screen-annotation SKILL.md skillA
screen-annotation 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/screen-annotation@git:20260923.158603fPins git:20260923.158603f 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/screen-annotation/SKILL.md- Versions recorded
- 8
- Latest version
- git:20260923.158603f, committed Sep 23, 2026
- First version recorded
- Sep 7, 2026
- Size
- 8,193 bytes
- Repository stars
- 1,467
- License
- MIT
Point at things on the screen the user is showing you.
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
Drawing on the screen the user is showing you, so they can go and do the
thing themselves.
This is the opposite errand from computer use. Nothing here clicks, types or
drives anything: the marks are a way of pointing while you talk, for someone
who wants to learn where a control is rather than have it operated for them.
A mark is drawn clear of what it indicates and never takes the mouse, so
what you point at stays visible and clickable the whole time.
## Requires a screen share
Marks are drawn on the frame around the surface the user is sharing with the
call. With nothing shared there is nowhere to draw, and `screen_point_at`
fails saying so. Ask them to share their screen from the call, then point.
## Say what to point at
**Prefer naming the thing for an arrow.**
`{"target": "color balance", "caption": "Click this"}`.
The name is looked up on the surface itself, which knows where its controls
actually are, and an arrow is drawn at it.
**The label, not a description of it.** What is matched is the control's own
name. Casing, spacing and punctuation are forgiven, so `Color Balance` finds
`color balance`; nothing beyond that is, so "the stabilization button" finds
…Read the whole file at its exact version.
How to install
mdr add vellum-ai/vellum-assistant/screen-annotation@sha256:47f5995f55ce17baThe line at the top of this page pins the label git:20260923.158603f, 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_rb6pzhnljmbkqf4h)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 8 versions of this file, between Sep 7, 2026 and Sep 23, 2026, about one every 2 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260923.158603f latest | 2026-09-23 | 158603f | 8,193 B | A | view · diff |
| git:20260922.c4d457d | 2026-09-22 | c4d457d | 7,976 B | A | view · diff |
| git:20260915.1d2df4e | 2026-09-15 | 1d2df4e | 7,758 B | A | view · diff |
| git:20260910.4514865 | 2026-09-10 | 4514865 | 7,755 B | A | view · diff |
| git:20260909.9939eda | 2026-09-09 | 9939eda | 7,352 B | A | view · diff |
| git:20260909.24749ab | 2026-09-09 | 24749ab | 7,000 B | A | view · diff |
| git:20260909.201657f | 2026-09-09 | 201657f | 5,200 B | A | view · diff |
| git:20260907.119baa5 | 2026-09-07 | 119baa5 | 3,643 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 (8193 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 · 1,467 stars · license MIT · pushed 2026-10-29 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_rb6pzhnljmbkqf4h GET https://markdownregistry.com/api/v1/resolve?ref=vellum-ai/vellum-assistant/screen-annotation GET https://markdownregistry.com/api/v1/blob/47f5995f55ce17ba316a16d57158cf0b6b8a79cdff0854b384338e770b22fbbb
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.
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