biopython-sequence-analysis

biopython-sequence-analysis is a skill for Claude Code from jaechang-hits/SciAgent-Skills. It costs 118 tokens per session (9,397 once invoked), scanned A, original, no licence file.

A Python toolkit for reading, comparing and organizing biological DNA, RNA and protein sequences. It also connects to NCBI, BLAST and tools for alignments and evolutionary trees.

In plain words
What is it for?
Use it for gene-family studies, comparative genomics, phylogenomics, file parsing and conversion, NCBI queries, BLAST searches, pairwise or multiple alignment, and phylogenetic trees.
Why use it?
It removes repetitive code from sequence-processing pipelines and helps combine database searches with local analysis. It supports common files such as FASTA, FASTQ, GenBank and GFF.

Skill for Claude Code

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

Part of the sciagent-skills plugin — 146 skills shipped together

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.

agentmods
npx agentmods add skills/jaechang-hits/sciagent-skills/biopython-sequence-analysis
Any agent
npx skills add jaechang-hits/SciAgent-Skills --skill biopython-sequence-analysis
Clone the repo
git clone --depth 1 https://github.com/jaechang-hits/SciAgent-Skills

Made for: Claude Code.

Or install sciagent-skills, the plugin that ships this one along with the rest of its 146 skills.

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 biopython-sequence-analysis

README.md
[![agentmods](https://agentmods.dev/badge/skills/jaechang-hits/sciagent-skills/biopython-sequence-analysis.svg)](https://agentmods.dev/skills/jaechang-hits/sciagent-skills/biopython-sequence-analysis)
Your own site
<a href="https://agentmods.dev/skills/jaechang-hits/sciagent-skills/biopython-sequence-analysis"><img src="https://agentmods.dev/badge/skills/jaechang-hits/sciagent-skills/biopython-sequence-analysis.svg" alt="Measured on agentmods" height="20"></a>
Per session 118 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 9,397 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 2 findings. Scan, not verified.
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 $0.00118 $0.09397
Opus 5 $0.00059 $0.04699
Sonnet 5 $0.00024 $0.01879
Haiku 4.5 $0.00012 $0.00940

Measured 6d ago against content hash 001695ab4739, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

biopython-sequence-analysis scanned grade A with 2 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 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.

| `urllib.error.HTTPError: 429 Too Many Requests` | Exceeding NCBI rate limit (3 req/s) | Add `time.sleep(0.4)` between calls, or register a free API key at https://www.ncbi.nlm.nih.gov/account/ for 10 req/s |

Runs shell commandslowCapability

Expected in a hook, worth knowing in a rule or an instructions file.

subprocess.run(
skills/genomics-bioinformatics/biopython-sequence-analysis/SKILL.md · 790 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

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 · 790 lines · 118 tokens per session scan A 001695ab4739

Subscribe to this mod's changes

biopython-sequence-analysis is a skill published in the GitHub repository jaechang-hits/SciAgent-Skills (361 stars, last pushed 8d ago), with no licence file. It adds 118 tokens to every session and 9,397 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 2 findings (makes network calls, runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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