Open source · AGPL-3.0

Drive your real Chrome from a CLI or an LLM.

RZN Browser is a local browser automation tool. Open sites, click, fill forms, extract data, run repeatable workflows, or let an LLM drive ambiguous browser tasks — all inside your real Chrome session.

Install on Chrome → View on GitHub
CLI + extension • Native messaging • Local only
rzn — zsh
$ rzn run amazon.search "wireless headphones"
→ navigating to amazon.com
→ clicking search field
→ typing "wireless headphones"
→ submitting search
✓ extracted 24 results
$ rzn agent "find a sub-$200 pair
  with ANC and 4★+"
→ LLM driving page actions...
✓ Sony WH-1000XM4 — $178

Built-in workflow packs

RZN ships with workflows for the sites you actually use. No SDK boilerplate.

Search & research

GoogleBingYouTubePubMedarXivScienceDirect

Shopping, travel, reviews

AmazonEtsyG2CapterraApp StoreAirbnb

AI apps

ChatGPTClaude

Social & communities

XRedditHacker NewsInstagram

How it works

CLI on your machine. Extension in your Chrome. Native messaging in between.

01

Install the CLI and the extension.

The extension talks to the local CLI over Chrome native messaging. Nothing leaves your machine.

02

Run a workflow or hand a task to an LLM.

Commands flow CLI → extension → page actions in your real, signed-in tab.

03

Hard cases fall back to CDP.

A short Chrome DevTools Protocol step kicks in only when the page-action layer cannot finish the job.

Where RZN Browser fits

Best fit

  • • Local browser automation from CLI or MCP
  • • Built-in workflow packs
  • • Repeatable browser tasks
  • • LLM-driven tasks when the flow is ambiguous
  • • Signed-in product surfaces (ChatGPT, Claude, X, Reddit, Instagram)

Not for

  • • Cloud browser infrastructure
  • • Mainstream test automation
  • • Large-scale scraping fleets
  • • Teams looking for a general-purpose browser SDK first

Local-only.

RZN Browser does not send page data, command results, or telemetry to any RZN server. The extension talks only to the CLI on your own machine. Read the full privacy policy →