Genetic Variant Annotation

Genetic Variant Annotation is a skill for Claude Code, Codex from TianGzlab/OmicsClaw. It costs 4 tokens per session (4,794 once invoked), scanned A, original, Apache-2.0.

A genomics tool that adds information about DNA changes in VCF files, including affected genes, clinical importance, and predicted disease risk. VCF is a standard file format for storing detected genetic variants.

In plain words
What is it for?
Use it to filter and prioritize variants for clinical diagnosis, population studies, cancer research, and work on human, mouse, or other organisms.
Why use it?
It helps turn a list of DNA changes into information you can use to judge which variants may matter. It starts with variants already detected and does not perform variant calling.

Skill for Claude CodeCodex

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

Good fit Use it to filter and prioritize variants for clinical diagnosis, population studies, cancer research, and work on human, mouse, or other organisms.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/tiangzlab/omicsclaw/genetic-variant-annotation
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 TianGzlab/OmicsClaw --skill genetic-variant-annotation
Clone the repo
git clone --depth 1 https://github.com/TianGzlab/OmicsClaw

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 Genetic Variant Annotation

README.md
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Your own site
<a href="https://agentmods.dev/skills/tiangzlab/omicsclaw/genetic-variant-annotation"><img src="https://agentmods.dev/badge/skills/tiangzlab/omicsclaw/genetic-variant-annotation/github.svg" alt="Measured on agentmods" height="20"></a>

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agentmods 80×15 button for Genetic Variant Annotation

Your own site · 80×15
<a href="https://agentmods.dev/skills/tiangzlab/omicsclaw/genetic-variant-annotation"><img src="https://agentmods.dev/badge/skills/tiangzlab/omicsclaw/genetic-variant-annotation.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 4 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,794 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 $0.00004 $0.04794
Opus 5 $0.00002 $0.02397
Sonnet 5 $0.00001 $0.00959
Haiku 4.5 $0.00000 $0.00479

Measured 9d ago against content hash b470d3cf5b6f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

Genetic Variant Annotation 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 9d ago.

The scan reads SKILL.md. This mod also ships 16 executable files (scripts/annotate_genes.py, scripts/export_results.py, scripts/filter_variants.py, …), 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.

knowledge_base/genetic-variant-annotation/SKILL.md · 446 lines

How it starts

The opening of the file, as written. The whole thing — 446 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Genetic Variant Annotation

Annotate genomic variants in VCF files with functional effects, clinical significance, and pathogenicity predictions.

When to Use This Skill

Use this skill when you have:

  • VCF files from variant calling (GATK, bcftools, FreeBayes, etc.)
  • ✅ Need functional annotation (gene impact, consequence types)
  • ✅ Need clinical interpretation (pathogenicity, ClinVar, ACMG classification)
  • ✅ Need variant filtering by consequence, frequency, or pathogenicity
  • ✅ Working with human, mouse, or 38,000+ other genomes

Use cases:

  • Clinical diagnostics (identify pathogenic variants in patient samples)
  • Population genetics (annotate with allele frequencies)
  • Cancer genomics (somatic variant annotation with COSMIC)
  • Research variant prioritization (rank by predicted impact)
  • Non-model organism analysis (38,000+ genomes supported)

Don't use for:

  • ❌ Variant calling (use GATK/bcftools first) → this skill starts with VCF files
  • ❌ Structural variant annotation (limited support, use specialized tools)

Quick Start (Example Data)

Test this skill with example variants:

from load_example_data import load_clinvar_pathogenic_sample
data = load_clinvar_pathogenic_sample()  # Creates test VCF (~10 variants)
print(f"Example VCF created: {data['vcf_path']}")

What you get:

  • Dataset: 10 ClinVar pathogenic variants (BRCA1/BRCA2)
  • Expected: ~6 HIGH impact, ~8 pathogenic classifications
  • Runtime: VEP ~5 min, SNPEff ~2 min

Next steps: Use this VCF in the Standard Workflow below.

Optional validation test (for developers): python assets/eval/simple_test.py to verify installation.

For your own data: See Inputs and Clarification Questions.

Installation

Choose one annotation tool:

Tool Best For Installation Cache/Database Size
VEP Human clinical, comprehensive annotations conda install -c bioconda ensembl-vep 15-20 GB (one-time)
SNPEff Non-model organisms, quick analysis conda install -c bioconda snpeff 2-5 GB per genome

Read the full file on GitHub · 446 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. 9d ago First seen · 446 lines · 4 tokens per session scan A b470d3cf5b6f

Subscribe to this mod's changes

Genetic Variant Annotation is a skill published in the GitHub repository TianGzlab/OmicsClaw (160 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 4 tokens to every session and 4,794 once invoked, about $0.0000 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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