ensembl-annotation

ensembl-annotation is a skill for Claude Code from ammawla/encode-toolkit. It costs 152 tokens per session (4,009 once invoked), scanned A, original, AGPL-3.0.

A tool for querying Ensembl, a public database of genes and genomes, about regulatory regions, genetic variants, genes, and genomic coordinates.

In plain words
What is it for?
It helps predict variant effects with VEP, check regulatory-region overlaps, convert coordinates between genome builds, look up genes, and find related database references.
Why use it?
It brings several common genome-annotation tasks into one workflow instead of requiring separate database lookups and manual coordinate conversions.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the encode-toolkit plugin — 47 skills, 1 MCP server shipped together

Good fit It helps predict variant effects with VEP, check regulatory-region overlaps, convert coordinates between genome builds, look up genes, and find related database references.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/ammawla/encode-toolkit/ensembl-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 ammawla/encode-toolkit --skill ensembl-annotation
Clone the repo
git clone --depth 1 https://github.com/ammawla/encode-toolkit

Made for: Claude Code.

Or install encode-toolkit, the plugin that ships this one along with the rest of its 47 skills, 1 MCP server.

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 ensembl-annotation

README.md
[![agentmods](https://agentmods.dev/badge/skills/ammawla/encode-toolkit/ensembl-annotation/github.svg)](https://agentmods.dev/skills/ammawla/encode-toolkit/ensembl-annotation)
Your own site
<a href="https://agentmods.dev/skills/ammawla/encode-toolkit/ensembl-annotation"><img src="https://agentmods.dev/badge/skills/ammawla/encode-toolkit/ensembl-annotation/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 ensembl-annotation

Your own site · 80×15
<a href="https://agentmods.dev/skills/ammawla/encode-toolkit/ensembl-annotation"><img src="https://agentmods.dev/badge/skills/ammawla/encode-toolkit/ensembl-annotation.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 152 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,009 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown 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 $0.00152 $0.04009
Opus 5.5 $0.00061 $0.01604
Sonnet 5.5 $0.00030 $0.00802
Haiku 4.5 $0.00015 $0.00401

Measured 1mo ago against content hash f050e3e8365b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ensembl-annotation scanned grade A with 1 finding 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 1mo 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -H "Content-type: application/json" \
plugin/skills/ensembl-annotation/SKILL.md · 384 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Files

What ships with it

1 file 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. 1mo ago Changed · +20 lines f050e3e8365b
  2. 1mo ago First seen · 364 lines · 152 tokens per session scan A 2bd15faafc68

Subscribe to this mod's changes

ensembl-annotation is a skill published in the GitHub repository ammawla/encode-toolkit (21 stars, last pushed 26d ago), licensed AGPL-3.0. It adds 152 tokens to every session and 4,009 once invoked, about $0.0006 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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