lexmount/moli is a headless browser for AI agents. The repository states it is a standalone browser kernel built directly in Rust rather than a wrapper around Chromium. The latest release shown in the repository is v1.1.18, and the provided material contains no changelog for that version.
It handles page structure on the basis of the DOM and styles, skipping layout and paint for requests that only need structural lookup, and computing layout when real geometry is required. CDP, WebDriver Classic, and WebDriver BiDi are served on one port through the same kernel and scheduler. It is licensed under Apache-2.0, and the repository holds 867 files spanning 21 crate-level tests, 646 files of Web Platform Tests ports, and 220 files in a separate benchmark harness.
In the maker's own benchmark, Lexbench-Headless-Browser, it passed 1,071 of 1,308 comparison tasks for an 81.88% success rate. Chromium's success rate was 99.85%. Across 557 resource-comparison tasks, median CPU time per task was 100.6 milliseconds and peak memory was 92MiB, against Chromium's 687 milliseconds and 697MiB. The resource figures are low, but this is an in-house benchmark and the success rate still trails Chromium, so the performance advantage is hard to extend to the general range of web tasks.