computer-use SKILL.md skillA
computer-use from vellum-ai/vellum-assistant is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add vellum-ai/vellum-assistant/computer-use@git:20260924.8167520Pins git:20260924.8167520 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- vellum-ai/vellum-assistant
- Path
assistant/src/config/bundled-skills/computer-use/SKILL.md- Versions recorded
- 13
- Latest version
- git:20260924.8167520, committed Sep 24, 2026
- First version recorded
- Mar 17, 2026
- Size
- 6,048 bytes
- Repository stars
- 1,442
- License
- MIT
Control a connected desktop.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
This skill provides the computer_use_* action tools for controlling a connected desktop. CU tools run through the main agent loop via HostCuProxy. The skill is internally preactivated for conversations with a connected desktop client. Tools in this skill are proxy tools. Execution is forwarded to a connected desktop client or handled by the assistant's virtual desktop. ## Observations Every computer-use step returns the accessibility tree. Every action also returns a screenshot taken after it ran (one at the end of a `computer_use_sequence`), so check it to see what your action did. An observation comes with a screenshot on a desktop's first look, when it is window-scoped, or when you pass `include_screenshot: true`. Ask for one whenever the tree is not enough to act on: a canvas, a game, a custom-drawn view, few or unlabeled controls, or a layout question. The tree is walked to a limited depth to keep steps fast, and says when it was cut off. If the element you need is not in it, call `computer_use_observe` with `full_tree: true`. ## Coordinates and live editing Prefer element IDs from the latest observation. Click, scroll and drag …
Read the whole file at its exact version.
How to install
mdr add vellum-ai/vellum-assistant/computer-use@sha256:ab840ea498793e33The line at the top of this page pins the label git:20260924.8167520, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_kv5rog5wbz2dqjhy)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 13 versions of this file, between Mar 17, 2026 and Sep 24, 2026, about one every 16 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260924.8167520 latest | 2026-09-24 | 8167520 | 6,048 B | A | view · diff |
| git:20260919.2dce45d | 2026-09-19 | 2dce45d | 4,945 B | A | view · diff |
| git:20260916.5123707 | 2026-09-16 | 5123707 | 4,945 B | A | view · diff |
| git:20260915.4cba45d | 2026-09-15 | 4cba45d | 4,211 B | A | view · diff |
| git:20260915.8060751 | 2026-09-15 | 8060751 | 3,593 B | A | view · diff |
| git:20260915.9f05a48 | 2026-09-15 | 9f05a48 | 3,464 B | A | view · diff |
| git:20260914.45a2049 | 2026-09-14 | 45a2049 | 3,152 B | A | view · diff |
| git:20260906.22f66f9 | 2026-09-06 | 22f66f9 | 2,287 B | A | view · diff |
| git:20260826.0882f4a | 2026-08-26 | 0882f4a | 1,047 B | A | view · diff |
| git:20260611.2d917b0 | 2026-06-11 | 2d917b0 | 1,042 B | A | view · diff |
| git:20260503.ebd03e6 | 2026-05-03 | ebd03e6 | 1,019 B | A | view · diff |
| git:20260317.23378c6 | 2026-03-17 | 23378c6 | 563 B | A | view · diff |
| git:20260317.8377e0a | 2026-03-17 | 8377e0a | 565 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (6048 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
vellum-ai/vellum-assistant · 1,442 stars · license MIT · pushed 2026-10-20 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_kv5rog5wbz2dqjhy GET https://markdownregistry.com/api/v1/resolve?ref=vellum-ai/vellum-assistant/computer-use GET https://markdownregistry.com/api/v1/blob/ab840ea498793e330861d954445871976ae33b04061bf841ad93d7f2949ae0a9
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
More from vellum-ai/vellum-assistant
Every file in vellum-ai/vellum-assistant