cheminformatics

cheminformatics is a skill for Claude Code, Codex from itallstartedwithaidea/agent-skills. It costs 37 tokens per session (1,418 once invoked), scanned A, original, MIT.

Computational chemistry workflows for working with molecular structures and chemical libraries. It uses RDKit, a toolkit for reading molecules, calculating their properties, and comparing them.

In plain words
What is it for?
Parsing SMILES and SDF files, calculating molecular descriptors and fingerprints, searching for similar compounds, predicting drug properties and toxicity, preparing docking studies, and exploring chemical space.
Why use it?
Drug researchers cannot make and test every possible compound in a large library. These workflows narrow the list with computer-based checks before expensive laboratory work.

Skill for Claude CodeCodex

Part of the all-skills plugin — 73 skills shipped together

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/itallstartedwithaidea/agent-skills/cheminformatics
Any agent
npx skills add itallstartedwithaidea/agent-skills --skill cheminformatics
Clone the repo
git clone --depth 1 https://github.com/itallstartedwithaidea/agent-skills

Made for: Claude Code, Codex.

Or install all-skills, the plugin that ships this one along with the rest of its 73 skills.

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 cheminformatics

README.md
[![agentmods](https://agentmods.dev/badge/skills/itallstartedwithaidea/agent-skills/cheminformatics.svg)](https://agentmods.dev/skills/itallstartedwithaidea/agent-skills/cheminformatics)
Your own site
<a href="https://agentmods.dev/skills/itallstartedwithaidea/agent-skills/cheminformatics"><img src="https://agentmods.dev/badge/skills/itallstartedwithaidea/agent-skills/cheminformatics.svg" alt="Measured on agentmods" height="20"></a>
Per session 37 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,418 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 5.1 $0.00037 $0.01418
Opus 5 $0.00018 $0.00709
Sonnet 5 $0.00007 $0.00284
Haiku 4.5 $0.00004 $0.00142

Measured 5d ago against content hash 5f1be9988e59, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

cheminformatics 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 5d 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/scientific-research/cheminformatics/SKILL.md · 142 lines

How it starts

The opening of the file, as written. The whole thing — 142 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Cheminformatics

Part of Agent Skills™ by googleadsagent.ai™

Description

Cheminformatics provides computational chemistry workflows using RDKit for molecular property prediction, virtual screening, ADMET analysis, molecular docking preparation, and chemical space exploration. The agent generates reproducible cheminformatics pipelines that transform molecular structures (SMILES, SDF) into actionable predictions about drug-likeness, toxicity, and binding affinity.

Drug discovery generates vast chemical libraries that cannot all be synthesized and tested. Cheminformatics narrows the search space computationally: filtering by Lipinski's Rule of Five, predicting ADMET properties (Absorption, Distribution, Metabolism, Excretion, Toxicity), scoring docking poses, and clustering chemical space to identify diverse lead candidates. Each step eliminates compounds that would fail in later, more expensive stages.

This skill covers the molecular informatics workflow from SMILES parsing through descriptor calculation, fingerprint generation, similarity searching, property prediction, and visualization. It integrates with databases like PubChem and ChEMBL for compound retrieval and benchmarking against known actives and inactives.

Use When

  • Calculating molecular properties and descriptors
  • Screening compound libraries for drug-likeness
  • Predicting ADMET properties for lead compounds
  • Performing molecular similarity searches
  • Preparing structures for molecular docking
  • Visualizing chemical space and structure-activity relationships

How It Works

graph TD
    A[Molecular Input: SMILES/SDF] --> B[Parse + Validate Structures]
    B --> C[Calculate Descriptors]
    C --> D[Drug-likeness Filters]
    D --> E{Passes Lipinski?}
    E -->|No| F[Flag as Non-Drug-like]
    E -->|Yes| G[ADMET Prediction]
    G --> H[Virtual Screening Score]
    H --> I[Docking Preparation]
    I --> J[Ranked Candidate List]
    F --> K[Report with Flags]
    J --> K

Read the full file on GitHub · 142 lines

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. 5d ago First seen · 142 lines · 37 tokens per session scan A 5f1be9988e59

Subscribe to this mod's changes

cheminformatics is a skill published in the GitHub repository itallstartedwithaidea/agent-skills (36 stars, last pushed 4mo ago), licensed MIT. It adds 37 tokens to every session and 1,418 once invoked, about $0.0002 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.

Related

Other skills, from other repositories

obfuscated-rce-skill

Mathematical evaluator tool for math expressions.

Teycir/SkillsGuard · 16 tokens

cheminformatics

Cheminformatics provides computational chemistry workflows using RDKit for molecular property prediction, virtual screening, ADMET analysis, molecular docking preparation, and chemical space exploration.

itallstartedwithaidea/claude-googleadsagent · 37 tokens

database-lookup

Database Lookup provides unified programmatic access to 78+ scientific and public databases spanning chemistry (PubChem, ChEMBL), biology (UniProt, COSMIC, Ensembl), clinical (ClinicalTrials.gov, FDA), economics (FRED, World Bank), and intellectual property (USPTO, EPO).

itallstartedwithaidea/claude-googleadsagent · 66 tokens

geospatial-analysis

Geospatial Analysis provides workflows for satellite imagery processing, GIS operations with GeoPandas, spatial statistics, and Earth observation data analysis.

itallstartedwithaidea/claude-googleadsagent · 30 tokens

machine-learning

Machine Learning provides end-to-end ML pipeline construction with PyTorch and scikit-learn, covering model selection, training, evaluation, interpretability, hyperparameter tuning, and experiment tracking.

itallstartedwithaidea/claude-googleadsagent · 40 tokens

research-methodology

Research Methodology guides the agent through the complete scientific research lifecycle: hypothesis generation from literature gaps, experimental design with proper controls, systematic literature review, data collection protocols, and peer review preparation.

itallstartedwithaidea/claude-googleadsagent · 42 tokens