productivity▌

JWT authentication and authorization for Spring Boot 3.5.x with token generation, refresh strategies, and role/permission-based access control. \n \n Covers token generation with JJWT, Bearer/cookie authentication, and stateless session management using Spring Security 6.x \n Supports database-backed and OAuth2 provider integration (Google, GitHub) with modern SecurityFilterChain configuration \n Includes refresh token rotation, token blacklisting, and key rotation strategies for production secu

Remove visible Gemini AI watermarks from images using reverse alpha blending. \n \n Provides a Python CLI tool that strips the bottom-right Gemini watermark without requiring HTML or server-side components \n Uses pre-captured watermark alpha maps (48px and 96px variants) and reverse alpha blending to reconstruct the underlying image \n Supports any image format that Pillow can read and write, with output format inferred from file extension \n Includes detailed algorithm documentation covering d

Only validate fields with cardinality starting with "1" as required.

This skill fetches OHLCV data from Yahoo Finance via yfinance and computes technical indicators locally (no API key required).

Text extraction from images using six OCR engines with preprocessing, cloud APIs, and structured output. \n \n Supports six OCR tools with decision tree: Tesseract and EasyOCR for local processing, PaddleOCR for CJK and tables, Google Vision and AWS Textract for cloud accuracy, Claude Vision for semantic understanding \n Includes full preprocessing pipeline (grayscale, deskew, denoise, binarization, morphological cleanup) to maximize accuracy on real-world images \n Provides Python and Node.js i

Implement comprehensive security hardening with defense-in-depth strategy through coordinated multi-agent orchestration:

This skill transforms a user's scattered multimodal assets (images, videos, audio) and ambiguous creative intent into a structured, executable prompt for the Seedance 2.0 video generation model. It acts as an expert prompt engineer, ensuring the highest quality output from the underlying model.

NeuroKit2 is a comprehensive Python toolkit for processing and analyzing physiological signals (biosignals). Use this skill to process cardiovascular, neural, autonomic, respiratory, and muscular signals for psychophysiology research, clinical applications, and human-computer interaction studies.

This skill guides you through implementing Metal kernels for PyTorch operators on Apple Silicon.

58 community-maintained best practices for shadcn/ui component development, organized by priority and impact. \n \n Covers 10 rule categories spanning CLI setup, component architecture, accessibility, styling, forms, data display, layout, composition, performance, and state management \n Each rule includes specific guidance on Radix primitives, Tailwind styling, React Hook Form integration, and accessibility compliance \n Prioritized by impact: CRITICAL rules for setup and architecture, HIGH for