#Servo (3)

Moli: A Rust Headless Browser Built for AI Agents

Moli is Lexmount open-source headless browser: a standalone Rust kernel rather than a Chromium wrapper, built for AI agents (9k+ stars, dual Apache-2.0 / MIT). Its core design is on-demand layout and paint — by default it reads page structure without triggering layout or paint; –layout enables real geometry, hit-testing and screenshots, with layout frozen into a one-shot FrozenLayoutTree and paint state discarded after use. CDP, WebDriver Classic and WebDriver BiDi share one kernel, so no separate driver or browser install is needed. Official self-tests: 73 MiB median RSS on a 192-site crawl (headless Chrome: 773 MiB) and 81.88% success over 1,308 comparable Lexbench tasks (Chrome 99.85%). No benchmarks reproduced; recorded as unverified.