protein-sequence-msa

protein-sequence-msa is a skill for Claude Code, Codex from google-deepmind/science-skills. It costs 111 tokens per session (1,361 once invoked), scanned A, original, Apache-2.0.

A workflow for aligning multiple protein sequences with EBI Clustal Omega, a web service that places related amino-acid sequences in matching positions.

In plain words
What is it for?
Use it to perform multiple sequence alignment for up to 4,000 protein sequences and assess similarity or conserved domains. It is not for searching a database for matching proteins.
Why use it?
It helps compare proteins and identify conserved regions or residues without manually lining up the sequences.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to perform multiple sequence alignment for up to 4,000 protein sequences and assess similarity or conserved domains. It is not for searching a database for matching proteins.

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Install with agentmods
npx agentmods add skills/google-deepmind/science-skills/protein_sequence_msa
About the project

Science Skills is a collection of add-ons that give AI agents structured instructions, scripts, and references for scientific research, including genomics, structural biology, cheminformatics, and literature search. Researchers use it to guide agents through specialized scientific tasks with information from databases and tools such as AlphaGenome, AFDB, and UniProt. The catalogue entries are individual skills from this collection.

google-deepmind/science-skills · 2,849 stars · on GitHub · antigravity.google

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 google-deepmind/science-skills --skill protein_sequence_msa
Clone the repo
git clone --depth 1 https://github.com/google-deepmind/science-skills

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 protein-sequence-msa

README.md
[![agentmods](https://agentmods.dev/badge/skills/google-deepmind/science-skills/protein_sequence_msa.svg)](https://agentmods.dev/skills/google-deepmind/science-skills/protein_sequence_msa)
Your own site
<a href="https://agentmods.dev/skills/google-deepmind/science-skills/protein_sequence_msa"><img src="https://agentmods.dev/badge/skills/google-deepmind/science-skills/protein_sequence_msa.svg" alt="Measured on agentmods" height="20"></a>
Per session 111 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,361 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 $0.00111 $0.01361
Opus 5 $0.00056 $0.00681
Sonnet 5 $0.00022 $0.00272
Haiku 4.5 $0.00011 $0.00136

Measured 8d ago against content hash 899c45684b07, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

protein-sequence-msa 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 8d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/msa_align.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

`scripts/msa_align.py` rather than writing your own curl or custom Python
skills/protein_sequence_msa/SKILL.md · 123 lines

How it starts

The opening of the file, as written. The whole thing — 123 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Prerequisites

  1. uv: Read the uv skill and follow its Setup instructions to ensure uv is installed and on PATH.
  2. User Notification: If .licenses/protein_sequence_msa_LICENSE.txt does not already exist in the workspace root directory then (1) prominently notify the user to check the terms at https://www.ebi.ac.uk/jdispatcher/msa/clustalo and https://www.ebi.ac.uk/about/terms-of-use/, then (2) create the file recording the notification text and timestamp.
  3. .env file: Make sure the .env file exists in your home directory. Create one if it does not exist.
  4. USER_EMAIL: Required by the wrapper script for Clustal Omega job tracking (recommended by the EBI). You MUST use the safe credentials protocol in the credentials skill to check for and request this credential if this skill looks relevant to the user's request.

Core Rules

  • Use the Wrapper: ALWAYS execute the alignment using scripts/msa_align.py rather than writing your own curl or custom Python requests. The script automatically enforces the required rate limit to respect EBI's Terms of Use.
  • Notification: If this skill is used, ensure this is mentioned in the output.
  • Always state the method: Every report must clearly state that the alignment was performed using EBI Clustal Omega.
  • No Hallucinations: Do NOT invent alignments or conservation metrics. Report only what is present in the alignment file.

Goal

Take a file containing multiple protein sequences in FASTA format, perform multiple sequence alignment using the EBI Clustal Omega API, save the resulting alignment locally for future programmatic analysis, and interpret the results towards addressing the user's specific research objective (e.g., assessing similarity, identifying conserved domains, or analyzing key residues).

Instructions

  1. Prepare Input File: The input must be a plain text file containing two or more protein sequences in FASTA format. Each sequence header must start with a > symbol. Example:

Read the full file on GitHub · 123 lines

Files

What ships with it

2 files 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. 8d ago First seen · 123 lines · 111 tokens per session scan A 899c45684b07

Subscribe to this mod's changes

protein-sequence-msa is a skill published in the GitHub repository google-deepmind/science-skills (2,849 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 111 tokens to every session and 1,361 once invoked, about $0.0006 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 2026-08-30.

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