ChIPseq-QC

Performs ChIP-specific biological validation. It calculates metrics unique to protein-binding assays, such as Cross-correlation (NSC/RSC) and FRiP. Use this when you have filtered the BAM file and called peaks for ChIP-seq data. Do NOT use this skill for ATAC-seq data or general alignment statistics.

181 stars

Best use case

ChIPseq-QC is best used when you need a repeatable AI agent workflow instead of a one-off prompt.

Performs ChIP-specific biological validation. It calculates metrics unique to protein-binding assays, such as Cross-correlation (NSC/RSC) and FRiP. Use this when you have filtered the BAM file and called peaks for ChIP-seq data. Do NOT use this skill for ATAC-seq data or general alignment statistics.

Teams using ChIPseq-QC should expect a more consistent output, faster repeated execution, less prompt rewriting.

When to use this skill

  • You want a reusable workflow that can be run more than once with consistent structure.

When not to use this skill

  • You only need a quick one-off answer and do not need a reusable workflow.
  • You cannot install or maintain the underlying files, dependencies, or repository context.

Installation

Claude Code / Cursor / Codex

$curl -o ~/.claude/skills/5-chipseq-qc/SKILL.md --create-dirs "https://raw.githubusercontent.com/majiayu000/claude-skill-registry/main/skills/data/5-chipseq-qc/SKILL.md"

Manual Installation

  1. Download SKILL.md from GitHub
  2. Place it in .claude/skills/5-chipseq-qc/SKILL.md inside your project
  3. Restart your AI agent — it will auto-discover the skill

How ChIPseq-QC Compares

Feature / AgentChIPseq-QCStandard Approach
Platform SupportNot specifiedLimited / Varies
Context Awareness High Baseline
Installation ComplexityUnknownN/A

Frequently Asked Questions

What does this skill do?

Performs ChIP-specific biological validation. It calculates metrics unique to protein-binding assays, such as Cross-correlation (NSC/RSC) and FRiP. Use this when you have filtered the BAM file and called peaks for ChIP-seq data. Do NOT use this skill for ATAC-seq data or general alignment statistics.

Where can I find the source code?

You can find the source code on GitHub using the link provided at the top of the page.

SKILL.md Source

# Comprehensive ChIP-seq QC Pipeline

## Overview

This skill performs a full ChIP-seq quality control analysis from aligned BAM files and peak files.

Main steps include:
- Refer to the **Inputs & Outputs** section to check inputs and build the output architecture. All the output file should located in `${proj_dir}` in Step 0.
- **Perform cross-correlation analysis** to calculate **NSC** and **RSC**.  
- **Compute FRiP (Fraction of Reads in Peaks)** using peak files and aligned BAMs.

---

## Inputs & Outputs

### Inputs

```bash
${sample}.bam # filtered bam files
${sample}.narrowPeak # or broadPeak
```

### Outputs

```bash
all_chip_qc/
    ${sample}_spp.txt
    ${sample}_crosscorr.pdf
    ${sample}_frip.txt
```

----

### Step 0: Initialize Project

Call:

- `mcp__project-init-tools__project_init`

with:

- `sample`: all
- `task`: atac_qc

The tool will:

- Create`all_chip_qc` directory.
- Return the full path of the `all_chip_qc` directory, which will be used as `${proj_dir}`.

### Step 1: Calculate Cross-Correlation Metrics (NSC, RSC)

Call:
- mcp__qc-tools__run_phantompeakqualtools
with:
- `bam_file`: Path to BAM file
- `output_dir`: ${proj_dir}/

Output: `${sample}_spp.txt`, `${sample}_crosscorr.pdf`

### Step 2: Calculate the fraction of reads falling within peak regions.

Call:
- mcp__qc-tools__calculate_frip
with:
bam_file: Path to BAM file.
peak_file: Path to Peak file (BED/narrowPeak/broadPeak).
output_dir: ${proj_dir}/

Output: `${sample}_frip.txt`

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