query-ensembl

Queries Ensembl REST endpoints for genomic annotations, sequences, and variants.

30|2|Updated Mar 13, 2026
One-click install
npx skills add https://github.com/IDEA-XL/MolClaw --skill query-ensembl-idea-xl
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: query-ensembl
Source: https://github.com/IDEA-XL/MolClaw/tree/main/.claude/skills/query-ensembl
Command: npx skills add https://github.com/IDEA-XL/MolClaw --skill query-ensembl-idea-xl

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Queries Ensembl to retrieve gene coordinates, sequences, variants, and gene structures when users ask for genomic information such as exon/transcript details or cross-species comparisons.

Core Features & Use Cases

  • Ensembl lookups: fetch gene metadata by symbol or ID.
  • Sequence retrieval: obtain genomic/cDNA/protein sequences for a given gene or region.
  • Variant info: look up rsIDs and variant annotations.
  • Region queries: get overlapping features in a specified region.
  • Cross-species comparisons: retrieve homologs and orthologs.

Quick Start

Ask me for the genomic location or sequence of a gene using Ensembl REST endpoints.

Frequently Asked Questions about query-ensembl

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I query Ensembl for gene coordinates and genomic sequences?▼

Querying Ensembl for gene coordinates and genomic sequences involves using REST endpoints like /lookup/symbol and /sequence/id to fetch gene metadata and retrieve genomic, cDNA, or protein sequences returned as JSON responses.

How do I look up rsID variant annotations in Ensembl?▼

Looking up rsID variant annotations in Ensembl is done by querying the /variation REST endpoint, which retrieves detailed variant information and annotations formatted as JSON.

What is the best way to get exon and transcript structure from Ensembl?▼

The best way to get exon and transcript structure from Ensembl is querying the /overlap/region REST endpoint, which retrieves overlapping genomic features and detailed gene structures for a specified region.

Can I retrieve cross-species homologs and orthologs using the Ensembl REST API?▼

Yes, you can retrieve cross-species homologs and orthologs using the Ensembl REST API by querying the /homology endpoint, which returns comparative genomics data for specified gene IDs.

Does querying Ensembl REST endpoints require any specific bioinformatics dependencies?▼

Querying Ensembl REST endpoints requires no specific bioinformatics dependencies or environment setup, as the API returns standard JSON responses directly accessible via HTTP requests.