matminer-toy-property-prediction-starter

matminer-toy-property-prediction-starter is a skill for Claude Code, Codex from ma-compbio-lab/SkillFoundry. It costs 0 tokens per session (285 once invoked), scanned A, original, Apache-2.0.

A small materials-property prediction example that turns chemical formulas into numeric features with Matminer, then fits a scikit-learn regression model. It reports training predictions and which features mattered most.

In plain words
What is it for?
Use it to featurize a toy table of material formulas and train a deterministic example model for predicting a property.
Why use it?
It shows how composition data can be connected to a basic predictive model without starting with a large materials dataset.

Skill for Claude CodeCodex

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

Good fit Use it to featurize a toy table of material formulas and train a deterministic example model for predicting a property.

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Install with agentmods
npx agentmods add skills/ma-compbio-lab/skillfoundry/matminer-toy-property-prediction-starter
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 ma-compbio-lab/SkillFoundry --skill matminer-toy-property-prediction-starter
Clone the repo
git clone --depth 1 https://github.com/ma-compbio-lab/SkillFoundry

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 matminer-toy-property-prediction-starter

README.md
[![agentmods](https://agentmods.dev/badge/skills/ma-compbio-lab/skillfoundry/matminer-toy-property-prediction-starter/github.svg)](https://agentmods.dev/skills/ma-compbio-lab/skillfoundry/matminer-toy-property-prediction-starter)
Your own site
<a href="https://agentmods.dev/skills/ma-compbio-lab/skillfoundry/matminer-toy-property-prediction-starter"><img src="https://agentmods.dev/badge/skills/ma-compbio-lab/skillfoundry/matminer-toy-property-prediction-starter/github.svg" alt="Measured on agentmods" height="20"></a>

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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Your own site · 80×15
<a href="https://agentmods.dev/skills/ma-compbio-lab/skillfoundry/matminer-toy-property-prediction-starter"><img src="https://agentmods.dev/badge/skills/ma-compbio-lab/skillfoundry/matminer-toy-property-prediction-starter.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 285 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 $0.00000 $0.00285
Opus 5 $0.00000 $0.00143
Sonnet 5 $0.00000 $0.00057
Haiku 4.5 $0.00000 $0.00028

Measured 8d ago against content hash 3a3fd71bc65f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

matminer-toy-property-prediction-starter 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 8d ago.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/run_matminer_toy_property_prediction.py, tests/test_run_matminer_toy_property_prediction.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/materials-science-and-engineering/matminer-toy-property-prediction-starter/SKILL.md · 29 lines

What it actually says

Matminer Toy Property Prediction Starter

Use this skill to featurize a small composition table with matminer and fit a deterministic toy property predictor.

What it does

  • Loads a toy TSV of formulas and target values.
  • Uses matminer composition featurizers to build numeric features.
  • Fits a small scikit-learn regressor and summarizes training predictions plus feature importances.
  • Returns compact JSON suitable for materials-property-prediction starter workflows.

When to use it

  • You need a local starter for materials-property prediction.
  • You want a minimal example that connects composition featurization to a predictive model.

Example

slurm/envs/materials/bin/python skills/materials-science-and-engineering/matminer-toy-property-prediction-starter/scripts/run_matminer_toy_property_prediction.py \
  --input skills/materials-science-and-engineering/matminer-toy-property-prediction-starter/examples/toy_materials.tsv \
  --out scratch/materials/property_prediction_summary.json

Verification

  • Skill-local tests: python3 -m unittest discover -s skills/materials-science-and-engineering/matminer-toy-property-prediction-starter/tests -p 'test_*.py'
  • Repository smoke: python3 -m unittest tests.smoke.test_frontier_leaf_expansion_skills -v
Files

What ships with it

8 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. 8d ago First seen · 29 lines · 0 tokens per session scan A 3a3fd71bc65f

Subscribe to this mod's changes

matminer-toy-property-prediction-starter is a skill published in the GitHub repository ma-compbio-lab/SkillFoundry (39 stars, last pushed 4mo ago), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 285 tokens. 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 2026-09-03.

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