An orchestration guide for the ABCD Study, a large research dataset tracking adolescent brain development. It covers approved data access, BIDS organization, brain-imaging processing, participant information, and quality checks.

Use it to obtain approved ABCD data through the NBDC platform, organize it in BIDS format, process structural, functional, and diffusion MRI, combine participant data, and create quality-control summaries.

It coordinates the stages needed to prepare ABCD data for analysis while separating high-level planning from the tools that perform the work.

abcd-skill — Skill for Claude Code and Codex by CUHK-AIM-Group

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add CUHK-AIM-Group/NeuroClaw --skill abcd-skill

Clone the repo

git clone --depth 1 https://github.com/CUHK-AIM-Group/NeuroClaw

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/cuhk-aim-group/neuroclaw/abcd-skill/github.svg)](https://agentmods.dev/skills/cuhk-aim-group/neuroclaw/abcd-skill)

Your own site

<a href="https://agentmods.dev/skills/cuhk-aim-group/neuroclaw/abcd-skill"><img src="https://agentmods.dev/badge/skills/cuhk-aim-group/neuroclaw/abcd-skill/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/cuhk-aim-group/neuroclaw/abcd-skill"><img src="https://agentmods.dev/badge/skills/cuhk-aim-group/neuroclaw/abcd-skill.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 106 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 3,619 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits

NVIDIA SkillSpector pass 7 Sept 2026

How audits are shown

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00106	$0.03619
Opus 5	$0.00053	$0.01809
Sonnet 5	$0.00021	$0.00724
Haiku 4.5	$0.00011	$0.00362

Measured 10d ago against content hash 23e53f25a0b7, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

abcd-skill scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.

The scan reads SKILL.md. This mod also ships 3 executable files (scripts/abcd_qc_summary.py, scripts/extract_abcd_phenotype.py, scripts/reorganize_abcd.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/abcd-skill/SKILL.md · 316 lines

How it starts

The opening of the file, as written. The whole thing — 316 lines — stays where its author put it; the contents beside it link to each section on GitHub.

ABCD Skill (Dataset-Orchestration Layer)

Overview

abcd-skill is the NeuroClaw orchestration skill for the ABCD Study (Adolescent Brain Cognitive Development) dataset.

It coordinates a fixed three-phase workflow:

Obtain approved ABCD data from the NBDC Data Sharing Platform.
Prepare and validate BIDS-style data organization for downstream processing.
Delegate modality pipelines to smri-skill, fmri-skill, and dwi-skill.

It also provides phenotype extraction and QC integration paths:

Extract and merge ABCD phenotype tables (mental health, cognition, substance use, etc.).
Generate per-subject QC summaries with exclusion lists.

This skill follows NeuroClaw hierarchy:

Defines WHAT to do, not low-level implementation details.
Does not execute direct shell commands itself.
Delegates all execution via claw-shell to base/tool skills.

Research use only.

Download Stage (Mandatory First Step)

Source

Current ABCD data is distributed through the NIH Brain Development Cohorts (NBDC) Data Sharing Platform:

Access instructions: https://docs.abcdstudy.org/latest/usage/access.html
Data access process: https://www.nbdc-datahub.org/data-access-process
Download applications: Data Exploration and Analysis Portal (DEAP) or the NBDC Data Access Platform
Access requires an approved NBDC Data Use Certification (DUC), an NIH-recognized institutional affiliation, institutional signing-official approval, and an active Federalwide Assurance (FWA).

Beginning with ABCD release 6.0, current releases are no longer held at NDA. Use NDA only when the task explicitly targets a legacy release that remains there.

Supported ABCD Data Packages

ABCD Study 7.0 (current release as of 2026-08-25): includes imaging and non-imaging data documented by NBDC
Imaging data: T1w, T2w, dMRI, rs-fMRI, task-fMRI (NIfTI format)
Phenotype data: tab-delimited files (abcd_p_tab, mental_health, cbcl, etc.)
Derived imaging data: release-specific derived packages when available through NBDC

Read the full file on GitHub · 316 lines

Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

10d ago First seen · 316 lines · 106 tokens per session scan A 23e53f25a0b7

Subscribe to this mod's changes

abcd-skill is a skill published in the GitHub repository CUHK-AIM-Group/NeuroClaw (84 stars, last pushed 3d ago), licensed MIT. It adds 106 tokens to every session and 3,619 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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