| # 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. | |
| Original website text, document files, media, screenshots and frozen reference captures retain their source terms and are not included here. Public accessibility and a source URL do not grant redistribution permission. Task definitions retain source URLs and compact acceptance requirements; full historical reference inputs must be obtained separately under an appropriate authorization basis. | |
| 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. | |