Matemàtiques
Càlculs matemàtics, fórmules i estadística
openhue
elizaOS
Control Philips Hue lights/scenes via the OpenHue CLI.
eln
jkitchin
Professional scientific documentation in org-mode electronic lab notebooks with date-based organization, comprehensive record-keeping of hypotheses, methods, results, reasoning, and outcomes for reproducible research
finances
whawkinsiv
"Use this skill when the user needs to build a financial model, calculate unit economics, understand MRR/ARR/churn, or figure out their quit number. Covers SaaS metrics, CAC/LTV, burn rate, cash flow modeling, and making unit economics legible for non-finance founders."
xlsx
Prat011
"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"
video-motion-graphics
dylantarre
Use when creating After Effects compositions, Premiere Pro motion, video titles, explainer videos, or broadcast motion graphics.
calculus-tutor-single-multivariable
sandraschi
Comprehensive calculus expert covering limits, derivatives, integrals, sequences, series, and multivariable calculus with rigorous proofs and practical applications
applied-mathematics-for-engineering
sandraschi
Applied math expert for engineering applications including Fourier analysis, transforms, and practical problem solving
jax
G1Joshi
JAX high-performance numerical computing. Use for ML research.
bio-alignment-files-bam-statistics
GPTomics
Generate alignment statistics using samtools flagstat, stats, depth, and coverage. Use when assessing alignment quality, calculating coverage, or generating QC reports.
bio-alignment-msa-statistics
GPTomics
Calculate alignment statistics including sequence identity, conservation scores, substitution matrices, and similarity metrics. Use when comparing alignment quality, measuring sequence divergence, and analyzing evolutionary patterns.
bio-causal-genomics-mendelian-randomization
GPTomics
Estimate causal effects between exposures and outcomes using genetic variants as instrumental variables with TwoSampleMR. Implements IVW, MR-Egger, weighted median, and MR-PRESSO methods for robust causal inference from GWAS summary statistics. Use when testing whether an exposure causally affects an outcome using genetic instruments.
bio-molecular-descriptors
GPTomics
Calculates molecular descriptors and fingerprints using RDKit. Computes Morgan fingerprints (ECFP), MACCS keys, Lipinski properties, QED drug-likeness, TPSA, and 3D conformer descriptors. Use when featurizing molecules for machine learning or filtering by drug-likeness criteria.
bio-causal-genomics-fine-mapping
GPTomics
Identify likely causal variants within GWAS loci using SuSiE for sum of single effects regression and FINEMAP for shotgun stochastic search. Computes posterior inclusion probabilities and credible sets to prioritize variants for functional follow-up. Use when narrowing GWAS association signals to candidate causal variants or building credible sets for functional validation.
linkedin-announcement-generator
dmccreary
This skill generates professional LinkedIn announcement text for intelligent textbooks by analyzing book metrics, chapter content, and learning resources to create engaging posts with key statistics, hashtags, and links to the published site. Use this skill when you need to create social media announcements about textbook completion or major milestones.
market-mechanics-betting
lyndonkl
Use to convert probabilities into decisions (bet/pass/hedge) and optimize scoring. Invoke when need to calculate edge, size bets optimally (Kelly Criterion), extremize aggregated forecasts, or improve Brier scores. Use when user mentions betting strategy, Kelly, edge calculation, Brier score, extremizing, or translating belief into action.
method-shorthand-jsdoc
EpicenterHQ
Move helper functions into return objects using method shorthand for proper JSDoc preservation. Use when factory functions have internal helpers that should expose documentation to consumers, or when hovering over returned methods shows no JSDoc.
obsidian-bases
guanyang
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.
time-value-of-money
JoelLewis
"Present value, future value, NPV, IRR, annuities, amortization schedules, and compounding conventions."
obsidian-dashboard
oldwinter
This skill should be used when users want to generate comprehensive statistics and overview of their Obsidian vault, including file counts, types, tags, links, folder structure, and other metadata analysis.
obsidian-bases
oldwinter
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.
stacks-arrays
stacksjs
Use when working with array utilities in Stacks - statistical operations (average, median, mode, standard deviation, z-score, percentile, covariance), array manipulation (unique, flatten, partition, shuffle, sample, move), containment checks, or the Arr facade. Covers @stacksjs/arrays.
risk-reward-ratio
Bhala-Srinivash
Calculate and evaluate risk-reward ratios for NSE/BSE equity trades. Includes R:R calculation, minimum R:R tables by win rate, trade filtering rules, and multi-target R:R analysis. Use when the user asks: "risk reward for this trade", "is this trade worth it", "R:R ratio", "what's my risk vs reward", "should I take this trade", "expected value of trade", or any question about whether a trade setup justifies the risk.
economic-order-quantity
kishorkukreja
When the user wants to calculate optimal order quantities, minimize total inventory costs using EOQ models, or determine the economic lot size. Also use when the user mentions "EOQ," "Wilson formula," "economic lot size," "order quantity optimization," "production batch size," "quantity discounts," "EPQ" (Economic Production Quantity), "backorder models," or "reorder point calculations." For multi-echelon systems, see multi-echelon-inventory. For stochastic models, see stochastic-inventory-models.
modeling
Logos-Liber
3D modeling fundamentals, techniques, and best practices