alphafold3

alphafold3 is a skill for Claude Code, Codex from naity/FM4Life. It costs 151 tokens per session (2,395 once invoked), scanned A, original, MIT.

A guide for using AlphaFold 3, a model that predicts the three-dimensional structure of biological molecules and their complexes. It covers proteins together with DNA, RNA, small-molecule drugs, ions, and chemical modifications.

In plain words
What is it for?
Use it to plan AlphaFold 3 predictions for protein complexes, protein–drug interactions, and protein–DNA or protein–RNA systems.
Why use it?
It helps researchers choose an appropriate way to predict structures when a protein interacts with other molecules. It also explains access options and the non-commercial restrictions described in the source.

Skill for Claude CodeCodex

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

Good fit Use it to plan AlphaFold 3 predictions for protein complexes, protein–drug interactions, and protein–DNA or protein–RNA systems.

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Install with agentmods
npx agentmods add skills/naity/fm4life/alphafold3
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 naity/FM4Life --skill alphafold3
Clone the repo
git clone --depth 1 https://github.com/naity/FM4Life

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 alphafold3

README.md
[![agentmods](https://agentmods.dev/badge/skills/naity/fm4life/alphafold3.svg)](https://agentmods.dev/skills/naity/fm4life/alphafold3)
Your own site
<a href="https://agentmods.dev/skills/naity/fm4life/alphafold3"><img src="https://agentmods.dev/badge/skills/naity/fm4life/alphafold3.svg" alt="Measured on agentmods" height="20"></a>
Per session 151 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,395 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 $0.00151 $0.02395
Opus 5 $0.00076 $0.01197
Sonnet 5 $0.00030 $0.00479
Haiku 4.5 $0.00015 $0.00239

Measured 7d ago against content hash 7c58d479dbc4, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

alphafold3 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 7d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/build_input.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.

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/alphafold3/SKILL.md · 269 lines

How it starts

The opening of the file, as written. The whole thing — 269 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AlphaFold 3: Biomolecular Structure Prediction

Overview

AlphaFold 3 predicts the structure of mixed biomolecular systems in a single unified model:

  • Proteins (including post-translational modifications)
  • RNA and DNA (including modified bases)
  • Small molecule ligands (via CCD codes or SMILES)
  • Ions and cofactors
  • Covalently modified residues

This makes AF3 the tool of choice when your system contains anything beyond a bare protein. For pure protein structure prediction, AlphaFold 2 / ColabFold remains widely used and well-benchmarked.

⚠️ License and Access

AF3 is non-commercial only. Key constraints:

  • Source code: CC-BY-NC-SA 4.0 — non-commercial use only
  • Model weights: separate terms of use — must apply directly from Google; commercial use requires a separate agreement
  • Outputs: subject to output terms of use

For commercial use, check with Google DeepMind directly.

Access Options

Option 1: Web Server (fastest, no install)

https://alphafoldserver.com — free, up to 20 jobs/day, no installation required. Best for:

  • Exploratory work
  • Single predictions
  • Proteins + limited ligand set

The web server uses a slightly simplified JSON format (alphafoldserver dialect) and has a more limited set of ligands and covalent modifications than the local install.

Option 2: Local Install (full capabilities)

Requires:

  • Linux (Ubuntu 22.04 recommended)
  • NVIDIA GPU with Compute Capability ≥ 8.0 (A100 or H100 80GB)
  • ≥ 64 GB RAM
  • ~1 TB disk for databases (SSD recommended)
  • Model weights from Google (apply here)
# Clone and build Docker image
git clone https://github.com/google-deepmind/alphafold3.git && cd alphafold3
docker build -t alphafold3 -f docker/Dockerfile .

# Download databases (~600 GB download)
bash fetch_databases.sh /data/af3_databases

# Run prediction
docker run -it \
  --volume $HOME/af_input:/root/af_input \
  --volume $HOME/af_output:/root/af_output \
  --volume /data/af3_models:/root/models \
  --volume /data/af3_databases:/root/public_databases \
  --gpus all \
  alphafold3 \
  python run_alphafold.py \
    --json_path=/root/af_input/input.json \
    --model_dir=/root/models \
    --output_dir=/root/af_output

Read the full file on GitHub · 269 lines

Files

What ships with it

3 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. 7d ago First seen · 269 lines · 151 tokens per session scan A 7c58d479dbc4

Subscribe to this mod's changes

alphafold3 is a skill published in the GitHub repository naity/FM4Life (2 stars, last pushed 5mo ago), licensed MIT. It adds 151 tokens to every session and 2,395 once invoked, about $0.0008 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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