hi-c-fastq-read-preprocessing

hi-c-fastq-read-preprocessing is a skill for Claude Code, Codex from HolobiomicsLab/asb-skill-collections. It costs 68 tokens per session (1,775 once invoked), scanned A, original, Apache-2.0.

A preprocessing workflow that turns raw Hi-C sequencing reads into contact maps. Hi-C contact maps show which genome regions interact in three-dimensional space and can be saved as .hic files.

In plain words
What is it for?
Use it with raw paired-end Hi-C FASTQ files to prepare maps for finding loops, topologically associating domains (TADs), or other three-dimensional genome patterns.
Why use it?
Raw FASTQ files contain sequencing reads, not an analysis-ready map. The workflow organizes and processes those reads so genome structure features can be studied.

Skill for Claude CodeCodex

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

Good fit Use it with raw paired-end Hi-C FASTQ files to prepare maps for finding loops, topologically associating domains (TADs), or other three-dimensional genome patterns.

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Install with agentmods
npx agentmods add skills/holobiomicslab/asb-skill-collections/hi-c-fastq-read-preprocessing
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-fastq-read-preprocessing
Clone the repo
git clone --depth 1 https://github.com/HolobiomicsLab/asb-skill-collections

Made for: Claude Code, Codex.

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README.md
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<a href="https://agentmods.dev/skills/holobiomicslab/asb-skill-collections/hi-c-fastq-read-preprocessing"><img src="https://agentmods.dev/badge/skills/holobiomicslab/asb-skill-collections/hi-c-fastq-read-preprocessing.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 68 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,775 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 $0.00068 $0.01775
Opus 5 $0.00034 $0.00888
Sonnet 5 $0.00014 $0.00355
Haiku 4.5 $0.00007 $0.00178

Measured 9d ago against content hash 82b7d51a06ab, 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-fastq-read-preprocessing 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-fastq-read-preprocessing/SKILL.md · 104 lines

How it starts

The opening of the file, as written. The whole thing — 104 lines — stays where its author put it; the contents beside it link to each section on GitHub.

hi-c-fastq-read-preprocessing

Summary

Preprocess raw Hi-C FASTQ files through the Juicer pipeline to generate normalized Hi-C contact maps at kilobase resolution. This skill transforms raw sequencing reads into structured Hi-C interaction matrices suitable for downstream 3D genomics analysis.

When to use

Apply this skill when you have raw Hi-C FASTQ files from a Hi-C wet-lab protocol and need to convert them into processed Hi-C contact maps (.hic files) for loop detection, TAD identification, or 3D structure inference. Use when starting from deposited public Hi-C datasets (e.g., from GEO or SRA) or newly sequenced Hi-C libraries.

When NOT to use

  • Input FASTQ files are from non-Hi-C protocols (e.g., RNA-seq, ChIP-seq, single-cell RNA-seq) — use appropriate pipelines for those modalities.
  • Contact matrices are already in processed .hic or matrix format — skip directly to feature annotation or downstream analysis tools.
  • Restriction enzyme used is not pre-configured in Juicer — manual enzyme coordinate file creation may be required, which is outside standard preprocessing scope.

Inputs

  • Hi-C raw FASTQ files (paired-end sequencing reads)
  • Reference genome FASTA file
  • Restriction enzyme site coordinates file
  • Chromosome sizes file (chrom.sizes)

Outputs

  • .hic contact map file (normalized Hi-C interaction matrix)
  • Merged alignment file (merged_nodups)
  • Pipeline statistics and QC metrics

How to apply

Clone the Juicer repository (selecting either stable release 1.6 or development version Juicer 2 based on your requirements) and configure it with the appropriate reference genome, restriction enzyme used in the Hi-C protocol, and computational resources (thread count and memory allocation matching your cluster capabilities). Place raw FASTQ files in the designated input directory and execute the Juicer pipeline via juicer.sh with the selected genome ID and restriction site parameters. The pipeline performs sequential read alignment (via BWA), contact matrix construction, and normalization to produce a final .hic output file. Verify completion by checking that the .hic file was generated successfully and contains valid contact frequency data at the expected resolution.

Read the full file on GitHub · 104 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 · 104 lines · 68 tokens per session scan A 82b7d51a06ab

Subscribe to this mod's changes

hi-c-fastq-read-preprocessing is a skill published in the GitHub repository HolobiomicsLab/asb-skill-collections (15 stars, last pushed yesterday), licensed Apache-2.0. It adds 68 tokens to every session and 1,775 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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