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Browserbash MCP server

by PramodDutta·io.github.PramodDutta/browserbash·v1.5.1
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Plain-English browser tests for AI agents: real Chrome, deterministic verdicts. Free, no API keys.

B78/100grade B
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Safety scan
B78/100

full report

Adoption
Growing

2 stars63 downloads/wk

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If you have run it, two minutes of your experience saves the next person an afternoon.

Browserbash tools (3, 3 write)

write = sends, deletes, buys or posts

Read from the package source without running it. The installed server may list more.

  • run_objectivewrite action

    Run a plain-English browser objective in a real browser and return the structured verdict.

  • run_suitewrite action

    Run a folder of *_test.md files in parallel with memory-aware scheduling. Returns the suite tally

  • run_test_filewrite action

    Run one committable *_test.md file (plain-English steps) and return the structured verdict,

Public scan report

scanner v0.1.9 · 2026-09-26 · same rubric, same numbers if you re-run it

no findings
  • Code scan85 source files scanned25/25
  • –Live reliabilityno gateway calls yet and no remote to proben/a
  • –Tool poisoningtools not inspected (local package is not executed); not countedn/a
  • Auth qualitystatic API keys via environment variables6/15
  • Maintenancelast push 78 days ago12/15
  • Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10
Overall 78/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

What the publisher says

From the Browserbash repository's README, as published. We do not edit it. Read it on GitHub

BrowserBash

Plain-English browser automation. No selectors. Free and open-source.

You write a plain-English objective. An AI agent drives a real Chrome browser step by step — no selectors, no scripts. Ollama-first, so it runs on free local models with no API keys and nothing ever leaves your machine.

npm install -g browserbash-cli
browserbash run "Open news.ycombinator.com and store the top story title as 'top_story'"

Website · Docs / Learn · Tutorials · npm

Both layers are swappable: the engine interprets the English, the provider runs the browser.

Engines (who interprets the English)

Providers (where the browser runs)

LLM backends (who does the thinking) — open source first

Default model is auto, resolved in this order:

  1. Ollama running locally → ollama/ — free, open source, no keys
  2. ANTHROPICAPIKEY set → claude-opus-4-8
  3. OPENAIAPIKEY set → openai/gpt-4.1
  4. otherwise: error with setup guidance

Fully free / open-source stack (the default)

ollama pull qwen3                 # or any tool-capable local model
browserbash run "Open https://example.com and store the heading as 'h1'"

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

Install directly

Runs npx -y browserbash-cli on your machine. Read the scan report first; the gateway never runs local packages.

claude mcp add browserbash -- npx -y browserbash-cli
Add to Cursor

Browserbash: common questions

Is Browserbash MCP server safe?
Mostly: it is graded B (78/100). Read the Browserbash safety report
How do I install Browserbash?
It runs on your machine. Copy the Claude Code, Claude Desktop or Cursor config from the install section.
Does Browserbash need an API key?
Yes. The registry entry asks for ANTHROPIC_API_KEY.
Is Browserbash maintained?
The last commit was 79 days ago (2026-07-10). The latest release is v1.5.1.
What can I use instead of Browserbash?
Servers from other publishers that do the same job: AIHawk MCP server, Browser Use MCP server and Reddit Buddy MCP server. Compare all Browserbash alternatives.

Alternatives to Browserbash

Same job from other publishers: the closest match first, then the best rated.

All Browserbash alternatives →
  • AIHawk
    AI browser agent: browses, clicks, types, and reads real web pages from plain-English instructions.
    More from feder-cr →
    A
  • Browser Use
    Control a real Chrome browser to complete any task: fill forms, extract data, book flights.
    A
  • Reddit Buddy
    Reddit browser for AI assistants. Browse without API keys; add credentials for search and analysis.
    A
  • Safari
    Native Safari browser automation for AI agents — 98 tools, zero Chrome overhead.
    C
  • Agent360 Browser MCP
    Drive your real, logged-in Chrome from any AI agent - 40 tools. Needs our Chrome extension too.
    A
Browserbash vs AIHawkBrowserbash vs Browser UseBrowserbash vs Reddit Buddy

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