tf-binding-site-classification

tf-binding-site-classification is a skill for Claude Code, Codex from HolobiomicsLab/asb-skill-collections. It costs 72 tokens per session (2,154 once invoked), scanned A, original, Apache-2.0.

A bioinformatics workflow for classifying transcription factor binding at known DNA motif sites from ATAC-seq data. It uses footprint scores and a motif database to label sites as bound or unbound and estimate confidence.

In plain words
What is it for?
Use it to compare transcription factor binding between treatments, controls, or developmental time points and to support regulatory-network analysis.
Why use it?
It turns continuous chromatin-accessibility signals into binding states that are easier to compare across samples or conditions. It is not intended for low-depth ATAC-seq or ChIP-seq data.

Skill for Claude CodeCodex

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

Good fit Use it to compare transcription factor binding between treatments, controls, or developmental time points and to support regulatory-network analysis.

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Install with agentmods
npx agentmods add skills/holobiomicslab/asb-skill-collections/tf-binding-site-classification
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 tf-binding-site-classification
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 tf-binding-site-classification

README.md
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Your own site
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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 tf-binding-site-classification

Your own site · 80×15
<a href="https://agentmods.dev/skills/holobiomicslab/asb-skill-collections/tf-binding-site-classification"><img src="https://agentmods.dev/badge/skills/holobiomicslab/asb-skill-collections/tf-binding-site-classification.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 72 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,154 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 $0.00072 $0.02154
Opus 5 $0.00036 $0.01077
Sonnet 5 $0.00014 $0.00431
Haiku 4.5 $0.00007 $0.00215

Measured 6d ago against content hash dd7d1b01392a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

tf-binding-site-classification 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/tf-binding-site-classification/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.

Reconstruct the transcription factor occupancy prediction step that classifies TF binding from footprint scores at motif sites

Summary

Classify transcription factor binding sites as bound or unbound by comparing footprint depletion scores at known motif locations across ATAC-seq conditions, using TOBIAS BINDetect to generate per-motif occupancy predictions and differential binding metrics. This skill bridges nucleosome-free chromatin signal analysis to discrete binding state estimates required for regulatory network interpretation.

When to use

You have aligned ATAC-seq BAM files, corrected Tn5 insertion bias and computed footprint scores (via TOBIAS ATACorrect and ScoreBigwig), a motif database in JASPAR or compatible format, and you need to assign occupancy states (bound/unbound) and confidence scores at specific TF binding sites to compare binding changes across experimental conditions (e.g., early embryo development timepoints, treatment vs. control).

When NOT to use

  • Input is single-end ATAC-seq with very low read depth (<5M reads per sample); footprints will be too noisy to reliably detect binding occupancy.
  • You are analyzing ChIP-seq or CUT&RUN data instead of ATAC-seq; this skill is specifically designed for footprint-based inference from transposase insertion patterns and will not apply to antibody-enriched chromatin.
  • Motif database is not in a TOBIAS-compatible format (JASPAR, TRANSFAC, MEME); format conversion via TOBIAS FormatMotifs is required first.
  • Footprint scores have not been corrected for Tn5 insertion bias; uncorrected scores will produce systematic false positives at sequence-biased sites unrelated to protein binding.

Inputs

  • Aligned ATAC-seq BAM file(s) with corrected Tn5 cutsites
  • Footprint score bigWig file(s) (output from TOBIAS ScoreBigwig)
  • Motif database in JASPAR or TRANSFAC format (PWM file)
  • Peak/open chromatin regions in BED format (optional, for restricting analysis scope)
  • Sample metadata or condition labels (for comparing across treatments/timepoints)

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. 6d ago First seen · 109 lines · 72 tokens per session scan A dd7d1b01392a

Subscribe to this mod's changes

tf-binding-site-classification is a skill published in the GitHub repository HolobiomicsLab/asb-skill-collections (15 stars, last pushed 2d ago), licensed Apache-2.0. It adds 72 tokens to every session and 2,154 once invoked, about $0.0004 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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