Agent skill

Alphafold Database Fetch And Analyze

by google-deepmind in google-deepmind/science-skills

Retrieve and analyze AlphaFold predicted structures for a protein.

Apache-2.0Auto-check passedResearch & Science

Install Alphafold Database Fetch And Analyze

skills CLI
$ npx skills add google-deepmind/science-skills --skill alphafold-database-fetch-and-analyze -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install google-deepmind/science-skills alphafold-database-fetch-and-analyze --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/google-deepmind/science-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/alphafold_database_fetch_and_analyze .claude/skills/alphafold-database-fetch-and-analyze && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
alphafold-database-fetch-and-analyze
GitHub stars
3.2k
Used in
2 other repos
Token cost
~1.2k tokens
SKILL.md length
551 words
Files
5 (incl. scripts, references)
Skills in repo
40
Repo updated
First seen
Licence
Apache-2.0

At a glance

Retrieve and analyze AlphaFold predicted structures for a protein.

  • Works in 2 steps: uv: Read the uv skill and follow its… → User Notification: If
  • The user provides a specific UniProt Accession ID and wants structural confidence metrics (pLDDT)
  • SKILL.md covers Prerequisites, Overview, Core Rules and Utility Scripts, plus 1 more section
  • Runs Python scripts from its folder; calls uv

What it does

Alphafold Database Fetch And Analyze is an agent skill from google-deepmind/science-skills. Retrieve and analyze AlphaFold predicted structures for a protein. Use when the user provides a specific UniProt Accession ID and wants structural confidence metrics (pLDDT), domain boundary analysis, or disorder assessment. Do not use if the user only has a protein name, gene name, or amino acid sequence — ask for a UniProt ID first.

Its SKILL.md is about 1.2k tokens, which your agent loads only when the skill is triggered. The skill folder holds 6 other files, including scripts and reference files (for example `scripts/analyze_pae.py`, `scripts/analyze_plddt.py` and `scripts/fetch_structure.py`).

It sits in Research & Science, covering Protein structure and design. It works with AlphaFold and UniProt. The repository describes itself as: GDM Science Skills to speed up agentic scientific workflows with better grounding and higher token efficiency. Integrate insights from AlphaGenome, AFDB, UniProt and 30+ other… The licence is Apache-2.0.

When your agent uses it

  • The user provides a specific UniProt Accession ID and wants structural confidence metrics (pLDDT)
  • Domain boundary analysis
  • Disorder assessment
  • The user only has a protein name

Example prompts

  • “/alphafold-database-fetch-and-analyze”

Requirements

  • Python 3

Workflow steps

2 steps, taken from the first numbered list in SKILL.md.

  1. uv: Read the uv skill and follow its Setup instructions to ensure
  2. User Notification: If

What it can do on your machine

Read from SKILL.md and the folder at commit 6883275. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Ships 3 files in scripts/ (Python), which the agent can run.

    Shell commands in SKILL.md call:

    • uv

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Links to these hosts (documentation or services it may open):

    • alphafold.ebi.ac.uk
    • uniprot.org

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Alphafold Database Fetch And Analyze loads about 1.2k tokens when it runs, and up to ~3.8k if it reads all its reference files. Until then it costs about 93 tokens; SKILL.md has 551 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~93
When it runs · the whole SKILL.md, loaded when a task matches
~1.2k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~3.8k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.

SKILL.md

The full file from google-deepmind/science-skills at commit 6883275, republished under its Apache-2.0 licence (© google-deepmind). 551 words, ~1,189 tokens.

Download SKILL.mdSave it as .claude/skills/alphafold-database-fetch-and-analyze/SKILL.md (or your agent's skills folder). This skill also uses 4 other files; get the full folder from GitHub.
name
alphafold-database-fetch-and-analyze
description
Retrieve and analyze AlphaFold predicted structures for a protein. Use when the user provides a specific UniProt Accession ID and wants structural confidence metrics (pLDDT), domain boundary analysis, or disorder assessment. Do not use if the user only has a protein name, gene name, or amino acid sequence — ask for a UniProt ID first.

