Skill Claude CodeCodex
Design, review, organize, and evolve scalable, secure, maintainable backend systems across any language, framework, runtime, database, API style, deployment model, or architecture. Detects whether a backend already exists and produces a safe improvement path before changing it; otherwise designs a new backend from…
Skill Claude CodeCodex
Backend security review and hardening for authentication, authorization, tokens, sessions, secrets, validation, injection, payments, uploads, webhooks, data exposure, rate limits, and deployment configuration. Use when asked to audit, security-review, harden, threat-check, or inspect backend code for vulnerabilities…
Skill Claude CodeCodex
Backend code quality for clean, production-ready, maintainable code. Adapts to the existing language, framework, and style. Covers functions, reusability, modern syntax, error prevention, readability, and security awareness. Use when writing, reviewing, or refactoring backend code for quality, maintainability, or…
Skill Claude CodeCodex
Perform complete database health, correctness, performance, reliability, and scalability audits across SQL, NoSQL, key-value, cache, search, and managed database systems. Detects the existing database and query layer, then checks indexes, query plans, schemas, constraints, relations, transactions, locks, pagination…
Skill Claude CodeCodex
Design, implement, review, and troubleshoot Pakistan 1LINK 1BILL integrations for bill inquiry, bill payment, fixed invoice or voucher collections, variable or top-up payments, credit-card bill payments, packages, payment-status inquiry, voids, PSID or consumer-number flows, reconciliation, and certification. Use when…
Skill Claude CodeCodex
Design, implement, review, and troubleshoot secure Easypaisa merchant payment integrations for Pakistani websites, mobile apps, and commerce platforms. Covers Easypaisa Mobile Account and OTC flows, approved hosted or direct integration methods, callbacks/postbacks, transaction verification, reversals, settlement…
Skill Claude CodeCodex
Design, implement, review, migrate, and troubleshoot secure JazzCash merchant payment integrations for Pakistani websites, apps, and commerce platforms. Cover HTTP POST redirection, approved APIs or hosted checkout, JazzCash Mobile Wallet, voucher payments, cards when enabled, secure hashes, callbacks, status checks…
Skill Claude CodeCodex
Design, implement, review, and troubleshoot secure Stripe integrations for one-time payments, Checkout, Payment Element, subscriptions, invoices, saved payment methods, refunds, disputes, webhooks, customer management, Stripe Tax, and Connect platforms or marketplaces. Use when adding Stripe to a web or mobile…
Skill Claude CodeCodex
Recreate websites, application screens, components, dashboards, landing pages, and responsive interfaces from attached screenshots or visual references as accurate, maintainable frontend code. Use when implementing a supplied screenshot, matching an existing UI image, converting mockups into code, rebuilding multiple…