alphafold2-multimer

alphafold2-multimer is a skill for Claude Code, Codex from zongtingwei/Bioclaw_Skills_Hub. It costs 117 tokens per session (1,610 once invoked), scanned A, original, MIT.

A tool for predicting the three-dimensional shape of a protein from its amino-acid sequence, including the shape formed by multiple proteins together.

In plain words
What is it for?
Use it to validate protein designs, predict protein-binding complexes, compare alternative structures, and review confidence scores such as pLDDT, pTM, and ipTM.
Why use it?
It provides a structure prediction and confidence measures that help check whether a designed protein or protein pair is likely to fold as expected.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: positional $N argument.

Needs its repository: it reads a path above its own folder, which exists only inside the repository. The line is **First time?** See [Installation Guide](../../docs/installation.md) to set up Modal and biomodals..

Good fit Use it to validate protein designs, predict protein-binding complexes, compare alternative structures, and review confidence scores such as pLDDT, pTM, and ipTM.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/zongtingwei/Bioclaw_Skills_Hub
agentmods
npx agentmods add skills/zongtingwei/bioclaw_skills_hub/alphafold2-multimer

Made for: Claude Code, Codex.

Wrote this? Show the measurements

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README.md
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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.

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Per session 117 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,610 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 $0.00117 $0.01610
Opus 5 $0.00059 $0.00805
Sonnet 5 $0.00023 $0.00322
Haiku 4.5 $0.00012 $0.00161

Measured 12d ago against content hash c3fff37af766, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

alphafold2-multimer 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 12d 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/protein-design/skills/alphafold2-multimer/SKILL.md · 203 lines

How it starts

The opening of the file, as written. The whole thing — 203 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AlphaFold2 / AlphaFold-Multimer Validation

Plain-language role: Use AlphaFold when you want a reference-grade structure prediction check for a designed sequence or complex.

Prerequisites

Requirement Minimum Recommended
Python 3.8+ 3.10
CUDA 11.0+ 12.0+
GPU VRAM 32GB 40GB (A100)
RAM 32GB 64GB
Disk 100GB 500GB (for databases)

How to run

First time? See Installation Guide to set up Modal and biomodals.

Option 1: ColabFold (recommended for multimer)

cd biomodals
modal run modal_colabfold.py \
  --input-faa sequences.fasta \
  --out-dir output/

GPU: A100 (40GB) | Timeout: 3600s default

Option 2: Local installation

git clone https://github.com/deepmind/alphafold2-multimer.git
cd alphafold2-multimer

python run_alphafold.py \
  --fasta_paths=query.fasta \
  --output_dir=output/ \
  --model_preset=monomer \
  --max_template_date=2026-01-01

Option 3: ESMFold (fast single-chain)

modal run modal_esmfold.py \
  --sequence "MKTAYIAKQRQISFVK..."

Key parameters

Parameter Default Options Description
--model_preset monomer monomer/multimer Model type
--num_recycle 3 1-20 Recycling iterations
--max_template_date - YYYY-MM-DD Template cutoff
--use_templates True True/False Use template search

Output format

output/
├── ranked_0.pdb           # Best model
├── ranked_1.pdb           # Second best
├── ranking_debug.json     # Confidence scores
├── result_model_1.pkl     # Full results
├── msas/                  # MSA files
└── features.pkl           # Input features

Extracting metrics

import pickle

with open('result_model_1.pkl', 'rb') as f:
    result = pickle.load(f)

plddt = result['plddt']
ptm = result['ptm']
iptm = result.get('iptm', None)  # Multimer only
pae = result['predicted_aligned_error']

Read the full file on GitHub · 203 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. 12d ago First seen · 203 lines · 117 tokens per session scan A c3fff37af766

Subscribe to this mod's changes

alphafold2-multimer is a skill published in the GitHub repository zongtingwei/Bioclaw_Skills_Hub (26 stars, last pushed 5mo ago), licensed MIT. It adds 117 tokens to every session and 1,610 once invoked, about $0.0006 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 2026-08-30.

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