positional-distribution-profile-aggregation-and-visualization

positional-distribution-profile-aggregation-and-visualization is a skill for Claude Code, Codex from HolobiomicsLab/asb-skill-collections. It costs 66 tokens per session (1,961 once invoked), scanned A, original, Apache-2.0.

A scientific analysis skill for examining ATAC-seq data around transcription factor binding sites. ATAC-seq measures how accessible DNA is, and a footprint is a local drop in insertions where a protein is bound.

In plain words
What is it for?
It aggregates and displays Tn5 insertion counts around classified sites to reveal binding footprints and compare bound with unbound sites.
Why use it?
It helps distinguish genuine protein binding from sites identified only because their DNA sequence matches a motif.

Skill for Claude CodeCodex

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

Good fit It aggregates and displays Tn5 insertion counts around classified sites to reveal binding footprints and compare bound with unbound sites.

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Install with agentmods
npx agentmods add skills/holobiomicslab/asb-skill-collections/positional-distribution-profile-aggregation-and-visualization
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 positional-distribution-profile-aggregation-and-visualization
Clone the repo
git clone --depth 1 https://github.com/HolobiomicsLab/asb-skill-collections

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 positional-distribution-profile-aggregation-and-visualization

README.md
[![agentmods](https://agentmods.dev/badge/skills/holobiomicslab/asb-skill-collections/positional-distribution-profile-aggregation-and-visualization/github.svg)](https://agentmods.dev/skills/holobiomicslab/asb-skill-collections/positional-distribution-profile-aggregation-and-visualization)
Your own site
<a href="https://agentmods.dev/skills/holobiomicslab/asb-skill-collections/positional-distribution-profile-aggregation-and-visualization"><img src="https://agentmods.dev/badge/skills/holobiomicslab/asb-skill-collections/positional-distribution-profile-aggregation-and-visualization/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 positional-distribution-profile-aggregation-and-visualization

Your own site · 80×15
<a href="https://agentmods.dev/skills/holobiomicslab/asb-skill-collections/positional-distribution-profile-aggregation-and-visualization"><img src="https://agentmods.dev/badge/skills/holobiomicslab/asb-skill-collections/positional-distribution-profile-aggregation-and-visualization.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 66 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,961 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 $0.00066 $0.01961
Opus 5 $0.00033 $0.00981
Sonnet 5 $0.00013 $0.00392
Haiku 4.5 $0.00007 $0.00196

Measured 6d ago against content hash 92f166ba9e51, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

positional-distribution-profile-aggregation-and-visualization 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 6d 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/positional-distribution-profile-aggregation-and-visualization/SKILL.md · 106 lines

How it starts

The opening of the file, as written. The whole thing — 106 lines — stays where its author put it; the contents beside it link to each section on GitHub.

positional-distribution-profile-aggregation-and-visualization

Summary

Aggregate and visualize Tn5 insertion counts across fixed-width genomic windows flanking regulatory sites (e.g., transcription factor binding motifs) to reveal characteristic footprint patterns—depletion of insertions at protein-bound sites versus uniform accessibility at unbound sites. This skill is essential for footprinting analysis in ATAC-seq to distinguish bound from unbound regulatory elements.

When to use

Apply this skill when you have ATAC-seq BAM alignments with classified motif sites (bound vs. unbound based on chromatin accessibility or binding thresholds) and wish to detect and visualize the characteristic Tn5 insertion depletion signal (footprints) around transcription factor binding sites. Use it to validate that your binding site classification reflects genuine protein occupancy rather than sequence motif occurrence alone.

When NOT to use

  • Input BAM file has not been deduplicated or quality-filtered; raw, uncorrected ATAC-seq data with high technical bias will obscure genuine footprints.
  • Motif site classification is based on sequence matching alone without chromatin accessibility or binding evidence; unanchored motif predictions do not reliably partition bound from unbound sites.
  • Genomic windows are too narrow (< ±40 bp) to capture the full footprint width, or too wide (> ±200 bp) to resolve the depletion peak clearly.

Inputs

  • ATAC-seq BAM file with aligned Tn5 insertion reads (corrected for Tn5 bias if available)
  • BED file of motif site coordinates classified as bound or unbound
  • Reference genome (FASTA) if performing bias correction beforehand
  • Peak coordinates (BED) defining open chromatin regions

Outputs

  • Tabular matrix of Tn5 insertion counts by genomic position and site class (bound/unbound)
  • Aggregated insertion profile plots (line plots or heatmaps) for bound vs. unbound sites
  • Positional statistics (mean, standard deviation) per window position and site class
  • Footprint score or depletion depth metrics quantifying the signal difference

Read the full file on GitHub · 106 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. 6d ago First seen · 106 lines · 66 tokens per session scan A 92f166ba9e51

Subscribe to this mod's changes

positional-distribution-profile-aggregation-and-visualization is a skill published in the GitHub repository HolobiomicsLab/asb-skill-collections (15 stars, last pushed yesterday), licensed Apache-2.0. It adds 66 tokens to every session and 1,961 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 2026-09-06.

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