Math
Mathematical computations, formulas, statistics
xlsx
by Cam10001110101
"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"
calculator
by dangeles
Use when quantitative feasibility checks are needed, order-of-magnitude estimates must be established, or detailed models are required to validate design assumptions and identify rate-limiting steps
mathematician
by dangeles
Use when designing algorithms, analyzing complexity, selecting numerical methods, or verifying mathematical correctness for software implementations.
tikzjax-diagramming
by BitYoungjae
Create TikZ diagrams in Obsidian using TikZJax plugin. Use when visualizing geometric shapes, coordinate systems, game scenes, circuit diagrams, chemical structures, or complex technical drawings that require precise positioning.
role-algorithms:data-structures
by rnavarych
Implements and selects optimal data structures — hash tables (chaining, open addressing, Robin Hood, cuckoo), balanced BSTs (AVL, Red-Black, B-trees), heaps (binary, Fibonacci, pairing), tries, skip lists, segment trees, Fenwick trees, Bloom filters, Count-Min Sketch, HyperLogLog, and Union-Find. Use when choosing structures for performance constraints, implementing custom collections, or optimizing memory access patterns.
role-architect:cost-modeling
by rnavarych
Cost modeling expertise including infrastructure cost estimation, TCO calculation, build vs buy analysis, pricing model comparison, ROI projection, cost growth modeling, and breakeven analysis.
role-database:capacity-planning
by rnavarych
Database capacity and growth planning. Storage growth estimation, IOPS requirements, memory sizing (buffer pool, shared_buffers), connection count estimation, sharding triggers, read replica scaling, cost estimation per cloud provider. Load testing (pgbench, sysbench, YCSB, HammerDB). When to shard vs scale up vs read replicas. Use when planning database capacity, sizing infrastructure, or evaluating scaling strategies.
xlsx
by kcchien
"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"
Cross-Platform App Development Skill
by fal3
Strategies for developing apps that work across multiple Apple platforms, including adaptive layouts and multi-view implementations.
model-thinking
by kcchien
Mental models toolkit for clearer thinking, better decisions, and problem-solving. Use when users face complex problems, need decision support, want to analyze situations from multiple angles, organize information, understand systems, predict outcomes, or learn about specific mental models. Triggers include phrases like "help me think through", "analyze this problem", "what models apply here", "how should I decide", "evaluate options", or direct model references (e.g., "use second-order thinking", "apply inversion"). 中文觸發：「思維模型」、「幫我分析」、「決策分析」、「多角度思考」、「怎麼判斷」、「幫我想清楚」、「系統思考」、「風險評估」。
labour-law-calculator
by swarochish
"Calculate statutory benefits under Indian labour laws including PF, ESI, Gratuity, Bonus, Retrenchment Compensation, Notice Pay, and Leave Encashment with precise formulas"
meihua-yishu
by JWCodeWrote
A comprehensive traditional Chinese metaphysics agent ("Yi Jing" expert) that combines Mei Hua Yi Shu (Timing) with Gemini AI for modern interpretation.
3d-visualizer
by daffy0208
Expert in Three.js, 3D graphics, and interactive 3D visualizations
text_summarizer
by rscheiwe
Summarizes long text into key bullet points
xlsx
by kjgarza
"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"
text-statistics
by leegonzales
Analyze text for word count, reading time, complexity metrics, and readability scores. Use when user asks to analyze document length, calculate reading time, or assess text complexity.
mission-analysis-specialist
by LunCoSim
Perform astrodynamics calculations, trajectory design, and mission analysis. Use this skill for tasks involving "delta-v budget", "orbit propagation", "ground tracks", "eclipse analysis", "maneuver planning", "launch windows", or "transfer orbit design".
numpy
by G1Joshi
NumPy numerical computing with arrays. Use for numerical operations.
extended-thinking
by vanman2024
Deep reasoning with Claude's extended thinking feature for complex multi-step problems. Use when implementing think-aloud reasoning, complex analysis, or debugging difficult issues.
xlsx
by AnswerZhao
"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"
awwwards-animations
by DevMartinese
Professional React animation skill for creating Awwwards/FWA-level animations using GSAP (useGSAP), Motion (Framer Motion), Anime.js, and Lenis. Use when building premium scroll experiences, custom cursors, page transitions, text animations, parallax effects, micro-interactions, or any animation that needs to be 60fps and award-worthy. Triggers on requests for smooth scroll, ScrollTrigger, magnetic effects, reveal animations, horizontal scroll, pin sections, stagger effects, useScroll, useTransform, integration with Three.js/WebGL, algorithmic art, mathematical art, generative art, fractals, L-systems, flow fields, strange attractors, sacred geometry, geometric puzzles, Dudeney dissections, tangram, tessellations, Penrose tiles, kinetic typography, glitch effects, text explosion, morphing text, circular text, brutalist design, minimalist animation, neo-brutalism, or design philosophy mixing. React-first approach with proper cleanup and hooks.
tensorderive
by QuackFrog
Automated mechanics tensor derivation skill — couples LLM reasoning with Computer Algebra Systems (CAS) for journal-quality tensor theory derivation in solid mechanics, computational mechanics, and continuum mechanics. 6 specialized agents + 4 CAS MCP tool backends supporting tensor algebra, constitutive modeling, weak-form derivation, variational calculus, and automatic differentiation verification.
pyscf
by silico-quantum
PySCF (Python-based Simulations of Chemistry Framework) — modular pure-Python quantum chemistry library. Supports HF, DFT, MP2, CCSD, CCSD(T), CASSCF, TDDFT, geometry optimization, PES scanning, and spectroscopy. Based on pyscf.org documentation.
faion-growth-marketer
by faionfaion
"Growth marketing: experiments, analytics, A/B testing, AARRR metrics, retention."