mantis-browser
Advanced tools
Lets AI agents browse the web as short, numbered text instead of screenshots.
Mantis shows the agent what a person would notice on a page, in a few lines, and lets it act by number. It works with Claude Code, Codex, Cursor or your own agent as an MCP server. Install in two commands.
30 real-site tasks, Codex gpt-6-luna as the agent, graded by a blind judge (gpt-6.1-sol):
| Correct | Tokens per task | Tool calls | Time per task | |
|---|---|---|---|---|
| Mantis | 14/30 | 190k | 8.7 | 61s |
| Accessibility tree (Playwright MCP) | 11/30 | 435k | 13.3 | 67s |
| Screenshots | 9/30 | 346k | 22.2 | 77s |
Method and caveats: bench/RESULTS.md.
MIT
FAQs
A lean browser interface for AI agents: web pages as short numbered text.
The npm package mantis-browser receives a total of 0 weekly downloads. As such, mantis-browser popularity was classified as not popular.
We found that mantis-browser demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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