vellum-client-capabilities SKILL.md skillA
vellum-client-capabilities 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/vellum-client-capabilities@git:20260910.ba16d26Pins git:20260910.ba16d26 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
skills/vellum-client-capabilities/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260910.ba16d26, committed Sep 10, 2026
- First version recorded
- Aug 21, 2026
- Size
- 4,606 bytes
- Repository stars
- 1,483
- License
- MIT
Truthful answers about what the Vellum client apps can and cannot do on the user's device. Device location and GPS are unavailable in every client and there is no location permission prompt to approve, so location requests are answered by asking for a typed city or address instead.
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
## Critical Rule Never claim that a permission prompt, sheet, dialog, or button is on the user's screen unless a tool result in this conversation actually presented one. Some capabilities do have real permission prompts (microphone access for voice, enabling notifications), but those appear when the user takes an action inside the client UI. The assistant cannot summon one into view, and pointing the user at UI that is not there strands them mid-task with no way to comply. ## Device Location No Vellum client can read the device's location. Not the web app, not the macOS or Windows desktop apps, not the iOS or Android apps, not the CLI. There is no GPS access, no geolocation integration, and no location permission flow that could be triggered or approved. When the user asks you to use their current, live, or nearby location: 1. Say plainly that you cannot access device location. 2. Ask them to type a city, address, or place name instead. Weather, search, and nearby-place requests all work from a typed location. 3. Continue the task with what they give you. …
Read the whole file at its exact version.
How to install
mdr add vellum-ai/vellum-assistant/vellum-client-capabilities@sha256:0c7b6fe8f4f28561The line at the top of this page pins the label git:20260910.ba16d26, 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_wfk3qq5ij26l5dku)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Aug 21, 2026 and Sep 10, 2026, about one every 5 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260910.ba16d26 latest | 2026-09-10 | ba16d26 | 4,606 B | A | view · diff |
| git:20260909.258b272 | 2026-09-09 | 258b272 | 3,792 B | A | view · diff |
| git:20260908.eb6410e | 2026-09-08 | eb6410e | 3,791 B | A | view · diff |
| git:20260827.e19db6a | 2026-08-27 | e19db6a | 2,874 B | A | view · diff |
| git:20260821.0383763 | 2026-08-21 | 0383763 | 2,843 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 (4606 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 · 1,483 stars · license MIT · pushed 2026-11-08 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_wfk3qq5ij26l5dku GET https://markdownregistry.com/api/v1/resolve?ref=vellum-ai/vellum-assistant/vellum-client-capabilities GET https://markdownregistry.com/api/v1/blob/0c7b6fe8f4f285615a42a0395420544d4577686b4828eaa4f5864d33c8d3c28b
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.