bio-comparative-genomics-pangenome-analysis

bio-comparative-genomics-pangenome-analysis is a skill for Claude Code, Codex from GPTomics/bioSkills. It costs 200 tokens per session (8,887 once invoked), scanned A, original, MIT.

A guide to comparing many genomes at once, including which genes are shared, missing, or variable across a species group. It also covers pangenome graphs, which represent common and differing DNA sequences.

In plain words
What is it for?
Use it to build pangenomes, divide genes into core and accessory groups, model gene-content growth, and run gene presence or absence studies.
Why use it?
It helps organize complex genome comparisons and choose suitable analysis tools. It also explains how to test whether a species has an open or closed pangenome and link gene differences to traits.

Skill for Claude CodeCodex

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

Good fit Use it to build pangenomes, divide genes into core and accessory groups, model gene-content growth, and run gene presence or absence studies.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/gptomics/bioskills/pangenome-analysis
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 GPTomics/bioSkills --skill pangenome-analysis
Clone the repo
git clone --depth 1 https://github.com/GPTomics/bioSkills

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 bio-comparative-genomics-pangenome-analysis

README.md
[![agentmods](https://agentmods.dev/badge/skills/gptomics/bioskills/pangenome-analysis/github.svg)](https://agentmods.dev/skills/gptomics/bioskills/pangenome-analysis)
Your own site
<a href="https://agentmods.dev/skills/gptomics/bioskills/pangenome-analysis"><img src="https://agentmods.dev/badge/skills/gptomics/bioskills/pangenome-analysis/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 bio-comparative-genomics-pangenome-analysis

Your own site · 80×15
<a href="https://agentmods.dev/skills/gptomics/bioskills/pangenome-analysis"><img src="https://agentmods.dev/badge/skills/gptomics/bioskills/pangenome-analysis.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 200 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 8,887 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 $0.00200 $0.08887
Opus 5 $0.00100 $0.04444
Sonnet 5 $0.00040 $0.01777
Haiku 4.5 $0.00020 $0.00889

Measured 7d ago against content hash 3c346a7fe335, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

bio-comparative-genomics-pangenome-analysis 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 7d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (examples/panaroo_bacterial_pangenome.sh), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

comparative-genomics/pangenome-analysis/SKILL.md · 498 lines

How it starts

The opening of the file, as written. The whole thing — 498 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Version Compatibility

Reference examples tested with: Panaroo 1.5.1+ (Tonkin-Hill 2020 Genome Biol 21:180), PPanGGOLiN 2.2.0+ (Gautreau 2020 PLoS Comp Biol 16:e1007732), PEPPAN 1.0.5+ (Zhou 2020 GR 30:1667), GET_HOMOLOGUES 25102023+, anvi'o 8.0+ (Eren 2021 Nat Microbiol 6:3), Minigraph-Cactus (Hickey 2024 Nat Biotech 42:663; bundled with Cactus 2.5+), PGGB 0.7.5+ (Garrison 2024 Nat Methods 21:2008), vg 1.59.0+ (Sirén J et al 2024 Nat Methods 21:2017), PanGenie 3.1.0+ (Ebler 2022 Nat Genet 54:518), PGR-TK 0.3.6+ (Chin 2023 Nat Methods 20:1213; cschin/pgr-tk; repo archived April 2026 transitioning to PANGEA), PANGEA (in development by DGI / Diploid Genomics as PGR-TK's successor for pangenome graph exploration + analysis -- check https://github.com/cschin/pgr-tk for current repository pointer), Bakta 1.10.4+ (annotation for input), Roary 3.13.0+ (DEPRECATED; use Panaroo), Scoary 1.6.16+, pyseer 1.3.11+, BUSCO 5.7+, FastTree 2.1.11+, RAxML-NG 1.2+. Python 3.10+ required for Panaroo / PPanGGOLiN.

Before using code patterns, verify installed versions match. If versions differ:

  • CLI: panaroo --version; ppanggolin --version; peppan --help; cactus-pangenome --help; pggb --version; vg version
  • Python: pip show panaroo ppanggolin

If code throws Bakta annotation incompatible, GFA file inconsistent, vg index version mismatch, the bacterial pangenome ecosystem expects consistent annotation; re-annotate all input genomes with the same tool and version before pangenome analysis.

Pangenome Analysis

"What genes are universal vs accessory across this set of genomes?" -> The pangenome is the union of all genes across a sampled group; the Tettelin partition (Tettelin 2005 PNAS 102:13950) splits it into core (universal), shell (in many but not all), cloud (rare), and species-specific (private) genes. The fundamental dichotomy is bacterial pangenome (clusters genes into orthogroups; Panaroo / PPanGGOLiN / PEPPAN for compact genomes) vs eukaryotic pangenome (graph-based; Minigraph-Cactus / PGGB / vg for haplotype-resolved sequences). The choice depends on what's being represented: bacterial pangenome captures gene-content variation in a species/genus; eukaryotic pangenome graph captures haplotype-level structural and sequence variation. Roary (Page 2015) is now deprecated in favor of Panaroo, which handles annotation-error noise that previously inflated bacterial pangenomes substantially.

Read the full file on GitHub · 498 lines

Files

What ships with it

2 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. 7d ago First seen · 498 lines · 200 tokens per session scan A 3c346a7fe335

Subscribe to this mod's changes

bio-comparative-genomics-pangenome-analysis is a skill published in the GitHub repository GPTomics/bioSkills (1,199 stars, last pushed 26d ago), licensed MIT. It adds 200 tokens to every session and 8,887 once invoked, about $0.0010 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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