biopython

biopython is a skill for Claude Code, Codex from SrulyRosenblat/skill-cards. It costs 71 tokens per session (9,655 once invoked), scanned A, original, no licence file.

A Python library and guide for computational biology, the use of computers to study biological data. It supports work with DNA, RNA, and protein sequences, biological file formats, database searches, alignments, evolutionary trees, and structures.

In plain words
What is it for?
Use it to read FASTA or GenBank files, compare sequences, run BLAST searches, study phylogenetic trees, analyze structures, and access NCBI databases.
Why use it?
It provides common biology-data operations in Python instead of requiring each task to be implemented from scratch.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

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/srulyrosenblat/skill-cards/biopython
Any agent
npx skills add SrulyRosenblat/skill-cards --skill biopython
Clone the repo
git clone --depth 1 https://github.com/SrulyRosenblat/skill-cards

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 biopython

README.md
[![agentmods](https://agentmods.dev/badge/skills/srulyrosenblat/skill-cards/biopython.svg)](https://agentmods.dev/skills/srulyrosenblat/skill-cards/biopython)
Your own site
<a href="https://agentmods.dev/skills/srulyrosenblat/skill-cards/biopython"><img src="https://agentmods.dev/badge/skills/srulyrosenblat/skill-cards/biopython.svg" alt="Measured on agentmods" height="20"></a>
Per session 71 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 9,655 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 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 $0.00071 $0.09655
Opus 5 $0.00036 $0.04827
Sonnet 5 $0.00014 $0.01931
Haiku 4.5 $0.00007 $0.00966

Measured 5d ago against content hash 38ab58f54eff, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

biopython 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 5d 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/numpy-marketplace-scientific-agent-skills/source/skills/biopython/SKILL.md · 1,521 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

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. 5d ago First seen · 1,521 lines · 71 tokens per session scan A 38ab58f54eff

Subscribe to this mod's changes

biopython is a skill published in the GitHub repository SrulyRosenblat/skill-cards (2 stars, last pushed 2mo ago), with no licence file. It adds 71 tokens to every session and 9,655 once invoked, about $0.0004 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 2026-08-31.

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