BrowserBash

BrowserBash is a natural-language browser automation CLI that turns plain-English goals into real browser actions. Markdown tests, CI output, free local models, no API keys.

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Overview

BrowserBash is a natural-language browser automation CLI for running browser tasks and tests from plain English. It turns an objective into real browser actions, then returns structured output that can be consumed by CI systems and other automation tools.

The product is built around an open-source CLI, Markdown-based test files, and support for real browsers on local machines or supported cloud grids. The source emphasizes a free default path with local models, no required API keys, and optional dashboard and cloud features for run history and replay.

Features

Plain-English objectives

Describe a browser task in plain English, and BrowserBash turns it into real browser actions without writing selectors or page-object code.

Markdown test files

Store scenarios in committable `*_test.md` files, reuse flows with `@import`, and template values with variables for repeatable tests.

Free model support

Run on free local models through Ollama or free OpenRouter models without API keys, with optional support for your own Anthropic or OpenRouter key.

Multiple browser providers

Drive local Chrome, any CDP endpoint, or cloud grids such as Browserbase, LambdaTest, and BrowserStack from the same objective.

Agent and CI output

Stream one JSON event per line in NDJSON format and use clean exit codes so agents and CI systems can read the result directly.

Recording and replay

Capture video and screenshots with `--record`, then view runs in a local dashboard or a free cloud dashboard with replay and history.

Use Cases

CI regression testing
Write end-to-end browser checks as readable Markdown files, then run them in CI with exit codes that indicate pass, fail, error, or timeout.
Routine browser tasks
Automate login, checkout, scraping, and other browser workflows by describing the objective in plain English instead of scripting selectors.
Debugging and replay
Capture video and screenshots for a run, then replay the session in the dashboard when a step fails or you need a shareable record.
Private local automation
Run browser automation locally with Ollama when you want to avoid API keys and keep the session on your machine.
Cross-provider test runs
Point the same test file at a local browser or a cloud grid when your team needs to move between laptop runs and hosted infrastructure.

Pros and Cons

Pros

Plain-English input reduces the need to write selectors or browser automation code.
The default path can run free with local models and no API keys.
Structured NDJSON output and exit codes make it easier to use in CI and agent workflows.
Supports real browsers and multiple providers, including local Chrome and cloud grids.
Open source under Apache-2.0, which allows inspection, forking, and commercial use.

Cons

The source does not document a full public integration catalog or a broad set of advanced platform constraints.
Some paid cloud-retention details are still described as coming soon, so the optional paid tier is not fully available yet.

FAQ

What does BrowserBash do?

BrowserBash is designed to automate browser tasks from plain English. The source shows it can run objectives such as logging in, adding items to a cart, scraping text, and running Markdown-based tests, then returning structured output and an exit code.

How do I get started?

The source says you can install the CLI with npm, run it with local Chromium or another supported browser provider, and use a free local model through Ollama. A cloud dashboard account is optional for run history and replay.

Is BrowserBash free?

Yes. The pricing page says the CLI, local dashboard, and a cloud account are free, with no credit card required. It also says the only optional paid item is extended cloud data retention beyond the free retention window, which is coming soon.

Do I need an API key to use it?

BrowserBash supports free local models through Ollama and free OpenRouter models with no API keys required. You can also bring your own Anthropic or OpenRouter key, and the source mentions any OpenAI-compatible server such as vLLM or LM Studio.

Can I use BrowserBash in commercial or CI workflows?

The source says BrowserBash is open source under Apache-2.0. It can be used commercially, and the CLI is positioned for CI because it emits NDJSON events and uses exit codes to signal pass, fail, error, or timeout.

Quick Facts

Category: Developer Tool
Primary interface: CLI
Automation style: Natural-language browser automation
License: Apache-2.0
Default model path: Local Ollama models
Source domain: browserbash.com