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How to pull the part of a long article that answers a question with Jev Browser

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

Short answer: Run git clone https://github.com/Ying-Kai-Liao/jev-browser && cd jev-browser; then run npm install; run npm run setup. All steps.

Authorization notice. Jev Browser is dual-use. Only use it on software, sites and systems you own or have explicit permission to test.

Who it is forA researcher or analyst who needs a specific fact from a long article, documentation page, or reference page.

The problemLong pages cost many tokens to read in full, and a snapshot shows only the text in the viewport.

The outcomeA shorter text containing the page's own blocks that help answer the question, with dropped blocks marked in place.

What you need first

  • 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

Steps

  1. Run git clone https://github.com/Ying-Kai-Liao/jev-browser && cd jev-browser.
  2. Run npm install.
  3. Run npm run setup.
  4. Run cp .env.example .env and add your TYPESAFE_API_KEY or OPENROUTER_API_KEY.
  5. Run node examples/read-demo.mjs "https://..." "your question" with your URL and question. (inferred, check the README)

Prompt for your agent

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.

Caveat. The README says browser_read skips Jev entirely on short pages under 8,000 characters, so it helps only with long articles and documentation.

Use this in your AI agent

Ask your agent

Using the Deduped MCP, get the setup steps for Ying-Kai-Liao/jev-browser and "Pull the part of a long article that answers a question"

Add Deduped to Claude Code once

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

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