bulkrna-de

bulkrna-de is a skill for Claude Code, Codex from TianGzlab/OmicsClaw. It costs 54 tokens per session (1,038 once invoked), scanned A, original, Apache-2.0.

A workflow for comparing gene activity between two groups using bulk RNA sequencing count data. It identifies genes whose measured expression differs between conditions such as treatment and control.

In plain words
What is it for?
Use it with a gene-by-sample count table to produce differential-expression results, significant-gene tables, quality plots, and a report.
Why use it?
It applies statistical testing and false-discovery correction so differences are easier to assess than by comparing raw counts alone.

Skill for Claude CodeCodex

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

Good fit Use it with a gene-by-sample count table to produce differential-expression results, significant-gene tables, quality plots, and a report.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/tiangzlab/omicsclaw/bulkrna-de
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 TianGzlab/OmicsClaw --skill bulkrna-de
Clone the repo
git clone --depth 1 https://github.com/TianGzlab/OmicsClaw

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 bulkrna-de

README.md
[![agentmods](https://agentmods.dev/badge/skills/tiangzlab/omicsclaw/bulkrna-de.svg)](https://agentmods.dev/skills/tiangzlab/omicsclaw/bulkrna-de)
Your own site
<a href="https://agentmods.dev/skills/tiangzlab/omicsclaw/bulkrna-de"><img src="https://agentmods.dev/badge/skills/tiangzlab/omicsclaw/bulkrna-de.svg" alt="Measured on agentmods" height="20"></a>
Per session 54 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,038 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 Rogue Agent · line 3
    Skill modifies its own code, configuration, or behavior at runtime. Self-modification enables an agent to escalate privileges, disable safety constraints, or install persistent backdoors.
    Fix: Prevent the skill from modifying its own code, SKILL.md, or configuration files. Treat skill files as read-only at runtime.
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 $0.00054 $0.01038
Opus 5 $0.00027 $0.00519
Sonnet 5 $0.00011 $0.00208
Haiku 4.5 $0.00005 $0.00104

Measured 8d ago against content hash a603e0e81588, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

bulkrna-de 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 3 executable files (bulkrna_de.py, tests/__init__.py, tests/test_bulkrna_de.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/bulkrna/bulkrna-de/SKILL.md · 96 lines

How it starts

The opening of the file, as written. The whole thing — 96 lines — stays where its author put it; the contents beside it link to each section on GitHub.

bulkrna-de

When to use

The user has a bulk RNA-seq count matrix (genes × samples) and wants to know which genes change between two groups (control vs treatment, tumour vs normal, etc.). PyDESeq2 is preferred when ≥2 replicates per condition exist; Welch's t-test is the fallback for the single-replicate / no-PyDESeq2 case.

Inputs & Outputs

Inputs

  • File types: .csv
  • Accepts artifact bulkrna.count_matrix (csv)
  • Tabular structure: at least 3 columns

Outputs

  • tables/counts.csv
  • tables/de_results.csv
  • tables/de_significant.csv
  • tables/deseq2_results.csv
  • figures/de_barplot.png
  • figures/ma_plot.png
  • figures/pvalue_histogram.png
  • figures/volcano_plot.png
  • report.md
  • result.json
  • Produces artifact bulkrna.differential_results as tables/de_results.csv (csv)

Flow

  1. Load genes × samples raw count matrix.
  2. Auto-partition columns into control / treatment by name prefix.
  3. Pre-filter genes with total counts < 10 across all samples.
  4. Run PyDESeq2 (negative binomial GLM + Wald test) — fall back to Welch's t-test if PyDESeq2 missing or < 2 replicates per condition.
  5. Apply Benjamini–Hochberg FDR correction.
  6. Filter DEGs by --padj-cutoff and --lfc-cutoff.
  7. Render volcano / MA / p-value histogram and emit report.

Gotchas

  • PyDESeq2 silently falls back to Welch's t-test when fewer than 2 replicates per condition are detected or pydeseq2 is not importable. Check result.json["method_used"] to confirm which engine actually ran — the volcano-plot title alone does not surface the fallback.
  • LFCs are unshrunk by design. Suitable for hypothesis testing (padj thresholds), but for ranking / visualisation that emphasises high-confidence effects, apply apeglm or ashr shrinkage outside this skill.
  • VST / rlog transformations are visualisation-only. Do not feed transformed counts back into this skill — DE testing always wants raw integer counts.
  • Sample group detection is prefix-based. Columns must start with --control-prefix (default ctrl) or --treat-prefix (default treat); columns matching neither prefix are silently dropped.
  • Pre-filter removes low-count genes (total < 10). This improves dispersion estimation but means the input gene count is not the testing gene count — result.json["n_tested"] is authoritative.

Read the full file on GitHub · 96 lines

Files

What ships with it

7 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 · 96 lines · 54 tokens per session scan A a603e0e81588

Subscribe to this mod's changes

bulkrna-de is a skill published in the GitHub repository TianGzlab/OmicsClaw (160 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 54 tokens to every session and 1,038 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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