bio-generative-design

bio-generative-design is a skill for Claude Code, Codex from GPTomics/bioSkills. It costs 119 tokens per session (4,139 once invoked), scanned A, original, MIT.

A toolkit for generating new molecules or modifying existing ones with machine-learning models. It can focus designs on desired properties, scaffolds, linkers, or substituent groups.

In plain words
What is it for?
Use it for de novo molecule generation, scaffold decoration, linker design, R-group replacement, scaffold hopping, and similarity-constrained molecular optimization.
Why use it?
It helps explore chemical possibilities beyond manually listing substitutions. The generated molecules can be guided toward several goals at once, such as activity and drug-like properties.

Skill for Claude CodeCodex

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/gptomics/bioskills/generative-design
Any agent
npx skills add GPTomics/bioSkills --skill generative-design
Clone the repo
git clone --depth 1 https://github.com/GPTomics/bioSkills

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 bio-generative-design

README.md
[![agentmods](https://agentmods.dev/badge/skills/gptomics/bioskills/generative-design.svg)](https://agentmods.dev/skills/gptomics/bioskills/generative-design)
Your own site
<a href="https://agentmods.dev/skills/gptomics/bioskills/generative-design"><img src="https://agentmods.dev/badge/skills/gptomics/bioskills/generative-design.svg" alt="Measured on agentmods" height="20"></a>
Per session 119 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,139 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00119 $0.04139
Opus 5 $0.00060 $0.02070
Sonnet 5 $0.00024 $0.00828
Haiku 4.5 $0.00012 $0.00414

Measured 4d ago against content hash bd54e465c2a2, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

bio-generative-design 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 4d 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

chemoinformatics/generative-design/SKILL.md · 321 lines

How it starts

The opening of the file, as written. The whole thing — 321 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Version Compatibility

Reference examples tested with: REINVENT 4.0+, RDKit 2024.09+, PyTorch 2.1+, MolMIM (NVIDIA BioNeMo), chemprop 2.0+.

Before using code patterns, verify installed versions match. If versions differ:

  • Python: pip show <package> then help(module.function) to check signatures

If code throws ImportError, AttributeError, or TypeError, introspect the installed package and adapt the example to match the actual API rather than retrying.

Generative Molecular Design

Generate novel molecules biased toward desired properties using deep generative models. REINVENT 4 (Loeffler et al. 2024, AstraZeneca) provides four generator families: Reinvent (de novo), Libinvent (scaffold decoration and library design), Linkinvent (linker design), and Mol2Mol (similarity-constrained molecular optimization). These support design tasks including R-group replacement and scaffold hopping and can be used with transfer learning, reinforcement learning, and curriculum learning. For specific niches: MolMIM (NVIDIA BioNeMo) for latent-space property optimization, DiffSMol / DiGress for diffusion-based generation, and JT-VAE for latent-space optimization. The art of generative design is in the scoring function: poorly-designed scoring rewards uninteresting molecules, while well-designed scoring captures both activity and developability.

For QSAR/scoring models that feed generative design, see chemoinformatics/qsar-modeling. For synthetic feasibility, see chemoinformatics/retrosynthesis. For library enumeration as alternative, see chemoinformatics/reaction-enumeration.

Generator Mode Taxonomy

Mode Input Output Use case Fails when
De novo Empty seed or training set Novel molecules Wide chemical space exploration Synthetic feasibility weak
Scaffold decoration Scaffold + attachment points Decorated molecules Series expansion Generation diversity limited by scaffold
Linker design 2 fragments Linker molecules PROTAC, ternary complex Few linker geometric options
R-group replacement Scaffold + existing R-groups New R-group set Optimize one position Single-position only
Molecular optimization Lead molecule Improved analogs Lead optimization Improvement window narrow
Constrained generation Hard constraints (MW, fragments) Compliant molecules Patent / IP design Constraints overly restrictive

Read the full file on GitHub · 321 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. 4d ago First seen · 321 lines · 119 tokens per session scan A bd54e465c2a2

Subscribe to this mod's changes

bio-generative-design is a skill published in the GitHub repository GPTomics/bioSkills (1,199 stars, last pushed 19d ago), licensed MIT. It adds 119 tokens to every session and 4,139 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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