mclust

mclust is a skill for Claude Code, Codex from LeoLin990405/r-analytics-skill. It costs 24 tokens per session (523 once invoked), scanned A, original, MIT.

An R package for model-based clustering using Gaussian mixture models, which represent groups as overlapping statistical distributions.

In plain words
What is it for?
Use it to select and inspect clustering models, estimate data density, classify new data, and perform model-based discriminant analysis.
Why use it?
It can compare different cluster counts and group shapes, while also showing classification uncertainty.

Skill for Claude CodeCodex

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

Good fit Use it to select and inspect clustering models, estimate data density, classify new data, and perform model-based discriminant analysis.

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Install with agentmods
npx agentmods add skills/leolin990405/r-analytics-skill/mclust
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 LeoLin990405/r-analytics-skill --skill mclust
Clone the repo
git clone --depth 1 https://github.com/LeoLin990405/r-analytics-skill

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 mclust

README.md
[![agentmods](https://agentmods.dev/badge/skills/leolin990405/r-analytics-skill/mclust/github.svg)](https://agentmods.dev/skills/leolin990405/r-analytics-skill/mclust)
Your own site
<a href="https://agentmods.dev/skills/leolin990405/r-analytics-skill/mclust"><img src="https://agentmods.dev/badge/skills/leolin990405/r-analytics-skill/mclust/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.

agentmods 80×15 button for mclust

Your own site · 80×15
<a href="https://agentmods.dev/skills/leolin990405/r-analytics-skill/mclust"><img src="https://agentmods.dev/badge/skills/leolin990405/r-analytics-skill/mclust.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 24 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 523 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 $0.00024 $0.00523
Opus 5 $0.00012 $0.00262
Sonnet 5 $0.00005 $0.00105
Haiku 4.5 $0.00002 $0.00052

Measured 9d ago against content hash 82dee45760e7, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

mclust 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 9d 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.

sub-skills/r-ml/r-ml-clustering/mclust/SKILL.md · 115 lines

What it actually says

mclust

Gaussian mixture modeling for model-based clustering.

Basic Clustering

library(mclust)

# Model-based clustering
mc <- Mclust(data)

# Summary
summary(mc)

# Results
mc$classification  # Cluster assignments
mc$G               # Number of clusters
mc$modelName       # Best model
mc$BIC             # BIC values

Specify Clusters

# Fixed number of clusters
mc <- Mclust(data, G = 3)

# Range of clusters
mc <- Mclust(data, G = 1:9)

Model Selection

# BIC plot
plot(mc, what = "BIC")

# Available models
# E = equal, V = variable
# I = spherical, E = diagonal, V = ellipsoidal
# EII, VII, EEI, VEI, EVI, VVI, EEE, EVE, VEE, VVE, EEV, VEV, EVV, VVV

Visualization

# Classification plot
plot(mc, what = "classification")

# Uncertainty plot
plot(mc, what = "uncertainty")

# Density plot
plot(mc, what = "density")

# All plots
plot(mc)

Density Estimation

# Density estimation
dens <- densityMclust(data)

# Plot
plot(dens, what = "density")
plot(dens, what = "persp")  # 3D

Discriminant Analysis

# Model-based discriminant analysis
mda <- MclustDA(train_data, train_labels)

# Predict
pred <- predict(mda, newdata = test_data)
pred$classification

Dimension Reduction

# Cluster with dimension reduction
mc <- MclustDR(data)

# Plot
plot(mc, what = "pairs")
plot(mc, what = "boundaries")

Bootstrap

# Bootstrap LRT
boot <- mclustBootstrapLRT(data, modelName = "VVV")
boot

ICL Criterion

# ICL (Integrated Complete-data Likelihood)
mc <- Mclust(data)
icl <- mclustICL(data)
plot(icl)
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. 9d ago First seen · 115 lines · 24 tokens per session scan A 82dee45760e7

Subscribe to this mod's changes

mclust is a skill published in the GitHub repository LeoLin990405/r-analytics-skill (5 stars, last pushed 6mo ago), licensed MIT. It adds 24 tokens to every session and 523 once invoked, about $0.0001 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 2026-09-03.

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