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license: apache-2.0
pretty_name: Gnote computer-use environment from a one-line request (REA)
tags:
- computer-use
- cua
- gui-agent
- rl-environment
- agentenv
- desktop
- linux
- rea
- notes
- note-taking
- from-request
---
# Gnote: a computer-use environment built from a one-line request
**The real Gnote 46 note-taking app running on an Ubuntu 24.04 desktop, as an [agentenv](https://pypi.org/project/agentenv-framework/) computer environment. An agent completes the task only through screenshots, mouse and keyboard, and a verifier grades the saved files with no model.**
Claude Code built this environment from a one-line request in about 17 minutes, with only REA's build skill and MCP tools; [How it was made](#how-it-was-made) has the request and the steps. Gnote opens on its list of notes at launch: its two built-in notes and a synthetic Shopping List of six items. The agent has to add olive oil to the Shopping List. There is nothing to save: Gnote saves a note by itself a few seconds after a change. It sees only the screen and acts only with the mouse and keyboard.
## Watch
- Agent runs (Claude Code with Claude Sonnet 5.5): [run 1](media/solve-1.mp4), [run 2](media/solve-2.mp4), [run 3](media/solve-3.mp4)
- Witness, which proves the task can be done through the computer: [witness.mp4](media/witness.mp4)
Each video is the computer's own screen recording at 10 frames per second.
## The task
> Add olive oil to my Shopping List note in Gnote.
`bundle/artifacts/add-olive-oil-check/verify.py` reads the app's files through the computer's `data/get` view and passes only if every check holds:
| Check | Kind | File |
| --- | --- | --- |
| `olive-oil` | `text_contains` | `.local/share/gnote/75573f01-009e-4771-acee-93df3e993db1.note` |
| `keeps-cherry-tomatoes` | `text_contains` | `.local/share/gnote/75573f01-009e-4771-acee-93df3e993db1.note` |
| `keeps-lemons` | `text_contains` | `.local/share/gnote/75573f01-009e-4771-acee-93df3e993db1.note` |
A Gnote note is an XML file named by the note's id, here `.local/share/gnote/75573f01-009e-4771-acee-93df3e993db1.note`, and the checks read the text of its `note-content` element: it must contain "olive oil", and still contain "cherry tomatoes" and "lemons". REA's draft suggested the olive oil check as written, and a check that the whole original list was kept as one block, which holds only if the new item goes at the end; Claude Code split that into checks on two of the items.
## Results
3 of 3 runs passed, about $0.55 per run.
| Run | Outcome | Turns | Cost | Video |
| --- | --- | --- | --- | --- |
| 1 | passed | 9 | $0.97 | [video](media/solve-1.mp4) |
| 2 | passed | 9 | $0.47 | [video](media/solve-2.mp4) |
| 3 | passed | 9 | $0.22 | [video](media/solve-3.mp4) |
## Run it
You need Docker. `agentenv-framework` builds the computer: Ubuntu 24.04 with the app installed from Ubuntu's archive (`gnote` 46.0).
```bash
pip install agentenv-framework==0.9.1431
hf download earakely-scale/GnoteFromRequestComputerEnv-REA --repo-type dataset --local-dir gnote-request
agent-env run gnote-request/bundle --task add-olive-oil --agent claude-code --model <model>
```
The agent needs a model provider configured for agentenv. `--task smoke` only boots the computer, with no agent. `bundle/README.md` describes the bundle in detail.
## How it was made
Claude Code built this environment from a one-line request, given only [REA](https://github.com/morluto/rea)'s build skill and REA's MCP tools:
> Build me a Gnote environment where the agent adds olive oil to the shopping list note.
It asked only the skill's upfront questions, wrote no app-specific scripts, and finished in about 17 minutes.
An earlier build of this request was held back because its verifier graded before Gnote's delayed save; this build's verifier waits for the app's files to settle, and every witness stage and every solve check reported them settled. The steps were REA's usual ones:
1. **Capture.** REA launched Gnote on a Linux desktop and recorded its package, windows and opened files while the edit was made. It also recorded the app's state folders before and after.
2. **Export.** REA turned the capture into an agentenv `computer_app`. It installs the app, seeds the starting files, starts the app, and waits for its main window. It also serves typed views of the app's files for verifiers.
3. **Task.** The task's checks were validated against the capture: they fail on the starting state and pass on the captured end state.
4. **Witness.** In a fresh computer, the item was added through computer actions alone, and the checks were read at four stages. They held on the first try:
| Stage | Checks |
| --- | --- |
| `seed` | fail, as expected: the note has no olive oil; the kept-item checks pass |
| `after_edit` | pass, read straight after typing with no save step, once Gnote's own save landed |
| `near_miss` | fail, as expected: the item was changed to "olive oyl" |
| `after_reset` | fail, as expected: `data/reset` restored the seed |
The agent runs came after the build: Claude Code with Claude Sonnet 5.5 (`--model anthropic/claude-sonnet-5-5 --no-emulate`, on an amd64 host) solved the task 3 times, each run recorded.
## What's inside
```
bundle/ the agentenv bundle: envs/ (app module, seed files), tasks/, artifacts/ (verifier), evals/
media/ witness and agent-run recordings (MP4) with short GIF previews
results.json the runs above, with each check's result
```
## Limits
- Gnote starts on its note list, so the agent must open Shopping List. The note opens with its first 40 characters selected, as the seed saved it, so typing before clicking into the note replaces its title and first items, and the cherry tomatoes check fails.
- The checks look for "olive oil" anywhere in the note, as written: on a line of its own or not, it passes, and "Olive oil" fails.
- Only cherry tomatoes and lemons are checked as kept, so deleting one of the other four items still passes.
- The computer installs whatever `gnote` Ubuntu 24.04's archive holds at build time (46.0 for these runs); it is not pinned.
- Three runs is a small sample: the solve rate shows the task is solvable, not how hard it is.
## Licences
The bundle code, the task and the synthetic seed files are Apache-2.0. Gnote itself is not included: the computer installs it from Ubuntu's archive (`gnote` 46.0) at build time, under its own licence (GPL-3.0-or-later).
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