fastbrowse
fastbrowse is an open-source browser agent that picks each click from the controls actually on the page, backs every claim in its answer with a quote from the page, and keeps passwords, payments and other irreversible actions under code-enforced limits; it runs locally or in a cloud browser.
Why it matters
For developers who want an AI agent to fill forms, check out or pull data from websites, it aims to make results checkable and safer: answers come with page quotes, secrets never reach the model, and actions like paying or deleting stop until you allow them.
Highlights
- A choice model called Jev selects the next action from an indexed list of the page's real controls, so there are no selectors to maintain.
- Every claim in a complete answer cites a verbatim page quote; pass a schema to get validated structured data back.
- Submit, pay, delete and send pause until authorized, and step, time and dollar limits are enforced in code.
- Available as a CLI, Python library, MCP server and coding-agent skill, with Node, Go, .NET and Java clients (the last two added in v0.9.0).
- The maker reports a 99.2% pass rate at about $0.03 a run versus 96.3% at $0.32 for the hosted Browser Use agent on 46 tasks, though it was slower.unverified
Taken from the project's own README, docs or launch page. Claims about speed or accuracy are the maker's unless stated otherwise.
Worth knowing: Still labeled beta. macOS binaries are ad-hoc signed and the Windows binary is unsigned. Runs need model API keys, and a Browser Use Cloud key for the default cloud browser.
Quick facts
| Pricing | Open source and free to self-run (you pay for OpenRouter or other model calls); hosted plans: Free ($2 of runs a month), Starter $29/mo, Pro $199/mo, Scale $999/mo |
|---|---|
| Free or paid | Free (open source) + Paid hosted |
| License | MIT |
| Language | Rust core with Python (3.13+) packaging; needs Chrome or Chromium |
| Platform | Local Chrome or Browser Use Cloud browsers; binaries for macOS, Linux and Windows |
| GitHub stars | ★ 172 (as of 2026-11-01) |
| Maker | Agent Labs |
Links
- Official site: https://fastbrowse.ai/
- Repository: https://github.com/agent-labs-dev/fastbrowse
- Release notes: https://github.com/agent-labs-dev/fastbrowse/releases
- Docs: https://fastbrowse.ai/docs
Related ranking
See how established tools compare in Best AI Agents That Do Tasks for You. New releases aren't scored until we review them against the rubric.
What we couldn't verify
- highlights[4] (benchmark figures are the maker's own)
Checked 2026-11-01 from the tool's own pages. Prices and star counts change, so confirm on the official site. Listing here is not a ranking or an endorsement.
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