proteomics-identification

proteomics-identification is a skill for Claude Code, Codex from TianGzlab/OmicsClaw. It costs 76 tokens per session (1,122 once invoked), scanned A, original, Apache-2.0.

A tool for summarising peptide identifications from a CSV produced by proteomics software such as MaxQuant, FragPipe, or DIA-NN. It counts peptide-spectrum matches, unique peptides, proteins, and related score or charge statistics.

In plain words
What is it for?
Use it to review peptide-level identification results and produce summary tables and a report.
Why use it?
It turns an existing peptide table into identification totals without requiring you to calculate them manually. It does not search raw mass-spectrometry data.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/tiangzlab/omicsclaw/proteomics-identification
Any agent
npx skills add TianGzlab/OmicsClaw --skill proteomics-identification
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 proteomics-identification

README.md
[![agentmods](https://agentmods.dev/badge/skills/tiangzlab/omicsclaw/proteomics-identification.svg)](https://agentmods.dev/skills/tiangzlab/omicsclaw/proteomics-identification)
Your own site
<a href="https://agentmods.dev/skills/tiangzlab/omicsclaw/proteomics-identification"><img src="https://agentmods.dev/badge/skills/tiangzlab/omicsclaw/proteomics-identification.svg" alt="Measured on agentmods" height="20"></a>
Per session 76 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,122 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00076 $0.01122
Opus 5 $0.00038 $0.00561
Sonnet 5 $0.00015 $0.00224
Haiku 4.5 $0.00008 $0.00112

Measured yesterday against content hash b273ecd1ba23, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

proteomics-identification 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 yesterday.

The scan reads SKILL.md. This mod also ships 1 executable file (proteomics_identification.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/proteomics/proteomics-identification/SKILL.md · 87 lines

How it starts

The opening of the file, as written. The whole thing — 87 lines — stays where its author put it; the contents beside it link to each section on GitHub.

proteomics-identification

When to use

The user has a peptide-level CSV (from MaxQuant peptides.txt, FragPipe combined_peptide.tsv, DIA-NN, or any peptide table with columns including peptide / protein / optionally score / charge) and wants identification summary statistics: total PSM count, unique peptide count, distinct protein count, optional median score, optional charge distribution.

This skill does NOT run a search engine — it summarises a peptide table that already exists. The --fdr flag is recorded as metadata only (no FDR re-thresholding is performed).

Inputs & Outputs

Inputs

  • File types: .csv, .tsv, .txt

Outputs

  • tables/peptides.csv
  • report.md
  • result.json
  • Produces artifact proteomics.peptide_table as tables/peptides.csv (csv)

Flow

  1. Load CSV (--input <peptides.csv>) or generate a demo peptide table (--demo).
  2. Filter by FDR via filter_by_fdr (proteomics_identification.py:105-126) — searches columns in order qvalueq-valueq_valuePEPpepfdr; if NONE found, logs a warning at :117 and passes through unchanged.
  3. Compute n_psms, n_unique_peptides, n_proteins, id_rate; optionally median score (proteomics_identification.py:147) and charge distribution (:151).
  4. Write tables/peptides.csv (proteomics_identification.py:235) + report.md + result.json (:241).

Gotchas

  • No search engine is invoked. This skill summarises an existing peptide CSV — it does NOT run MaxQuant / MS-GF+ / Comet / Mascot. Run a search engine upstream and feed the peptide-level CSV here.
  • --fdr ACTIVELY filters when an FDR column is present. proteomics_identification.py:229 calls filter_by_fdr(peptides, fdr_threshold=args.fdr). The helper (:105-126) tries columns in order qvalueq-valueq_valuePEPpepfdr. With NONE present, the run only logs a warning at :117 and passes the input through unchanged.
  • --input REQUIRED unless --demo. proteomics_identification.py:223 raises ValueError("--input required when not using --demo").
  • Optional columns are silently skipped when absent. A CSV without score omits summary["median_score"]; without charge omits summary["charge_distribution"]. Inspect the JSON before writing downstream consumers that assume those keys exist.
  • Column names must match exactly (lowercase): peptide, protein, score, charge. MaxQuant evidence.txt ships with Sequence / Proteins / Score / Charge — rename to lowercase first (e.g. df.rename(columns={"Sequence": "peptide", "Proteins": "protein", "Score": "score", "Charge": "charge"})).

Read the full file on GitHub · 87 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. yesterday First seen · 87 lines · 76 tokens per session scan A b273ecd1ba23

Subscribe to this mod's changes

proteomics-identification is a skill published in the GitHub repository TianGzlab/OmicsClaw (160 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 76 tokens to every session and 1,122 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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