ena-sequence-api

ena-sequence-api is a skill for Claude Code, Codex from wentorai/research-plugins. It costs 15 tokens per session (1,566 once invoked), scanned A, original, MIT.

A programming interface for finding nucleotide sequence data in the European Nucleotide Archive, a public archive of DNA and RNA sequencing records. It supports searches, accession lookups, and downloads of raw reads, assembled sequences, and annotations.

In plain words
What is it for?
Use it to locate research datasets, retrieve sequencing records, look up accessions, or download sequences in formats such as FASTA.
Why use it?
It provides direct, repeatable access to archived sequence data without manually navigating the archive. Searches can target studies, samples, sequencing runs, or known record identifiers.

Skill for Claude CodeCodex

Which agent this was written for is unclear — built for openclaw. Also seen: built for openclaw.

Good fit Use it to locate research datasets, retrieve sequencing records, look up accessions, or download sequences in formats such as FASTA.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/wentorai/research-plugins/ena-sequence-api
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 wentorai/research-plugins --skill ena-sequence-api
Clone the repo
git clone --depth 1 https://github.com/wentorai/research-plugins

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 ena-sequence-api

README.md
[![agentmods](https://agentmods.dev/badge/skills/wentorai/research-plugins/ena-sequence-api/github.svg)](https://agentmods.dev/skills/wentorai/research-plugins/ena-sequence-api)
Your own site
<a href="https://agentmods.dev/skills/wentorai/research-plugins/ena-sequence-api"><img src="https://agentmods.dev/badge/skills/wentorai/research-plugins/ena-sequence-api/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 ena-sequence-api

Your own site · 80×15
<a href="https://agentmods.dev/skills/wentorai/research-plugins/ena-sequence-api"><img src="https://agentmods.dev/badge/skills/wentorai/research-plugins/ena-sequence-api.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 15 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,566 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. 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 $0.00015 $0.01566
Opus 5 $0.00008 $0.00783
Sonnet 5 $0.00003 $0.00313
Haiku 4.5 $0.00002 $0.00157

Measured 6d ago against content hash c4dc56be8c35, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

ena-sequence-api 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 6d 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 "https://www.ebi.ac.uk/ena/portal/api/search?query=CRISPR+cas9&result=study&limit=20&format=json"
skills/domains/biomedical/ena-sequence-api/SKILL.md · 176 lines

How it starts

The opening of the file, as written. The whole thing — 176 lines — stays where its author put it; the contents beside it link to each section on GitHub.

European Nucleotide Archive (ENA) API

Overview

The European Nucleotide Archive (ENA) at EMBL-EBI is one of the three global nucleotide sequence databases (with NCBI GenBank and DDBJ). It provides access to raw sequencing reads, assembled sequences, and functional annotations from all organisms. The API supports accession lookup, text search, and bulk data retrieval. Free, no authentication required.

API Endpoints

Portal API (Search)

# Search for studies
curl "https://www.ebi.ac.uk/ena/portal/api/search?query=CRISPR+cas9&result=study&limit=20&format=json"

# Search for samples
curl "https://www.ebi.ac.uk/ena/portal/api/search?query=human+gut+microbiome&result=sample&limit=20&format=json"

# Search for runs (sequencing data)
curl "https://www.ebi.ac.uk/ena/portal/api/search?query=RNA-seq+cancer&result=read_run&limit=20&format=json"

Browser API (Accession Lookup)

# Get record by accession
curl "https://www.ebi.ac.uk/ena/browser/api/xml/PRJEB12345"

# Get in JSON format
curl "https://www.ebi.ac.uk/ena/browser/api/summary/PRJEB12345"

# Get sequence in FASTA
curl "https://www.ebi.ac.uk/ena/browser/api/fasta/AF123456"

# Get in EMBL flat file format
curl "https://www.ebi.ac.uk/ena/browser/api/embl/AF123456"

Taxonomy Search

# Search by organism
curl "https://www.ebi.ac.uk/ena/portal/api/search?query=tax_tree(9606)&result=study&limit=20&format=json"

# Get taxonomy details
curl "https://www.ebi.ac.uk/ena/taxonomy/rest/tax-id/9606"

Result Types

Type Description Example accession
study Research project PRJEB12345
sample Biological sample SAMEA12345
experiment Library/protocol ERX12345
read_run Sequencing run ERR12345
analysis Computed analysis ERZ12345
sequence Assembled sequence AF123456
wgs_set Whole genome shotgun AABR00000000

Query Parameters

Parameter Description Example
query Search text or taxonomy query=SARS-CoV-2
result Result type result=study
limit Max results (default 100K) limit=50
offset Pagination offset offset=100
format Response format json, tsv, xml
fields Specific fields fields=accession,description

Read the full file on GitHub · 176 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. 6d ago First seen · 176 lines · 15 tokens per session scan A c4dc56be8c35

Subscribe to this mod's changes

ena-sequence-api is a skill published in the GitHub repository wentorai/research-plugins (291 stars, last pushed 2mo ago), licensed MIT. It adds 15 tokens to every session and 1,566 once invoked, about $0.0001 per session on Opus 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 2026-09-03.

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