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Found 384 Skills
Create, edit, repair, and validate Arabic-first or Arabic-English PowerPoint decks with native editable PPTX text, paragraph-level RTL, correct mixed Arabic/Latin/number behavior, native bullets, Arabic language metadata, and PowerPoint-first QA. Use together with the Presentations skill whenever a deck contains Arabic, requires RTL or bilingual slides, must remain editable as .pptx, or renders Arabic differently in PowerPoint, Keynote, Google Slides, or Codex preview.
Mandatory verification discipline before shipping any large or risky change — new public API fields or filters, provider or data-source behavior changes, billing and pricing logic, changed defaults that shape what customers see. Trigger BEFORE implementing whenever a change rests on an unverified assumption about real-world data or user behavior, or when the user says "risky change", "is this safe to ship", or "verify this assumption". Differentiator: validates that the change is a good idea using DeepAPI deep research (get a key at deepapi.co) and live measurement — not code correctness; unit tests do not count.
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 backend, building SaaS billing, accepting payments, creating connected accounts, or preparing an existing Stripe integration for production.
Find ways to cut your Vercel bill. Run after making changes to catch cost-heavy patterns early in Next.js projects.
Methodology for auditing a real non-technical small service business, understanding its operations, and designing an AI agent system (lead generation, qualification, estimation, booking, billing, reporting) that the owners interact with entirely by text message.
Use this skill when implementing subscription upgrades, downgrades, and plan switches via RevenueCat on Android. Covers GoogleProductChangeInfo, picking a Google replacement mode, and letting the SDK manage linkedPurchaseToken chaining.
Best practices for building Stripe integrations. Use when implementing payment processing, checkout flows, subscriptions, webhooks, Connect platforms, or any Stripe API integration.
Personalized academic writing assistant for university assignments in Chinese and English. Use when users need help writing/revising academic reports, project docs, technical analyses, research reviews, or case studies. Produces natural prose avoiding AI markers. Triggers: academic writing, assignment, report, technical analysis, research review, case study. | 个性化学术写作助手，适用于中英文大学作业。触发词：学术写作、作业、报告、技术分析、研究综述、案例研究、项目文档。
Manage Droplets, check App Platform, monitor databases, and view usage on DigitalOcean
Use this skill when handling errors from the RevenueCat Android SDK. Covers PurchasesError, the PurchasesErrorCode enum, the userCancelled flag on PurchasesTransactionException, and the recommended UI response per code.
Use this skill when handling failed renewals on Android with RevenueCat. Covers how Grace Period and Account Hold are reflected in CustomerInfo automatically, when to prompt the user, and how to trigger Google's in app messaging via showInAppMessages.
Use this skill when selling one time products on Android with RevenueCat. Covers fetching offerings, running awaitPurchase on a non subscription package, and relying on the SDK to acknowledge or consume automatically.