---
pretty_name: MiniWeb
license: other
license_name: miniweb-mixed
language:
- en
task_categories:
- image-text-to-text
tags:
- web-agents
- gui-agents
- benchmark
- trajectories
size_categories:
- 10K<n<100K
configs:
- config_name: tasks
  default: true
  data_files:
  - split: train
    path: data/tasks/train-*.parquet
  - split: test
    path: data/tasks/test-*.parquet
  - split: excluded
    path: data/tasks/excluded-*.parquet
- config_name: demonstrations
  data_files:
  - split: train
    path: data/demonstrations/train-*.parquet
  - split: test
    path: data/demonstrations/test-*.parquet
  - split: excluded
    path: data/demonstrations/excluded-*.parquet
- config_name: miniwebgen_trajectories
  data_files:
  - split: train
    path: data/miniwebgen_trajectories/train-*.parquet
- config_name: miniwebgen_steps
  data_files:
  - split: train
    path: data/miniwebgen_steps/train-*.parquet
- config_name: training_steps
  data_files:
  - split: train
    path: data/training_steps/train-*.parquet
- config_name: task_centric_tasks
  data_files:
  - split: train
    path: data/task_centric_tasks/train-*.parquet
- config_name: task_centric_steps
  data_files:
  - split: train
    path: data/task_centric_steps/train-*.parquet
- config_name: single_primitive_test_tasks
  data_files:
  - split: test
    path: data/single_primitive_test_tasks/test-*.parquet
- config_name: sites
  data_files:
  - split: full
    path: data/sites/*.parquet
- config_name: primitives
  data_files:
  - split: full
    path: data/primitives/*.parquet
- config_name: guides
  data_files:
  - split: full
    path: data/guides/*.parquet
---

# MiniWeb

MiniWeb is a benchmark for web agents that measures skills, not only tasks: 65 locally hosted websites, 37 interaction
primitives (searching, filtering, filling forms, dragging, uploading, ...), and 369 human-written tasks whose every step
is labeled with the primitive it exercises and checked by a verifier. MiniWebGen generates practice data for each
primitive on the training sites, and MiniWebAgent is trained on it. The code that serves the sites, runs the
evaluations and reproduces the paper is in the MiniWeb repository.

## Tables

| Config | Rows | One row per |
|---|---|---|
| `tasks` | 369 (train 304, test 62, excluded 3) | human task: instruction, primitives, the task and verifier as evaluated, the annotator's originals, provenance, the demonstration's server and input logs |
| `demonstrations` | 17.4K | recorded event of a human demonstration (action or observation), with the page's HTML, accessibility tree and screenshot where recorded; `screenshot` rows at the end hold captures no event points to |
| `miniwebgen_trajectories` | 3,128 | MiniWebGen trajectory of one primitive on a training site, with its backend and judge verdicts |
| `miniwebgen_steps` | 17.1K | step of a MiniWebGen trajectory, with its screenshot and the targeted page element; `phase` is `history` for the steps of the primitive a chained trajectory starts with |
| `training_steps` | 31K | step of MiniWebAgent's training data in the agent harness's format: prompt messages, target action, screenshot; `is_target` and `validation` mark the 27.6K steps it is fit on |
| `task_centric_tasks` | 7,280 | task proposed for the task-centric comparison, with its judged outcome |
| `task_centric_steps` | 27.6K | step of the task-centric training data, in the same format as `training_steps` |
| `single_primitive_test_tasks` | 115 | generated single-primitive task of a held-out site (evaluation only) |
| `sites` | 65 | website: domain, train or held-out split, data source and its license |
| `primitives` | 53 | primitive (46 initial, 37 kept) or reasoning operation |
| `guides` | 46 | MiniWebGen's guide for a primitive |

Nested fields (verifiers, logs, prompt messages, actions) are JSON strings. `test` is the 13 held-out sites: no
training data comes from them.

```python
from datasets import load_dataset

tasks = load_dataset("sparklabuofu/MiniWeb", "tasks", split="test")
steps = load_dataset("sparklabuofu/MiniWeb", "training_steps", split="train", streaming=True)
```

## The websites

`site_db/` holds everything the sites need to run offline: one Parquet file per table of the 65 sites
(`site_db/tables/<site>/`), the schema (`schema.json`), the rows each full-text index holds (`fts_rowids/`), the sites'
own images (`static.parquet`: generated product shots, post images, book covers, avatars), and a copy of the external
media the pages show (`media/`: images that site data links to on other hosts, such as product and phone photos,
wikiHow step images and images inside posts, plus the map's basemap tiles; `media_manifest.parquet` lists every linked
URL and whether it could still be fetched). `scripts/restore_site_db.py` in the code repository downloads it, rebuilds
the SQLite database the sites run on, with search behaving exactly as when the tasks were recorded, and unpacks the
media, which the server then serves in place of the original links. Session state from our evaluations is not
included.

## Updates

- 2026-10-19: a task audit removed 7 tasks (369 remain, 62 of them in `test`), corrected the verifiers of 51
  tasks and the definitions of 48, and re-recorded 37 demonstrations; the `sites` table has corrected source and
  license notes for 4 sites. Earlier versions stay in this repository's history.

## Privacy

Annotators appear only as the pseudonyms A1 to A6. The sites' people are synthetic, apart from the public sources
listed in `sites` (for example the Enron email corpus and the WebArena Reddit and GitLab environments).

## License

- Data created for MiniWeb (tasks, verifiers, demonstrations, MiniWebGen and task-centric data, the synthetic data of
  44 sites): CC BY 4.0.
- Data of the 21 sites seeded from public sources: the license of each source, listed in the `sites` table. Some are
  share-alike (CC BY-SA, ODbL) and some restrict use (wikiHow: CC BY-NC-SA; USA Real Estate: educational use), so
  the site database as a whole is for non-commercial research.
- Screenshots and page snapshots show site content and carry the license of that content.
- `site_db/media/` archives third-party images that site data links to (for example product photos from WebShop's
  data and phone photos from GSMArena), as WebShop and WebArena use them, so the benchmark stays reproducible; their
  rights remain with their owners.