hi-c-matrix-normalization-pipeline-setup

hi-c-matrix-normalization-pipeline-setup is a skill for Claude Code, Codex from HolobiomicsLab/asb-skill-collections. It costs 62 tokens per session (1,738 once invoked), scanned A, original, Apache-2.0.

A setup step that installs the iced Python module so HiC-Pro can normalize Hi-C contact matrices. Normalization balances contact counts and corrects systematic measurement bias.

In plain words
What is it for?
Use it before HiC-Pro normalization when aligned Hi-C reads are stored in SAM or BAM files and are not already in an environment that includes iced.
Why use it?
HiC-Pro may need iced separately because it is no longer included with the pipeline. Without this dependency, the normalization stage may not run.

Skill for Claude CodeCodex

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

Good fit Use it before HiC-Pro normalization when aligned Hi-C reads are stored in SAM or BAM files and are not already in an environment that includes iced.

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Install with agentmods
npx agentmods add skills/holobiomicslab/asb-skill-collections/hi-c-matrix-normalization-pipeline-setup
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 HolobiomicsLab/asb-skill-collections --skill hi-c-matrix-normalization-pipeline-setup
Clone the repo
git clone --depth 1 https://github.com/HolobiomicsLab/asb-skill-collections

Made for: Claude Code, Codex.

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Per session 62 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,738 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00062 $0.01738
Opus 5 $0.00031 $0.00869
Sonnet 5 $0.00012 $0.00348
Haiku 4.5 $0.00006 $0.00174

Measured 9d ago against content hash 7c1caa1e45d5, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

hi-c-matrix-normalization-pipeline-setup 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.

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.

collections/epigenomics/v1/skills/hi-c-matrix-normalization-pipeline-setup/SKILL.md · 109 lines

How it starts

The opening of the file, as written. The whole thing — 109 lines — stays where its author put it; the contents beside it link to each section on GitHub.

hi-c-matrix-normalization-pipeline-setup

Summary

Install and configure the iced Python module and its dependencies to enable iterative correction and eigenvalue decomposition (ICE) normalization of raw Hi-C contact matrices within the HiC-Pro pipeline. This skill ensures that the normalization stage can correct biases and balance contact frequency matrices after read alignment and filtering.

When to use

Before running HiC-Pro's normalization stage on aligned Hi-C BAM files. Specifically, when you have SAM/BAM-formatted aligned Hi-C reads that need bias correction and matrix balancing to produce normalized contact maps suitable for downstream chromatin structure analysis. The iced module is a required dependency that no longer ships with HiC-Pro source code and must be independently installed.

When NOT to use

  • If you are using a pre-built HiC-Pro container (Docker, Singularity, or conda environment) that already includes iced; the dependency is already resolved.
  • If your downstream analysis does not require contact matrix normalization or uses an alternative normalization method (e.g., external normalization tools or raw contact frequencies).
  • If Python < 3.7 is your only available interpreter; iced requires Python >3.7 and will not function on Python 2.x.

Inputs

  • System Python (>3.7) installation
  • iced module source code (from GitHub repository)
  • System package manager or pip environment

Outputs

  • Installed iced Python module with accessible API
  • Installed numpy (≥1.18.1) and scipy (≥1.4.1) dependencies
  • Configuration file documenting PYTHONPATH and iced installation location

How to apply

Verify that Python (>3.7) is available on your system. Clone or download the iced module from https://github.com/hiclib/iced and install it along with transitive dependencies (numpy ≥1.18.1, scipy ≥1.4.1) using pip or the iced setup.py installer. Test the installation by importing the module in a Python interpreter and confirming version/API availability. Document the iced installation path and set PYTHONPATH environment variables in a configuration file that will be sourced by downstream HiC-Pro normalization steps. This ensures that when HiC-Pro calls the iced normalization functions, the module is discoverable and its dependencies are met.

Read the full file on GitHub · 109 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. 9d ago First seen · 109 lines · 62 tokens per session scan A 7c1caa1e45d5

Subscribe to this mod's changes

hi-c-matrix-normalization-pipeline-setup is a skill published in the GitHub repository HolobiomicsLab/asb-skill-collections (15 stars, last pushed yesterday), licensed Apache-2.0. It adds 62 tokens to every session and 1,738 once invoked, about $0.0003 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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