variant-evidence

variant-evidence is a skill for Claude Code, Codex from exon-research/genomi. It costs 32 tokens per session (1,853 once invoked), scanned A, original, Apache-2.0.

A research skill for answering focused questions about genetic variants, genes, genomic regions, and observed or missing DNA findings. It can use the user's active genome data or public evidence.

In plain words
What is it for?
Checking an rsID, allele, gene, region, genotype, or absence claim. It also supports evidence-based lookups from public records and an active genome index.
Why use it?
It helps distinguish what public sources show from what a person's own genetic data actually supports, including whether a result was detectable.

Skill for Claude CodeCodex

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

Good fit Checking an rsID, allele, gene, region, genotype, or absence claim. It also supports evidence-based lookups from public records and an active genome index.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/exon-research/genomi/variant-evidence
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 exon-research/genomi --skill variant-evidence
Clone the repo
git clone --depth 1 https://github.com/exon-research/genomi

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 variant-evidence

README.md
[![agentmods](https://agentmods.dev/badge/skills/exon-research/genomi/variant-evidence/github.svg)](https://agentmods.dev/skills/exon-research/genomi/variant-evidence)
Your own site
<a href="https://agentmods.dev/skills/exon-research/genomi/variant-evidence"><img src="https://agentmods.dev/badge/skills/exon-research/genomi/variant-evidence/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 variant-evidence

Your own site · 80×15
<a href="https://agentmods.dev/skills/exon-research/genomi/variant-evidence"><img src="https://agentmods.dev/badge/skills/exon-research/genomi/variant-evidence.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 32 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,853 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 $0.00032 $0.01853
Opus 5 $0.00016 $0.00927
Sonnet 5 $0.00006 $0.00371
Haiku 4.5 $0.00003 $0.00185

Measured 10d ago against content hash f741b9a6d665, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

variant-evidence 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 10d 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.

skills/variant-evidence/SKILL.md · 188 lines

How it starts

The opening of the file, as written. The whole thing — 188 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Variant And Gene Evidence

Use this skill when the user asks about a specific rsID, allele, gene, genomic region, observed genotype, absence/reference claim, or whether the user's own Active Genome Index supports a claim.

Goal

Answer with the smallest evidence packet needed. Use sample support and callability checks when the claim requires them.

Run genomi.describe_context first if the Active Genome Index is unknown. If an active Active Genome Index exists, use it for sample-specific lookup. With public-only context, answer from public/source evidence or ask the user for a file only when personal evidence is required.

Use variant.resolve as the umbrella first lookup when the user's target is an rsID, coordinate, exact allele, locus, region, or mixed text. It resolves flexible input, checks the Active Genome Index, gathers existing deterministic ClinVar/population/reviewed-source facts, and can search explicitly selected accessible Active Genome Index records with agi_id or include_known_active_genome_indexes.

Convention: See skills/conventions/evidence-quality.md. Convention: See skills/_output-rules.md.

Contract

Contract:

  • Personal variant claims are grounded in the selected Active Genome Index.
  • Public-only variant answers are clearly marked public-only.
  • Absence/reference claims require callability.
  • Positive allele claims use genotype support when answer confidence matters.
  • Medical meaning beyond static rows uses Journal source-review memory.

Cross-Capability Synthesis

A scope-limited result from this capability is not a final user-facing answer when other Genomi capabilities can contribute orthogonal evidence to the same question. Returning "cannot answer" while applicable capabilities remain unexamined is a host-agent failure mode.

Tools

active_genome_index.classify_genotype_support

Classify whether one exact allele has enough sample support to be used in a personal interpretation.

Use when: A user-specific interpretation depends on whether one exact allele is actually supported by Active Genome Index genotype/QC evidence.

Read the full file on GitHub · 188 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. 10d ago First seen · 188 lines · 32 tokens per session scan A f741b9a6d665

Subscribe to this mod's changes

variant-evidence is a skill published in the GitHub repository exon-research/genomi (482 stars, last pushed 9d ago), licensed Apache-2.0. It adds 32 tokens to every session and 1,853 once invoked, about $0.0002 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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