asl-skill SKILL.md skillA
asl-skill from cuhk-aim-group/neurodiscovery is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add cuhk-aim-group/neurodiscovery/asl-skill@git:20261023.f74c2bdPins git:20261023.f74c2bd in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- cuhk-aim-group/neurodiscovery
- Path
skills/asl-skill/SKILL.md- Versions recorded
- 2
- Latest version
- git:20261023.f74c2bd, committed Oct 23, 2026
- First version recorded
- May 6, 2026
- Size
- 7,517 bytes
- Repository stars
- 93
- License
- MIT
Use this skill whenever the user wants to process Arterial Spin Labeling (ASL) perfusion MRI data including CBF (cerebral blood flow) quantification, ASL preprocessing (motion correction, partial volume correction, M0 normalization), or ASL-based brain perfusion analysis. Triggers include: 'ASL', 'ASL processing', 'CBF', 'cerebral blood flow', 'perfusion MRI', 'arterial spin labeling', 'pCASL', 'CASL', 'PASL', or any request involving ASL perfusion data.
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
# ASL Skill (Modality Layer)
## Overview
`asl-skill` is the NeuroRuntime **modality-layer** interface skill responsible for all Arterial Spin Labeling (ASL) perfusion MRI data processing tasks.
It strictly follows the NeuroRuntime hierarchical design principles:
- This skill **only describes WHAT needs to be done** and **which tool skill to delegate to**.
- It contains **no implementation code or concrete commands**.
- All concrete execution is delegated to existing base/tool skills: `fsl-tool`, `nibabel-skill`, and `claw-shell`.
- Companion scripts in `scripts/` provide reference implementations for CBF quantification.
**Core workflow (never bypassed):**
1. Identify input ASL data and labeling strategy (pCASL, CASL, or PASL).
2. Ensure T1w structural data is available (via `smri-skill` if not yet processed).
3. Generate a **numbered execution plan** clearly stating WHAT needs to be done and which tool skill will handle each step.
4. Present the full plan, estimated runtime, resource requirements, and risks to the user and wait for explicit confirmation ("YES" / "execute" / "proceed").
5. On confirmation, delegate every step to the appropriate skill via `claw-shell`.
…Read the whole file at its exact version.
How to install
mdr add cuhk-aim-group/neurodiscovery/asl-skill@sha256:645c72426033231fThe line at the top of this page pins the label git:20261023.f74c2bd, 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_g4akg6t5cvstu2qf)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between May 6, 2026 and Oct 23, 2026, about one every 170 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261023.f74c2bd latest | 2026-10-23 | f74c2bd | 7,517 B | A | view · diff |
| git:20260506.f8d0216 | 2026-05-06 | f8d0216 | 7,511 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 (7517 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
cuhk-aim-group/neurodiscovery · 93 stars · license MIT · pushed 2026-10-23 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_g4akg6t5cvstu2qf GET https://markdownregistry.com/api/v1/resolve?ref=cuhk-aim-group/neurodiscovery/asl-skill GET https://markdownregistry.com/api/v1/blob/645c72426033231faab25ebeada99f850864f302dcf87d7fd549ae8705f34464
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.