browser, using their own TypeSafe or OpenRouter API key.
• Why it is hot126 stars, launched 40 days ago
• LanguageJavaScript
• Sourcegithub.com/Ying-Kai-Liao/jev-browser · Back to Hot repos

Requirements

• Node.js and npm
• A TypeSafe API key, or an OpenRouter API key
• Claude Code for the MCP route, or a source checkout of the repo for the read example

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