conn-tool

conn-tool is a skill for Claude Code, Codex from CUHK-AIM-Group/NeuroClaw. It costs 112 tokens per session (1,871 once invoked), scanned A, original, MIT.

A workflow guide for the CONN Toolbox, a MATLAB and SPM program used to study connections between brain regions from functional MRI data.

In plain words
What is it for?
It supports ROI-to-ROI, seed-to-voxel, ICA, PPI, gPPI, and DCM connectivity analyses, including project setup and review of resulting maps and matrices.
Why use it?
It helps set up the required software, check that the brain-imaging data is ready, and organize the analysis before anything is run.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit It supports ROI-to-ROI, seed-to-voxel, ICA, PPI, gPPI, and DCM connectivity analyses, including project setup and review of resulting maps and matrices.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/cuhk-aim-group/neuroclaw/conn-tool
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 conn-tool
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.

agentmods badge for conn-tool

README.md
[![agentmods](https://agentmods.dev/badge/skills/cuhk-aim-group/neuroclaw/conn-tool/github.svg)](https://agentmods.dev/skills/cuhk-aim-group/neuroclaw/conn-tool)
Your own site
<a href="https://agentmods.dev/skills/cuhk-aim-group/neuroclaw/conn-tool"><img src="https://agentmods.dev/badge/skills/cuhk-aim-group/neuroclaw/conn-tool/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.

agentmods 80×15 button for conn-tool

Your own site · 80×15
<a href="https://agentmods.dev/skills/cuhk-aim-group/neuroclaw/conn-tool"><img src="https://agentmods.dev/badge/skills/cuhk-aim-group/neuroclaw/conn-tool.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 112 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,871 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Excessive Agency · line 103
    Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.
    Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00112 $0.01871
Opus 5 $0.00056 $0.00936
Sonnet 5 $0.00022 $0.00374
Haiku 4.5 $0.00011 $0.00187

Measured 12d ago against content hash 928fd021723e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

conn-tool scanned grade A with 1 finding 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 12d ago.

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.

Runs shell commandslowCapability

Expected in a hook, worth knowing in a rule or an instructions file.

subprocess.run(cmd, check=True)
skills/conn-tool/SKILL.md · 180 lines

How it starts

The opening of the file, as written. The whole thing — 180 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CONN Tool

Overview

CONN is a MATLAB/SPM-based toolbox for comprehensive functional and effective connectivity analysis. It excels at ROI-to-ROI, seed-to-voxel, ICA-based network analysis, and psychophysiological interaction (PPI/gPPI) as well as Dynamic Causal Modeling (DCM).

This skill serves as the NeuroClaw interface-layer wrapper for the CONN Toolbox and strictly follows the hierarchical design:

  1. Check whether CONN Toolbox and dependencies (MATLAB + SPM) are installed.
  2. If missing → invoke dependency-planner to generate a safe installation plan.
  3. Verify input data (typically preprocessed BOLD from fmriprep-tool or hcppipeline-tool).
  4. Generate a clear, numbered execution plan with exact commands, project setup, and analysis steps.
  5. Present the plan and wait for explicit user confirmation (“YES” / “execute” / “proceed”).
  6. On confirmation → delegate the entire CONN project setup and analysis to claw-shell.
  7. After completion, summarize connectivity matrices, statistical maps, and suggest next steps (e.g., visualization or paper-writing).

Research use only.

Quick Reference

Task What needs to be done Delegate to which tool skill Expected output
Project setup Create new CONN project from preprocessed data claw-shell conn_*.mat project file
ROI definition & extraction Define ROIs from atlas or seed regions claw-shell ROI time series
Functional connectivity (ROI-to-ROI) ROI-to-ROI correlation analysis claw-shell Correlation matrices
Seed-to-voxel connectivity Seed-based whole-brain correlation claw-shell Seed-to-voxel maps
ICA network analysis Group ICA + network component extraction claw-shell ICA components + networks
PPI / gPPI Psychophysiological interaction analysis claw-shell PPI contrast maps
Effective connectivity (DCM) Dynamic Causal Modeling claw-shell DCM parameters & model comparison
Full connectivity pipeline Preprocessed data → ROI definition → connectivity → statistics claw-shell Complete CONN results + figures

Read the full file on GitHub · 180 lines

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.

  1. 12d ago First seen · 180 lines · 112 tokens per session scan A 928fd021723e

Subscribe to this mod's changes

conn-tool is a skill published in the GitHub repository CUHK-AIM-Group/NeuroClaw (85 stars, last pushed 6d ago), licensed MIT. It adds 112 tokens to every session and 1,871 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 1 finding (runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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