| # Third-party content | |
| The Apache-2.0 license covers project-owned code, documentation and task requirements. Initial definitions and input-checking concepts originate in [Browser Eval](https://github.com/lexmount/browser-eval); its LexMount copyright notice is retained in NOTICE. | |
| ## Reference texts included for evaluation | |
| `definitions/materials/primary-content-20261103/` includes the reference texts that scoring needs for all five suites (webfetch, dynamic-content, popular-sites, access-restrictions and articles): main-content references, reference body regions and article endings, kept in their original language and wording. They are included only so the benchmark can be scored from a clean download. The Apache-2.0 license does not cover them. Each text keeps the terms of its source website, and inclusion does not grant any further right to reuse it. | |
| Page captures, screenshots, document and media files, source observation files and measured provider outputs are not included. | |
| If you own rights in an included text and want it removed or changed, open a discussion in this dataset repository's Community tab. Give the task ID and source URL. We will remove or replace the text and record the change in a new revision. Earlier revisions stay in the repository history. | |
| WebMainBench, WCXB and WebArena are separate projects and are not redistributed as LexBench Web Fetch suites. Cite their owners and follow their terms when using them through an execution harness. | |
| ## Scoring dependencies | |
| Exact versions and resolved hashes are in `pyproject.toml` and `uv.lock`. | |
| | Library | Use | License | | |
| | --- | --- | --- | | |
| | [Beautiful Soup](https://www.crummy.com/software/BeautifulSoup/) | HTML parsing | MIT | | |
| | [Soup Sieve](https://github.com/facelessuser/soupsieve) | CSS selectors | MIT | | |
| | [APTED](https://github.com/JoaoFelipe/apted) | Optional tree-edit scoring | MIT | | |
| | [RapidFuzz](https://github.com/rapidfuzz/RapidFuzz) | Optional text matching | MIT | | |
| These libraries retain their own licenses. Installing the `tree` extra enables the optional scoring dependencies. | |