consensus-clustering-analysis

consensus-clustering-analysis is a skill for Claude Code, Codex from aipoch/medical-research-skills. It costs 51 tokens per session (2,025 once invoked), scanned A, original, MIT.

A method for finding stable groups of samples in a bulk gene-expression table, such as groups of patients with similar activity across many genes. It uses repeated clustering, PAC-based selection, and consensus-matrix and CDF charts to compare group counts.

In plain words
What is it for?
Use it to cluster samples from an expression matrix, compare candidate numbers of groups, select highly variable genes or a specified gene set, and export the resulting visualizations.
Why use it?
It helps assess whether apparent sample subtypes are consistent instead of relying on one arbitrary clustering result. It is intended for bulk expression data, not single-cell data, differential-expression testing, or general tables.

Skill for Claude CodeCodex

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

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is --output_dir ./output/ \.

Good fit Use it to cluster samples from an expression matrix, compare candidate numbers of groups, select highly variable genes or a specified gene set, and export the resulting visualizations.

Compare 6 skills from other repositories ↓
About the project

Medical Research Agent Skills is a library of agent instructions for medical and biomedical research, covering evidence analysis, study protocol design, data analysis, and academic writing. Researchers use it to guide compatible coding agents through common scientific workflows. The catalogue contains many of the library's skills and commands.

aipoch/medical-research-skills · 1,855 stars · on GitHub · aipoch.com

Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/aipoch/medical-research-skills
agentmods
npx agentmods add skills/aipoch/medical-research-skills/consensus-clustering-analysis

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 consensus-clustering-analysis

README.md
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Your own site
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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 consensus-clustering-analysis

Your own site · 80×15
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Per session 51 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,025 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. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • high Data Exfiltration · line 138
    Code or instructions that leak agent conversation context to external services, potentially exposing sensitive user interactions.
    Fix: Remove any code that sends prompts, responses, or session data externally. Preserve user privacy; never exfiltrate conversation content.
How audits are shown
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 $0.00051 $0.02025
Opus 5 $0.00026 $0.01012
Sonnet 5 $0.00010 $0.00405
Haiku 4.5 $0.00005 $0.00202

Measured 11d ago against content hash e38454ea939a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

consensus-clustering-analysis 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 11d 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.

awesome-med-research-skills/Data Analysis/consensus-clustering-analysis/SKILL.md · 265 lines

How it starts

The opening of the file, as written. The whole thing — 265 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Source: https://github.com/aipoch/medical-research-skills

Consensus Clustering Analysis

When to Use

Use this skill when you need to identify stable sample subtypes from a bulk expression matrix with ConsensusClusterPlus, compare candidate clustering settings with PAC, and export consensus matrix/CDF visualizations.

Do not use this skill for differential expression analysis, single-cell clustering, or non-expression tabular data.

When to Read External Files

Situation File to Read Purpose
Need algorithm details references/algorithm.md Consensus clustering, PAC scoring, and preprocessing assumptions
Need to run analysis scripts/main.R Execute: Rscript scripts/main.R --input_file ... --group_file ...
Encounter errors references/troubleshooting.md Common errors and solutions
Need CLI examples references/cli-guide.md Detailed CLI usage examples with verified local runs

Usage

Rscript scripts/main.R \
  --input_file ./expression_matrix.csv \
  --group_file ./groups.csv \
  --disease_group case \
  --max_k 4 \
  --output_dir ./output/ \
  --gene_selection highly_variable \
  --top_n 5000 \
  --reps 1000 \
  --p_item 0.8 \
  --p_feature 1.0 \
  --timeout_seconds 3600 \
  --seed 42

Arguments

Short Long Type Default Description
-i --input_file character required Expression matrix file (genes as rows, samples as columns)
-g --group_file character required Group information file (sample ID + group columns)
-d --disease_group character case Group label retained for clustering
-k --max_k integer 4 Maximum cluster count to evaluate
-o --output_dir character ./output/ Output directory
-m --gene_selection character highly_variable Gene selection mode: highly_variable or custom
-n --top_n integer 5000 Number of top variable genes to keep
-l --gene_list character NULL Custom gene list file when gene_selection=custom
-c --center_data logical TRUE Median-center each gene before clustering
-r --reps integer 1000 Consensus resampling repetitions
--p_item double 0.8 Sample resampling proportion
--p_feature double 1.0 Feature resampling proportion
-t --timeout_seconds integer 3600 Elapsed timeout in seconds
-s --seed integer 42 Random seed for reproducibility

Read the full file on GitHub · 265 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. 11d ago First seen · 265 lines · 51 tokens per session scan A e38454ea939a

Subscribe to this mod's changes

consensus-clustering-analysis is a skill published in the GitHub repository aipoch/medical-research-skills (1,855 stars, last pushed 1mo ago), licensed MIT. It adds 51 tokens to every session and 2,025 once invoked, about $0.0003 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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