A guided workflow for analysing brain-related data from the UK Biobank, a large biomedical research study, when the data is already available locally. It helps choose and coordinate downstream statistical or machine-learning analyses.

Use it to study neurological outcomes, cognitive traits, brain-MRI measurements, subgroup differences, mediation, sensitivity, survival, or predictive models.

It clarifies what kind of research question and analysis method fit the available data. It does not download UK Biobank data or provide a workflow for obtaining access.

ukb-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 ukb-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/ukb-skill/github.svg)](https://agentmods.dev/skills/cuhk-aim-group/neuroclaw/ukb-skill)

Your own site

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

Per session 83 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 3,347 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	$0.00083	$0.03347
Opus 5	$0.00042	$0.01673
Sonnet 5	$0.00017	$0.00669
Haiku 4.5	$0.00008	$0.00335

Measured 9d ago against content hash dc39a35eb60e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

ukb-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 9d ago.

The scan reads SKILL.md. This mod also ships 4 executable files (scripts/build_ukb_survival.py, scripts/extract_ukb_cases.py, scripts/extract_ukb_phenotype.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/ukb-skill/SKILL.md · 310 lines

How it starts

The opening of the file, as written. The whole thing — 310 lines — stays where its author put it; the contents beside it link to each section on GitHub.

UKB Skill (Dataset Layer)

Overview

ukb-skill is the NeuroClaw analysis-layer skill for brain-focused UK Biobank downstream research.

This skill is designed for users who already have local UK Biobank tables, derived phenotype tables, or neuroimaging-derived feature matrices and want to run downstream statistical or machine learning analyses.

It follows the NeuroClaw hierarchical design principles:

This skill describes WHAT needs to be analyzed and which existing skill should handle each part.
It contains no RAP download workflow and no cloud export instructions.
It contains no direct implementation code and no direct shell commands.
All concrete execution should be delegated through claw-shell and related downstream skills.

Core workflow (never bypassed):

Confirm that the user already has accessible UK Biobank-derived local data.
Identify the research target: neurological endpoint, cognitive phenotype, brain MRI phenotype, or predictive modeling task.
Identify the analysis type: regression, survival analysis, subgroup analysis, propensity score analysis, mediation analysis, sensitivity analysis, machine learning, visualization, or manuscript support.
Check the minimum required columns, files, and assumptions.
Generate a numbered execution plan with outputs, delegated skills, and risks.
Present the plan and wait for explicit user confirmation ("YES" / "execute" / "proceed").
On confirmation, delegate all execution through claw-shell and the target skills.

Research use only.

Scope Boundaries

Included

Brain-related UK Biobank disease endpoint analysis using existing tables
Cognitive and brain-health phenotype modeling
Brain MRI derived phenotype association analysis
Survival / logistic / linear modeling on UK Biobank-derived tables
Sensitivity analysis, subgroup analysis, propensity score analysis, and mediation analysis
Machine learning on brain-related tabular or derived neuroimaging features
Visualization and manuscript-ready result summarization

Read the full file on GitHub · 310 lines

Files

What ships with it

4 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.

9d ago First seen · 310 lines · 83 tokens per session scan A dc39a35eb60e

Subscribe to this mod's changes

ukb-skill is a skill published in the GitHub repository CUHK-AIM-Group/NeuroClaw (85 stars, last pushed 6d ago), licensed MIT. It adds 83 tokens to every session and 3,347 once invoked, about $0.0004 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 2026-09-03.

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