AlphaFold Database: Fetch and Analyze

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/alphafold_database_fetch_and_analyze_LICENSE.txt does not already exist in the workspace root directory then (1) prominently notify the user to check the terms at https://alphafold.ebi.ac.uk/, then (2) create the file recording the notification text and timestamp.

Overview

Downloads AlphaFold predicted structures (mmCIF) and Predicted Aligned Error (PAE) matrices from the AlphaFold Database for a given UniProt ID, then performs automated heuristic analysis on structural confidence (pLDDT), intrinsically disordered regions, rigid domain boundaries, and inter-domain flexibility.

Do NOT use when:

  • The user only has a protein name, gene name, or amino acid sequence (no UniProt ID) — ask them to look up the ID on UniProt.
  • The user wants to search for structural homologs (use Foldseek).
  • The user wants to run AlphaFold predictions on a custom sequence.
  • The user needs experimental PDB structures (use RCSB PDB).

Core Rules

  • Use the Wrapper: ALWAYS execute the provided helper scripts to query the database rather than accessing the database directly. The scripts automatically enforce the required rate limit gracefully.
  • Do not attempt to calculate domain boundaries or assess structural disorder yourself; always rely on the output provided by the script.
  • If this skill is used, ensure this is mentioned in the output.

Utility Scripts

1. Fetch Structure Files

Downloads the .cif structure file, _predicted_aligned_error.json, and API metadata JSON (-metadata.json) for a UniProt ID. Handles fragment fallback for very large proteins.

Examples:

bash
uv run scripts/fetch_structure.py P00520 -o /path/to/output/
uv run scripts/fetch_structure.py P04637 -o /path/to/custom_results/

Always specify -o with an absolute path or a path relative to the user's project root, never a path relative to the skill directory.

2. Analyze pLDDT Confidence

Reads pLDDT confidence metrics from a saved AFDB metadata JSON file (produced by fetch_structure.py) and prints a heuristic confidence assessment (structured, disordered, mixed).

Example:

bash
uv run scripts/analyze_plddt.py ./data/AF-P00520-F1-metadata.json

3. Analyze PAE / Domain Boundaries

Reads a downloaded PAE JSON file and detects rigid domain boundaries using a sliding-window PAE heuristic.

Example:

bash
uv run scripts/analyze_pae.py ./data/AF-P00520-F1-predicted_aligned_error_v6.json
Show full SKILL.md (225 more words)Show less

Interpreting the Output

The script prints analysis to stdout. Read it carefully and synthesize the results for the user:

  1. Isoform / Large Protein Warning (MANDATORY): Check the script output for any [!] WARNING lines. If the script reports that no canonical entry was found and an isoform was used, or if the protein is very large (>2700 AAs), you MUST prominently relay this warning to the user. Do not omit this warning.
  2. Synthesize the Structural Analysis: Combine the "pLDDT Conclusion" and the "PAE Structural Conclusion" into a single, cohesive overall summary. Describe the protein's overall folding confidence, the presence of disordered regions, and its rigid domain layout.
  3. Highlight the supporting metrics:
    • Overall Global pLDDT and the breakdown of fraction confidence (especially Very Low vs. Very High).
    • Domain Boundary Analysis (number of distinct global domains and their specific residue ranges).
  4. Explicit Disorder Warning: If the analysis concludes that the protein is highly intrinsically disordered (e.g., high fraction of <50 pLDDT or lack of rigid domains), issue a separate, prominent warning. Advise the user against proceeding with whole-protein downstream structural analysis (like Foldseek or docking). If small ordered domains exist amidst the disorder, advise the user to restrict any future analysis strictly to those specific residue boundaries.
  5. Remind the user that per-residue pLDDT is embedded in the B-factor column of the downloaded mmCIF file.

