magnitudedev/browser-agent

Health v2 · maintenance only

Adoption not part of the score

4121 stars · 236 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Magnitude is an open-source, vision-first AI browser agent written in TypeScript that controls the browser through natural language commands. It combines high-level task execution, low-level mouse/keyboard actions, structured data extraction with Zod schemas, and a built-in test runner with visual assertions for web apps.

Use cases

• automate repetitive browser tasks using natural language
• run AI-driven end-to-end tests on my web app
• extract structured data from web pages into a schema
• integrate between web apps that have no API
• replace flaky selenium selectors with vision-based assertions
• build my own browser agent on top of an existing framework
• scrape website data by describing what I want instead of writing selectors

When to choose

• You need automation that works across arbitrary or changing UIs without brittle CSS selectors
• You want AI-assisted E2E testing with built-in visual verification and assertions
• You need to extract structured data (e.g. Zod-validated) from web interfaces
• You want a programmatic act/extract building block for custom agent workflows
• You must integrate web apps that lack APIs

When to avoid

• You need deterministic, fast, low-cost automation without LLM inference overhead - plain Playwright or Selenium is cheaper and more predictable
• You operate offline or in air-gapped environments since it depends on vision AI models
• You do very high-volume scraping where per-action LLM latency and cost are prohibitive
• You need to automate native desktop or mobile applications rather than browsers

Facets

framework · maturity active

agent-framework e2e-testing testing web-scraping workflow-automation testing web-development developer-tools browser cli cross-platform browser-automation vision-ai natural-language-control playwright rpa selenium-alternative visual-assertions data-extraction zod-schemas test-runner llm-powered ai-agents automation nodejs

Member repositories

For agents

markdown · JSON · MCP: product_card(name="magnitudedev/browser-agent")