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Found 209 Skills
Checks email quality before sending via Mailgun Inspect API. Use when previewing emails across clients, checking accessibility (WCAG), validating links, validating images, or analyzing email HTML/CSS compatibility.
Open Source License guidance, selection, compliance review, and drafting. Use this skill when users ask about choosing open source licenses, checking license compatibility, reviewing projects for OSS compliance, generating LICENSE/NOTICE files, or understanding specific license terms. Triggers include questions about MIT, Apache, GPL, BSD, LGPL, AGPL, MPL, copyleft, permissive licenses, license compatibility, SPDX identifiers, 木兰宽松许可证, Mulan PSL v2, or any OSS licensing topic.
Comprehensive guide for implementing Syncfusion Essential Studio Windows Forms (WinForms) controls in desktop applications. Use this skill when working with Syncfusion WinForms components or Essential Studio WinForms. Covers WinForms installation, localization, high DPI support, and .NET Core compatibility. Helps with adding controls, registering license keys, and troubleshooting WinForms component issues.
Guidelines for building AI-accessible web interfaces that work well with AI agents, automation tools, and screen readers. Use this skill whenever the user is building or reviewing a webpage, UI component, form, or frontend feature and any of these apply: they mention AI agents, automation, Playwright, web scraping, accessibility, a11y, aria, semantic HTML, or ask how to make their UI "agent-friendly", "AI-friendly", or "machine-readable". Also trigger when reviewing existing frontend code for accessibility or automation compatibility issues, even if the user doesn't explicitly mention AI.
iOS Simulator utility commands for screenshots, resizing, and common operations. Use these commands when taking simulator screenshots, resizing images for API compatibility, or performing common simulator operations.
Audit, implement, and fix web accessibility with a screen-reader-first lens. Use when building or reviewing UI components, forms, dialogs, navigation, dynamic content, or any interactive element. Covers WCAG 2.2 AA compliance, ARIA patterns, keyboard navigation, focus management, and assistive technology compatibility (NVDA, JAWS, VoiceOver). Trigger on: "accessible", "a11y", "screen reader", "WCAG", "ARIA", or when adding any interactive UI.
Adapt designs to work across different screen sizes, devices, contexts, or platforms. Implements breakpoints, fluid layouts, and touch targets. Use when the user mentions responsive design, mobile layouts, breakpoints, viewport adaptation, or cross-device compatibility.
Apply mechanism design (reverse game theory) to engineer incentive-compatible rules for allocation problems. Use this skill when the user needs to design auctions, voting systems, or matching markets, or when evaluating whether a proposed mechanism satisfies incentive compatibility and individual rationality constraints.
Integrate markstream-vue2 into a Vue 2 plus Vite app. Use when Codex needs Vite-friendly worker imports, `?worker` or `?worker&inline` setup for Mermaid or KaTeX, modern CSS ordering, or Vue 2 compatibility in a Vite-based repository.
Audit design documents for missing decisions, compatibility risks, rollout gaps, and observability omissions. Use whenever the user asks to review a design doc, architecture proposal, implementation-facing design, plan, or design-adjacent markdown file for completeness, migration strategy, rollback, data handling, or suggested additions without directly editing the document. Also trigger on short requests such as `review <file>.md` or `audit <file>.md` when the target looks like a design, plan, architecture, proposal, or decision document.
This skill must be used when initializing, maintaining, and executing by-harness workflows. It applies to scenarios where users mention by-harness, harness, initialization, continuous task decomposition, executing feat, plan/build/qa/fix, session_close, automatic resumption, runtime upgrade, or need to issue Java Gate, Distributed Java Gate, and three-tier frontend specifications to constrain model coding. This skill generates independent closed-loop scaffolding, sharded task storage, session closure tools, runtime upgrade tools, and issues Java hard rule gates, distributed Java coding contracts, three-tier frontend specifications, and BYAI HTML visual references; feature_list is only used as a legacy compatibility mirror.
Review Kafka schema changes (Avro, Protobuf, JSON Schema) for compatibility and evolution best practices using the Lenses MCP server. Detects breaking changes, missing defaults, schema drift and naming issues. Use when user says "review schema changes", "check schema compatibility", "will this schema break consumers" or asks about schema evolution. Do NOT use for creating new schemas from scratch or registering them in the cluster.