chip-seq

chip-seq is a skill for Claude Code, Codex from zongtingwei/Bioclaw_Skills_Hub. It costs 32 tokens per session (1,281 once invoked), scanned A, original, MIT.

A workflow for ChIP-seq, a sequencing method used to find where DNA-associated proteins or chemical marks bind across the genome. It identifies these binding regions and supports follow-up analysis.

In plain words
What is it for?
It helps call peaks, create genome-browser signal tracks, annotate peaks, study DNA sequence motifs, and review differences between samples when replicates are available.
Why use it?
It brings the main processing and interpretation steps together, including choices for narrow or broad binding regions and checks across biological repeats.

Skill for Claude CodeCodex

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

Good fit It helps call peaks, create genome-browser signal tracks, annotate peaks, study DNA sequence motifs, and review differences between samples when replicates are available.

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Install with agentmods
npx agentmods add skills/zongtingwei/bioclaw_skills_hub/chip-seq
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 zongtingwei/Bioclaw_Skills_Hub --skill chip-seq
Clone the repo
git clone --depth 1 https://github.com/zongtingwei/Bioclaw_Skills_Hub

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 chip-seq

README.md
[![agentmods](https://agentmods.dev/badge/skills/zongtingwei/bioclaw_skills_hub/chip-seq/github.svg)](https://agentmods.dev/skills/zongtingwei/bioclaw_skills_hub/chip-seq)
Your own site
<a href="https://agentmods.dev/skills/zongtingwei/bioclaw_skills_hub/chip-seq"><img src="https://agentmods.dev/badge/skills/zongtingwei/bioclaw_skills_hub/chip-seq/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 chip-seq

Your own site · 80×15
<a href="https://agentmods.dev/skills/zongtingwei/bioclaw_skills_hub/chip-seq"><img src="https://agentmods.dev/badge/skills/zongtingwei/bioclaw_skills_hub/chip-seq.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 32 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,281 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.
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 $0.00032 $0.01281
Opus 5 $0.00016 $0.00641
Sonnet 5 $0.00006 $0.00256
Haiku 4.5 $0.00003 $0.00128

Measured 12d ago against content hash 7de02c2445be, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

chip-seq 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 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.

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/epigenomics-and-regulation/chip-seq/SKILL.md · 171 lines

How it starts

The opening of the file, as written. The whole thing — 171 lines — stays where its author put it; the contents beside it link to each section on GitHub.

ChIP Seq

Version Compatibility

Reference examples assume:

  • macs3 3.0+
  • samtools 1.18+
  • deepTools 3.5+

Before using commands, verify the installed environment:

  • CLI: macs3 --version, samtools --version, bamCoverage --version
  • If flags differ, inspect --help and adapt rather than forcing the example unchanged.

Overview

Use this skill for:

  • narrow or broad peak calling
  • input-normalized signal tracks
  • peak annotation
  • motif follow-up
  • differential binding review when replicates exist

When To Use This Skill

  • the user has aligned ChIP and optional input BAM files
  • the deliverable includes peaks, browser tracks, or motif results
  • the assay is TF ChIP or histone-mark ChIP and needs standard peak-centric processing

Quick Route

  • TF or narrow marks: use narrow peak mode first.
  • H3K27me3, H3K36me3, or other broad marks: use --broad.
  • Paired-end BAM: prefer -f BAMPE.
  • No input control: still possible, but report the limitation explicitly.

Progressive Disclosure

Prerequisites

Requirement Narrow TF-style Broad histone-style
usable uniquely mapped reads >= 10M >= 20M
matched input recommended yes yes
biological replicates recommended >= 2 >= 2

Expected Inputs

  • chip.bam
  • input.bam when available
  • reference genome build
  • chromosome sizes if bigWig export is needed

Expected Outputs

  • results/peaks/sample_peaks.narrowPeak or .broadPeak
  • results/peaks/sample_summits.bed
  • results/tracks/sample_treat_pileup.bw
  • results/annotation/peak_annotation.tsv
  • qc/chip_qc_summary.tsv

Starter Pattern

macs3 callpeak \
  -t chip.bam \
  -c input.bam \
  -f BAMPE \
  -g hs \
  -n sample \
  -q 0.01 \
  --outdir results/peaks

Read the full file on GitHub · 171 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.

  1. 12d ago First seen · 171 lines · 32 tokens per session scan A 7de02c2445be

Subscribe to this mod's changes

chip-seq is a skill published in the GitHub repository zongtingwei/Bioclaw_Skills_Hub (26 stars, last pushed 5mo ago), licensed MIT. It adds 32 tokens to every session and 1,281 once invoked, about $0.0002 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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