Math
Mathematical computations, formulas, statistics
threejs-builder
by CookSaw
Creates simple Three.js web apps with scene setup, lighting, geometries, materials, animations, and responsive rendering. Use for: "Create a threejs scene/app/showcase" or when user wants 3D web content. Supports ES modules, modern Three.js r150+ APIs.
hook-timer
by rozwer
Show hook execution timing from hook-timer.jsonl. Highlights slow hooks over 500ms.
visual-fidelity
by laivannha0202
Match or verify a UI against screenshots, visual references, layout coordinates, or pixel-fidelity requirements using semantic structure, bounding boxes, screenshots, and deterministic receipts.
geojson-points
by mmbmf1
Convert JSON rows with latitude/longitude fields into a GeoJSON FeatureCollection using raw PostGIS SQL.
threejs-textures
by epun
Three.js textures - texture types, UV mapping, environment maps, texture settings. Use when working with images, UV coordinates, cubemaps, HDR environments, or texture optimization.
postgis-buffer
by mmbmf1
Create buffer geometries with ST_Buffer, with correct units and safe patterns for geometry vs geography.
threejs-interaction
by epun
Three.js interaction - raycasting, controls, mouse/touch input, object selection. Use when handling user input, implementing click detection, adding camera controls, or creating interactive 3D experiences.
postgis-transform
by mmbmf1
Reproject PostGIS geometry using ST_Transform with correct SRID handling and safe usage patterns.
maths
by udnisap
Performs numerical and symbolic mathematics using NumPy, SciPy, SymPy, and mpmath. Use when the user needs linear algebra, arrays, optimization, integration, ODEs, symbolic expressions, equation solving, or arbitrary-precision arithmetic.
xlsx
by macnversion
"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"
data-analysis
by IHKREDDY
Data analysis workflows and patterns for exploring, transforming, and visualizing data. Use when working with data, creating reports, or when users mention "data analysis", "analyze data", "data exploration", or "reporting".
postgis-nearest
by mmbmf1
Find nearest features efficiently using PostGIS KNN (<->) and distance ordering (with SRID/unit guidance).
hytopia-plugins
by Abstrucked
Helps create and use plugins in HYTOPIA SDK games. Use when users need to add NPM packages, create reusable modules, or extend game functionality. Covers plugin requirements, installation, and best practices.
homework-pdf
by sondrejk
Turn a Markdown homework note (Obsidian or plain .md) into a neat, submission-ready PDF, with questions and answers laid out cleanly, math typeset and every embedded image included. Reviews the answers first and flags anything badly wrong or unanswered before building the PDF, and never changes the user's wording. Use this whenever the user wants to hand in, submit or print homework, an øving, exercise, assignment, lab report or innlevering written in Markdown, even if they only say "make a pdf of exercise 6", "gjør om øvingen til pdf", "lag pdf for innlevering", "export my answers" or point at a file in an øvinger folder.
subject-line-engine
by tonyflo79
Generate high-performing email subject lines from 18 formula categories derived from analysis of 2,684 Ben Settle emails. Use AFTER email bodies are written by E1 — subject lines must match the WRITTEN email, not a planned or hypothetical one. Produces multiple subject line candidates per email, scores them against 7 SL-specific criteria, and presents the top 5-10 for human selection. Targets 6-7 word sweet spot from corpus analysis. Trigger when users mention subject lines, email subjects, SL testing, open rate optimization, or writing subject lines for existing email drafts. Requires E1 email draft output.
gonol-build
by The-Interdependency
Construction, closure, and replay contract for gonols across UCNS and EDCM. Load this when building or reviewing UCNS geometry used by gonols, or building EDCM character, word, definition, or recursive-relation gonols. UCNS owns geometry; EDCM owns text construction. The required EDCM order is characters -> words -> definitions -> recursive gonol relations. Pronunciation is not required unless an explicitly declared later experiment makes it part of the construction. Do not load for unrelated geometry, ordinary prose editing, or measurement over already-closed gonols.
data-analysis
by IHKREDDY
Analyze datasets using Python with pandas, numpy, and visualization libraries. Generates statistical summaries, identifies patterns, creates charts, and provides insights. Use when analyzing CSV/Excel files, exploring data, creating visualizations, or when users mention data analysis, statistics, charts, or datasets.
manim-composer
by alexwelcing
Trigger when: (1) User wants to create an educational/explainer video, (2) User has a vague concept they want visualized, (3) User mentions "3b1b style" or "explain like 3Blue1Brown", (4) User wants to plan a Manim video or animation sequence, (5) User asks to "compose" or "plan" a math/science visualization. Transforms vague video ideas into detailed scene-by-scene plans (scenes.md). Conducts research, asks clarifying questions about audience/scope/focus, and outputs comprehensive scene specifications ready for implementation with ManimCE or ManimGL. Use this BEFORE writing any Manim code. This skill plans the video; use manimce-best-practices or manimgl-best-practices for implementation.
xlsx
by zhuxining
"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"
xlsx
by Jackiexiao
"QUERY LENGTH LIMIT EXCEEDED. MAX ALLOWED QUERY : 500 CHARS"
TsaoSciComputation
by SUNHAOJUN22
Route full-scale scientific-computation requests through explicit contracts, solver-aware preparation, convergence, physical validation, uncertainty, provenance, and fail-closed scientific acceptance.
xlsx
by zhongjis
"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."
stats
by rozwer
Show usage statistics from stats.jsonl — tool/skill usage counts, top 5, and optimization suggestions.
xlsx
by jyasuu
"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"