WebsiteBench
Collection
Can AI agents rebuild websites through browser exploration? The 70 WebsiteBench tasks for the Harbor framework. • 1 item • Updated
Access WebsiteBench
The reference websites in WebsiteBench reproduce the appearance and behavior of real websites. Their text, images, fonts, and trademarks belong to their owners.
By requesting access you agree to use WebsiteBench for non-commercial research only and not to redistribute the reference website content outside this dataset.
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WebsiteBench
Given a production-level website they can explore through a browser, agents must reverse-engineer a full-stack version that matches its appearance and behavior as closely as possible.
This dataset holds the 70 WebsiteBench tasks in the native task format of the
Harbor framework (version 0.25.0).
The same task contents are published on Harbor Hub
as reacher-z/WebsiteBench@v1; every task has the same Harbor content hash in both
places. Code, documentation, and the evaluation commands live on
GitHub.
- Project page: website-bench.com
- Code: TIGER-AI-Lab/WebsiteBench
Download and run
Accept the access terms on this page, log in with hf auth login, then use the
download script from the GitHub repository. It verifies every file against
manifest.json and restores the executable permissions that Hugging Face does not
store:
git clone https://github.com/TIGER-AI-Lab/WebsiteBench.git
cd WebsiteBench
uv sync
uv run python scripts/download_tasks.py --source hf --task medium
uv run harbor run --path ./local-tasks/medium --agent oracle
Omit --task to download all 70 tasks into local-tasks/. The GitHub
documentation
describes coding-agent runs, batch runs, and results.
Contents
| Path | Contents |
|---|---|
tasks/<task>/instruction.md |
The reconstruction task given to the agent |
tasks/<task>/task.toml |
Harbor configuration, resources, and network policies |
tasks/<task>/environment/ |
Agent environment, browser gateway, mailbox, and the reference website |
tasks/<task>/solution/ |
The bundled oracle implementation installed by solve.sh |
tasks/<task>/tests/ |
The separate verifier, its oracle runtime, and the hidden test suite |
manifest.json |
SHA-256, size, and mode of every file, and each task's Harbor content hash |
Validation
During benchmark construction, every task's bundled oracle solution was run through
its verifier; these runs are historical records. The files in this release were
checked statically: each task passes the repository's asset check, and every file
matches manifest.json and the Harbor Hub package.
License and terms
The benchmark code, task definitions, and verifier are released under the Apache-2.0 license. The reference websites reproduce third-party sites for evaluation; their content remains the property of its owners and is provided for non-commercial research only, as stated in the access terms.
Each task file carries a harbor-canary GUID. Please exclude documents containing
these strings from training data.
Citation
@misc{zhang2026websitebench,
title = {WebsiteBench: Can AI Agents Rebuild Websites through Browser Exploration?},
author = {{WebsiteBench Authors}},
year = {2026},
url = {https://github.com/TIGER-AI-Lab/WebsiteBench},
}
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