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Found 9,985 Skills
Scan a codebase for deepening opportunities, present them as a visual architecture report, then grill through whichever one you pick.
Build, integrate, and answer how-to questions for Stream Chat in Unreal Engine games and apps. Use for Unreal Engine / UE5 / C++ / Blueprint / UMG project work - plugin install per engine version, StreamChatClientComponent wiring on the HUD, ConnectUser and tokens, channels and messages, the shipped WBP_* chat widgets, theming, cooking, and iOS / Android / desktop packaging. Triggers on unreal, unreal engine, ue5, ue 5.7, ue 5.8, .uproject, .uplugin, Build.cs, umg, blueprint, widget blueprint, StreamChat plugin, UStreamChatClientComponent, UChatChannel, FChannelProperties, WBP_TeamChat, in-game chat, game chat. Chat only - there is no Stream Video or Feeds SDK for Unreal.
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 testing a RevenueCat Android integration. Covers the RevenueCat Test Store (test_ API key prefix, in dialog Success/Fail/Cancel choice), mockk based unit testing with an interface wrapper around Purchases, and a GitHub Actions CI pattern. Avoids Google Play sandbox for day to day test iteration.
Use this skill when implementing a RevenueCat purchase on Android. Covers awaitPurchase, PurchasesTransactionException, reading CustomerInfo entitlements to grant access, restoring purchases, and the six SDK managed steps that happen inside a single call.
Use this skill when adding and configuring the RevenueCat Android SDK (purchases-kt/purchases) in an app. Covers the Gradle dependency, Purchases.configure with PurchasesConfiguration, initial app user id strategy, and log level.
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.
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.
Multi-layer validation pattern - validates data at EVERY layer it passes through to make bugs structurally impossible, not just caught.
Evaluate and improve Claude Code commands, skills, and agents. Use when testing prompt effectiveness, validating context engineering choices, or measuring improvement quality.
DingTalk Workspace CLI (dws) - officially open-sourced cross-platform CLI tool from DingTalk. Provides 86 commands across 12 products: Contact, Chat, Bot, Calendar, Todo, Approval, Attendance, Ding, Report, AITable, Workbench, DevDoc. Built in Go with zero-trust security architecture. Use when user wants to operate DingTalk resources.