© google-deepmind, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 4 other files (scripts, references) in skills/alphafold_database_fetch_and_analyze of google-deepmind/science-skills.

  • SKILL.md
  • references/citation.bib
  • scripts/analyze_pae.py
  • scripts/analyze_plddt.py
  • scripts/fetch_structure.py

Open the folder on GitHubat commit 6883275

Used in 2 other repositories

We found 2 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 2 other GitHub owners. This page covers the copy in google-deepmind/science-skills, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Alphafold Database Fetch And Analyze next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

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Bio Structural Biology Alphafold PredictionsFreedomIntelligence/OpenClaw-Medical-Skills3.1k1 repos~2.1kAutomated safety check: PassNone

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Questions about Alphafold Database Fetch And Analyze

What does Alphafold Database Fetch And Analyze do?

Retrieve and analyze AlphaFold predicted structures for a protein. Alphafold Database Fetch And Analyze is an agent skill from google-deepmind/science-skills. Retrieve and analyze AlphaFold predicted structures for a protein.

When should I use Alphafold Database Fetch And Analyze?

Alphafold Database Fetch And Analyze fits situations like: the user provides a specific UniProt Accession ID and wants structural confidence metrics (pLDDT); domain boundary analysis; disorder assessment; the user only has a protein name.

How do I install Alphafold Database Fetch And Analyze in Claude Code?

Run `npx skills add google-deepmind/science-skills --skill alphafold-database-fetch-and-analyze -a claude-code`. Or copy the skill folder (skills/alphafold_database_fetch_and_analyze in google-deepmind/science-skills) into .claude/skills/alphafold-database-fetch-and-analyze in your project. Claude Code loads it when a task matches its description.

How do I install Alphafold Database Fetch And Analyze in Codex?

Run `npx skills add google-deepmind/science-skills --skill alphafold-database-fetch-and-analyze -a codex`. Or copy the skill folder (skills/alphafold_database_fetch_and_analyze in google-deepmind/science-skills) into .agents/skills/alphafold-database-fetch-and-analyze in your project. Codex loads it when a task matches its description.

Can I use Alphafold Database Fetch And Analyze in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add google-deepmind/science-skills --skill alphafold-database-fetch-and-analyze -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/alphafold-database-fetch-and-analyze, .gemini/skills/alphafold-database-fetch-and-analyze, .github/skills/alphafold-database-fetch-and-analyze and .opencode/skills/alphafold-database-fetch-and-analyze in your project.

What does Alphafold Database Fetch And Analyze need to run?

Going by SKILL.md and its folder, Alphafold Database Fetch And Analyze needs Python for the scripts in its folder and the command-line tools its instructions call (uv). Our summary lists: Python 3.

Does Alphafold Database Fetch And Analyze access the network?

SKILL.md names 2 domains. As links in the text: alphafold.ebi.ac.uk and uniprot.org. This is read from the text; nothing was executed.

Is Alphafold Database Fetch And Analyze safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.

What licence does Alphafold Database Fetch And Analyze use?

Alphafold Database Fetch And Analyze is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Alphafold Database Fetch And Analyze use?

About 1.2k tokens (SKILL.md is roughly 4.8k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 2.6k tokens, read only when the agent opens those files.

What are the alternatives to Alphafold Database Fetch And Analyze?

Skills that share tags, products or a category with Alphafold Database Fetch And Analyze: Bio DB Tools (DrugClaw/DrugClaw, 125 stars), Gget (davila7/claude-code-templates, 32k stars), Alphafold Database (davila7/claude-code-templates, 32k stars) and Tooluniverse Protein Structure Retrieval (wu-yc/LabClaw, 1.1k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Alphafold Database Fetch And Analyze?

google-deepmind (a GitHub organization) maintains it in google-deepmind/science-skills, which has 3,226 GitHub stars. The repository holds 40 skills in this directory. The repository was last updated on September 15, 2026.

Source: google-deepmind/science-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.