metabolomics-peak-detection

metabolomics-peak-detection is a skill for Claude Code, Codex from TianGzlab/OmicsClaw. It costs 78 tokens per session (1,106 once invoked), scanned A, original, Apache-2.0.

A peak-finding tool for a CSV table containing metabolomics feature intensities. It identifies prominent peaks separately for each sample using configurable detection settings.

In plain words
What is it for?
Use it to detect peaks by prominence, height, and distance, then save the detected peaks and a report.
Why use it?
Large intensity tables can contain more signal than a person can inspect manually. Automated peak detection makes those candidate signals easier to collect and review.

Skill for Claude CodeCodex

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

Good fit Use it to detect peaks by prominence, height, and distance, then save the detected peaks and a report.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/tiangzlab/omicsclaw/metabolomics-peak-detection
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 metabolomics-peak-detection
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 metabolomics-peak-detection

README.md
[![agentmods](https://agentmods.dev/badge/skills/tiangzlab/omicsclaw/metabolomics-peak-detection/github.svg)](https://agentmods.dev/skills/tiangzlab/omicsclaw/metabolomics-peak-detection)
Your own site
<a href="https://agentmods.dev/skills/tiangzlab/omicsclaw/metabolomics-peak-detection"><img src="https://agentmods.dev/badge/skills/tiangzlab/omicsclaw/metabolomics-peak-detection/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 metabolomics-peak-detection

Your own site · 80×15
<a href="https://agentmods.dev/skills/tiangzlab/omicsclaw/metabolomics-peak-detection"><img src="https://agentmods.dev/badge/skills/tiangzlab/omicsclaw/metabolomics-peak-detection.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 78 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,106 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 $0.00078 $0.01106
Opus 5 $0.00039 $0.00553
Sonnet 5 $0.00016 $0.00221
Haiku 4.5 $0.00008 $0.00111

Measured 6d ago against content hash 4ac88804166f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

metabolomics-peak-detection 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 6d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (peak_detect.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/metabolomics/metabolomics-peak-detection/SKILL.md · 90 lines

How it starts

The opening of the file, as written. The whole thing — 90 lines — stays where its author put it; the contents beside it link to each section on GitHub.

metabolomics-peak-detection

When to use

The user has a feature × sample intensity matrix (output of metabolomics-xcms-preprocessing or any feature-level table) and wants per-sample peaks detected via scipy.signal.find_peaks with configurable prominence / height / distance. Sample columns are auto-detected by name (sample* or *intensity*); override with --sample-prefix <prefix>.

For raw LC-MS preprocessing use metabolomics-xcms-preprocessing. For normalisation use metabolomics-normalization.

Inputs & Outputs

Inputs

  • File types: .csv

Outputs

  • tables/detected_peaks.csv
  • report.md
  • result.json

Flow

  1. Load CSV (--input <feature_intensity.csv>) or generate a demo at output_dir/*.csv (peak_detect.py:281).
  2. Auto-detect sample columns: if --sample-prefix is set, use c.startswith(prefix) (peak_detect.py:294); else fall back to "intensity" in c.lower() or c.lower().startswith("sample") (:126).
  3. Per sample column, run scipy.signal.find_peaks with prominence=, height=, distance=.
  4. Write tables/detected_peaks.csv (peak_detect.py:306) + report.md + result.json.

Gotchas

  • Sample-column auto-detection is CASE-INSENSITIVE substring match. peak_detect.py:126 uses "intensity" in c.lower() or c.lower().startswith("sample"). Columns like Intensity_1, sample_a, SAMPLE.5 all match; columns like signal_1 or abundance do NOT — pre-rename or use --sample-prefix signal.
  • No sample columns ⇒ ValueError. peak_detect.py:130 raises ValueError("...") when neither auto-detection nor --sample-prefix matches any column.
  • --input REQUIRED unless --demo. peak_detect.py:285 raises ValueError("--input required when not using --demo").
  • --prominence default 1e4 is intensity-unit-dependent. Suitable for raw counts at 1e4-1e6 magnitude; for log-transformed data, set --prominence 0.5 or smaller. Wrong threshold silently yields zero peaks.
  • --distance is in INDEX UNITS (sample order), not seconds. peak_detect.py:270 notes default=5 — meaning at-least-5-row separation between adjacent peaks. If your features are RT-sorted, this corresponds to ~5 RT bins; if shuffled, the constraint is meaningless.
  • NaN values are silently treated as 0 by find_peaks. Pre-impute or filter NaN rows if they affect detection.

Read the full file on GitHub · 90 lines

Files

What ships with it

5 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. 6d ago First seen · 90 lines · 78 tokens per session scan A 4ac88804166f

Subscribe to this mod's changes

metabolomics-peak-detection is a skill published in the GitHub repository TianGzlab/OmicsClaw (160 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 78 tokens to every session and 1,106 once invoked, about $0.0004 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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