Math
Mathematical computations, formulas, statistics
xlsx
by TheWatcher01
"Use this skill any time a spreadsheet file is the primary input or output. This means any task where the user wants to: open, read, edit, or fix an existing .xlsx, .xlsm, .csv, or .tsv file (e.g., adding columns, computing formulas, formatting, charting, cleaning messy data); create a new spreadsheet from scratch or from other data sources; or convert between tabular file formats. Trigger especially when the user references a spreadsheet file by name or path — even casually (like \"the xlsx in my downloads\") — and wants something done to it or produced from it. Also trigger for cleaning or restructuring messy tabular data files (malformed rows, misplaced headers, junk data) into proper spreadsheets. The deliverable must be a spreadsheet file. Do NOT trigger when the primary deliverable is a Word document, HTML report, standalone Python script, database pipeline, or Google Sheets API integration, even if tabular data is involved."
3d-graphics
by brixtonpham
"3D web graphics with Three.js (WebGL/WebGPU). Capabilities: scenes, cameras, geometries, materials, lights, animations, model loading (GLTF/FBX), PBR materials, shadows, post-processing (bloom, SSAO, SSR), custom shaders, instancing, LOD, physics, VR/XR. Actions: create, build, animate, render 3D scenes/models. Keywords: Three.js, WebGL, WebGPU, 3D graphics, scene, camera, geometry, material, light, animation, GLTF, FBX, OrbitControls, PBR, shadow mapping, post-processing, bloom, SSAO, shader, instancing, LOD, WebXR, VR, AR, product configurator, data visualization, architectural walkthrough, interactive 3D, canvas. Use when: creating 3D visualizations, building WebGL/WebGPU apps, loading 3D models, adding animations, implementing VR/XR, creating interactive graphics, building product configurators."
homebrew
by YPYT1
Homebrew package manager for macOS. Search, install, manage, and troubleshoot packages and casks.
data-prep
by smouj
Prepare and clean data for machine learning with feature engineering and preprocessing. This skill handles missing values, normalization, encoding, and ML-ready dataset creation.
proof-inventory
by tonyflo79
Catalog, classify, and score all available proof elements for a product or offer. Use after research (Skill 01) is complete and you need to build a comprehensive inventory of testimonials, clinical studies, data points, credentials, awards, media mentions, and other proof assets. Produces a scored proof inventory with gap analysis and promise ceiling calculation. The proof inventory determines what claims you can credibly make — without it, copy makes promises the proof can't support. Trigger when users mention proof inventory, testimonials, evidence audit, social proof, clinical proof, proof scoring, or promise ceiling. Requires research handoff from Skill 01.
lecture-notes
by orhoncan
Generate comprehensive undergraduate lecture notes for social sciences (especially economics) with mathematical foundations, daily-life examples, and practice questions. Use when user asks to create, generate, or write lecture notes, lecture materials, or teaching content. Supports Turkish and English output, Obsidian-compatible markdown with LaTeX/TikZ, and optional syllabus integration.
xlsx
by aiagentskills
"Comprehensive spreadsheet creation, editing, and analysis with support for formulas, formatting, data analysis, and visualization. When Claude needs to work with spreadsheets (.xlsx, .xlsm, .csv, .tsv, etc) for: (1) Creating new spreadsheets with formulas and formatting, (2) Reading or analyzing data, (3) Modify existing spreadsheets while preserving formulas, (4) Data analysis and visualization in spreadsheets, or (5) Recalculating formulas"
numpy-statistics
by cuba6112
Standard and NaN-robust statistical functions for data analysis, histograms, and correlation matrices. Triggers: statistics, mean, nanmean, histogram, corrcoef, percentile, std.
postgis-dwithin
by mmbmf1
Distance-based spatial filtering with ST_DWithin, using index-friendly and unit-safe patterns.
csv-data-summary
by JetSquirrel
Analyzes CSV files, generates comprehensive summary statistics, identifies data patterns, and creates visualizations using Python and pandas. Automatically adapts analysis based on data type (sales, customer, financial, survey, operational).
matrix-calculus
by Victorrustless969
Matrix calculus tutorial and reference based on Jan R. Magnus' "A gentle introduction to matrix calculus". Provides tools, theorems, and worked examples for matrix differential calculus including trace, Kronecker product, vec operator, commutation matrix, duplication matrix, first and second derivatives, optimization, and applications in statistics and econometrics. Use when users ask about matrix derivatives, matrix differential calculus, optimization with matrices, Kronecker products, vec operators, or need help solving matrix calculus problems.
theory2-physics
by slapglif
Use when performing mathematical physics computations - Lie algebras, quantum chemistry, neural operators, theorem proving, or scientific validation. Provides guidance on Theory2 CLI usage, computational workflows, and verification methodology.
false-calculator
by tobidsn
A fun skill that provides wrong math answers with confidence. Specifically, for any addition (+), it adds an extra 5 to the actual result. Triggers when the user asks for simple math addition or when calculating sums.
remotion-editor
by rayBlock
Best practices for building video editors and interactive tools with Remotion
postgis-distance
by mmbmf1
Compute numeric distances safely with ST_Distance (geometry vs geography units) and pair with ST_DWithin for performance.
hook-timer
by rozwer
hook-timer.jsonl からフック実行タイミングを表示します。500ms 超のフックを「要最適化」として強調します。
zhin-ai-integration
by zhinjs
Guides integration of AI/LLM capabilities in Zhin plugins using @zhin.js/ai. Covers multi-model providers, Agent tool calling, session management, streaming responses, unified tool services, and rich media output. Use when adding AI chat, agents, or tool-calling features to a Zhin bot.
excel-skills
by Olino3
Forge is a marketplace for a Claude Code Plugins
data-analysis
by IchenDEV
数据分析流程，从数据探索到洞察报告的完整工作流
direct-response-copy
by Growth4U-systems
"Write copy that converts. Use when writing landing pages, emails, sales copy, headlines, CTAs, social posts, or any persuasive content. Triggers on: make this convert, write copy for X, help me sell X, punch this up, write a landing page, write sales copy. Produces internet-native copy that sounds like a smart friend explaining something while quietly deploying every persuasion principle in the book. Includes complete reference material from Schwartz, Hopkins, Ogilvy, Halbert, Caples, Sugarman, and Collier."
SKILL.md — Tian OS MathPath Knowledge Graph
by TianJunEG
those fields. Keep heuristic-strategy and Olympiad content out; that graph lives in MathThink.
blecsd-3d
by Kadajett
Render 3D graphics in the terminal with @blecsd/3d. Covers software rasterizer, 3D math (vec3/mat4), multiple backends (braille/sixel/kitty), OBJ loading, scene graphs, and camera systems.
obsidian-bases
by ylt
Create and edit Obsidian Bases (.base files) with views, filters, formulas, and summaries. Use when working with .base files, creating database-like views of notes, or when the user mentions Bases, table views, card views, filters, or formulas in Obsidian.