Borrowing it
Nothing to install: this file belongs to nimrodfisher/data-analytics-skills. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/nimrodfisher/data-analytics-skills/main/CLAUDE.mdgit clone --depth 1 https://github.com/nimrodfisher/data-analytics-skillsWrote 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.
[](https://agentmods.dev/instructions/nimrodfisher/data-analytics-skills/claude-md)<a href="https://agentmods.dev/instructions/nimrodfisher/data-analytics-skills/claude-md"><img src="https://agentmods.dev/badge/instructions/nimrodfisher/data-analytics-skills/claude-md/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.
<a href="https://agentmods.dev/instructions/nimrodfisher/data-analytics-skills/claude-md"><img src="https://agentmods.dev/badge/instructions/nimrodfisher/data-analytics-skills/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00981 | $0.00981 |
| Opus 5.5 | $0.00392 | $0.00392 |
| Sonnet 5.5 | $0.00196 | $0.00196 |
| Haiku 4.5 | $0.00098 | $0.00098 |
Grade A, and why
data-analytics-skills CLAUDE.md 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 1mo 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.
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.
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
What this repo is
A library of 31 reusable analytical skill definitions for Claude, organized into 6 categories. Skills are Markdown-based instruction sets with optional Python utilities. This is a documentation + reference library, not a deployable application.
Validation
python validate_skills.py
Checks every skill directory for: presence of SKILL.md, valid YAML frontmatter (name:, description:), and required sections (## When to use, ## Process, ## Inputs the skill needs, ## Output). Run after adding or modifying any SKILL.md.
Running Python utility scripts
Each skill's scripts/ folder contains standalone CLI tools. All accept --input or similar flags; most run with synthetic demo data when called without args.
python 01-data-quality-validation/programmatic-eda/scripts/data_overview.py --input data.csv
python 03-data-analysis-investigation/ab-test-analysis/scripts/ab_test_analyzer.py --control-n 5000 --control-conv 480 --treatment-n 5100 --treatment-conv 530
Architecture
Skill structure (every skill follows this pattern)
<NN-category>/<skill-name>/
├── SKILL.md # Required. YAML frontmatter + 4 mandatory sections
├── scripts/ # Optional. Standalone Python CLI utilities
├── references/ # Optional. Frameworks, glossaries, anti-patterns
└── assets/ # Optional. Output templates (Markdown, YAML, HTML)
Category organization
| # | Category | Skills |
|---|---|---|
| 01 | data-quality-validation | programmatic-eda, data-quality-audit, query-validation, schema-mapper, metric-reconciliation |
| 02 | documentation-knowledge | semantic-model-builder, analysis-documentation, data-catalog-entry, sql-to-business-logic, analysis-assumptions-log |
| 03 | data-analysis-investigation | cohort-analysis, segmentation-analysis, funnel-analysis, time-series-analysis, root-cause-investigation, ab-test-analysis, business-metrics-calculator |
| 04 | data-storytelling-visualization | insight-synthesis, visualization-builder, executive-summary-generator, dashboard-specification, data-narrative-builder |
| 05 | stakeholder-communication | technical-to-business-translator, stakeholder-requirements-gathering, analysis-qa-checklist, methodology-explainer, impact-quantification |
| 06 | workflow-optimization | analysis-planning, context-packager, peer-review-template, analysis-retrospective |
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.
- 1mo ago First seen · 96 lines · 981 tokens per session scan A 5b96c1753ff7
data-analytics-skills CLAUDE.md is an instructions file published in the GitHub repository nimrodfisher/data-analytics-skills (503 stars, last pushed 1mo ago), licensed MIT. It adds 981 tokens to every session, about $0.0039 per session on Opus 5.5. 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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Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
vscode model-prompts.instructions.md
Model-specific prompt authoring and registry guidelines.