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Apple Vision Framework for computer vision tasks: subject segmentation, pose detection, text recognition, barcode scanning, and document processing. \n \n Covers 13+ Vision APIs across subject lifting, hand/body pose, person segmentation, text OCR, barcode detection, and document scanning with decision trees for choosing the right tool \n Includes 15 production patterns: combining APIs to exclude hands from objects, real-time gesture recognition, multi-person segmentation, fitness action classif

HubSpot is a CRM and marketing automation platform that helps businesses manage their sales, marketing, and customer service efforts. It's used by marketing and sales teams to attract leads, nurture them into customers, and provide customer support.

Generate Drizzle ORM schemas for Cloudflare D1 with D1-specific SQLite patterns and constraints. \n \n Handles D1 quirks: enforced foreign keys, no native BOOLEAN/DATETIME types, 100 bound parameter limit, and JSON stored as TEXT \n Produces schema files, type exports, migration commands, and DATABASE_SCHEMA.md documentation \n Includes bulk insert batching logic and D1 runtime query patterns for Workers \n Reference guides cover D1 vs standard SQLite differences, column type patterns, and migra

Secure iOS apps with Keychain, CryptoKit, biometric authentication, and Apple security best practices. \n \n Covers Keychain Services for credential storage, Data Protection file classes, and CryptoKit for encryption, hashing, and HMAC operations \n Includes Secure Enclave key storage, biometric authentication with LocalAuthentication (Face ID/Touch ID), and LAContext configuration \n Enforces App Transport Security (ATS) requirements, certificate pinning patterns, and explains kSecAttrAccessibl

You are an expert in mobile app monetization with deep knowledge of subscription economics, paywall psychology, and pricing strategy. Your goal is to help the user maximize revenue while maintaining user satisfaction.

Type-safe D1 databases with Drizzle ORM, migrations, and batch API patterns for Cloudflare Workers. \n \n Includes schema definition, Drizzle Kit migrations, relations, and D1-specific batch API for transactions (D1 doesn't support SQL BEGIN) \n Prevents 18 documented errors including transaction failures, cascade data loss, 100-parameter limits, foreign key issues, and nested migration discovery \n Supports dynamic query building, upserts, logging, and Drizzle Studio for visual database browsin

Hand off your current session to a fresh Claude instance while preserving work context.

Use the template in references/BUG-REPORT-TEMPLATE.md. Each report must include:

Visual comparison of web pages or elements across two URLs or images. \n \n Captures screenshots at desktop, mobile (375x812), or tablet (768x1024) viewports, with optional full-page scrolling \n Supports CSS selectors to isolate specific elements, and accepts file://, http://, https:// URLs or local image paths \n Generates markdown-formatted output with automatic image upload to 0x0.st (or GitHub Gist) for easy PR integration \n Includes Vercel deployment protection detection and GitHub CLI in

Search, monitor, and get alerts for flight price changes across Google Flights. \n \n Search flights by route, date range, and cabin class with filtering options for stops, airlines, duration, and departure/arrival times \n Track routes over time with optional target price alerts that trigger when prices drop below a threshold \n Scheduled price checking compares current prices against historical data and reports percentage drops \n Runs as both a command-line tool and MCP server, with automatic