API Dev
API design, REST, GraphQL
rqalpha
by lzwme
RQAlpha 米筐开源事件驱动回测框架。支持A股和期货，模块化架构，可自由扩展；当用户需要使用 rqalpha 进行策略回测、模拟交易或Mod插件开发时使用。
backend-tests
by ibuilder
How to run and add Python tests in the Massing API/data services. Invoke when writing or running backend tests, or debugging a CI test-gate failure. Covers the run_tests.py runner, the manifest guard, per-test env isolation, DB-lock cleanup, and the two idioms (DB-backed vs engine/IFC).
asr-transcribe-to-text
by daymade
Transcribes audio and video files to text using Qwen3-ASR. Supports two modes — local MLX inference on macOS Apple Silicon (no API key, 15-27x realtime) and remote API via vLLM/OpenAI-compatible endpoints. Auto-detects platform and recommends the best path. Triggers when the user wants to transcribe recordings, convert audio/video to text, do speech-to-text, or mentions ASR, Qwen ASR, 转录, 语音转文字, 录音转文字. Also triggers for meeting recordings, lectures, interviews, podcasts, screen recordings, or any audio/video file the user wants converted to text.
API Design Reviewer
by alirezarezvani
Regular use of the linting, breaking change detection, and scoring tools ensures continuous improvement and helps maintain API quality throughout the development lifecycle.
senior-backend
by alirezarezvani
This skill should be used when the user asks to "design REST APIs", "optimize database queries", "implement authentication", "build microservices", "review backend code", "set up GraphQL", "handle database migrations", or "load test APIs". Use for Node.js/Express/Fastify development, PostgreSQL optimization, API security, and backend architecture patterns.
testing-course-samples
by microsoft
bria-ai
by Bria-AI
Controllable image generation and editing with Bria.ai commercially-safe AI models. Fine-grained control over what gets generated, edited, or removed — edit by text instruction, mask specific regions, add/replace/remove individual objects, control lighting, season, and style independently. Use this skill when building websites, apps, presentations, or documents that need product photos, hero images, icons, illustrations, or backgrounds. Also use for e-commerce product photography, background removal, image upscaling, style transfer, batch generation, and pipeline workflows (generate -> edit -> remove background). Triggers on tasks involving AI image generation, controllable image editing, background removal, or visual asset creation.
polar-typescript-sdk
by polarsource
Integrate Polar billing in server-side TypeScript applications using the versioned createPolar and createPolarCore clients. Use when implementing Polar customers and external IDs, checkout or customer portal sessions, customer-state entitlement checks, webhook validation and processing, API error handling, tree-shakable SDK calls, usage-event ingestion and metered billing, or migrating an application from the old Polar TypeScript SDK.
meta-ads
by kostja94
When the user wants to set up, optimize, or manage Meta (Facebook/Instagram) Ads. Also use when the user mentions "Meta Ads," "Facebook Ads," "Instagram Ads," "Meta Pixel," "Conversions API," "Advantage+," "lookalike audience," or "Meta retargeting."
tech-doc-style-chinese
by Fenng
在撰写、改写或审阅中文技术文档、文档首页、产品文案、界面文案、Markdown 文档或接口说明时使用。采用克制、准确、可扫读的中文技术写作风格：避免第二人称和宣传腔，统一使用直角引号，在可见正文中处理中文与英文或数字的留白，不改动代码字面量、JSON 键名、URL、API 路径等机器可读内容。如项目存在专属术语、版本展示或信息架构约定，再按需读取 references/Project-Overrides.md。
polar-python-sdk
by polarsource
Integrate Polar billing in server-side Python applications using the versioned Polar and PolarAsync clients. Use when implementing Polar customers and external IDs, checkout or customer portal sessions, customer-state entitlement checks, webhook validation and processing, API error handling, usage-event ingestion and metered billing, or migrating an application from the old Polar Python SDK.
polar-typescript-sdk
by polarsource
Integrate Polar billing in server-side TypeScript applications using the versioned createPolar and createPolarCore clients. Use when implementing Polar customers and external IDs, checkout or customer portal sessions, customer-state entitlement checks, webhook validation and processing, API error handling, tree-shakable SDK calls, usage-event ingestion and metered billing, or migrating an application from the old Polar TypeScript SDK.
polar-python-sdk
by polarsource
Integrate Polar billing in server-side Python applications using the versioned Polar and PolarAsync clients. Use when implementing Polar customers and external IDs, checkout or customer portal sessions, customer-state entitlement checks, webhook validation and processing, API error handling, usage-event ingestion and metered billing, or migrating an application from the old Polar Python SDK.
api-surface-review
by polarsource
Review changes to Polar's API contract — Pydantic schemas, FastAPI endpoints, OpenAPI output and the generated SDKs. Checks public vs private exposure, schema shape and naming, and whether the change breaks merchants or the generated clients. Use when a diff touches schemas.py, endpoints.py, docs/openapi.json or sdk/, or when the user asks whether an API change is breaking.
rest-patterns
by 0xDarkMatter
"Quick reference for RESTful API design patterns, HTTP semantics, caching, and rate limiting. Triggers on: rest api, http methods, status codes, api design, endpoint design, api versioning, rate limiting, caching headers."
writing-visual-tests
by comet-ml
Use when a developer wants to add a visual regression (screenshot) test for an Opik UI page or panel — e.g. "add a visual test for the trace sidebar", "screenshot each tab of the dataset panel", "visual regression test for the new empty state". Covers the page-object pattern, seeding via the test-helper-service, unique screenshot naming, per-test masking, baseline (re)generation, and the local-run-until-stable loop in tests_end_to_end/visual-tests/.
muapi-ai-fight-scene
by SamurAIGPT
Generate a high-cut-density action / fight scene by first composing a 16-cell storyboard image, then driving Seedance 2.0 image-to-video off that storyboard. Stacks GPT-Image-2 (character sheet + storyboard), Nano-Banana-2 (environment concept), and Seedance 2.0 i2v.
flutter-implement-json-serialization
by flutter
Create model classes with fromJson and toJson methods using dart:convert. Use when manually mapping JSON keys to class properties for simple data structures.
excalidraw-skill
by yctimlin
Programmatic canvas toolkit for creating, editing, and refining Excalidraw diagrams via MCP tools with real-time canvas sync. Use when an agent needs to (1) draw or lay out diagrams on a live canvas, (2) iteratively refine diagrams using describe_scene and get_canvas_screenshot to see its own work, (3) export/import .excalidraw files or PNG/SVG images, (4) save/restore canvas snapshots, (5) convert Mermaid to Excalidraw, or (6) perform element-level CRUD, alignment, distribution, grouping, duplication, and locking. Requires a running canvas server (EXPRESS_SERVER_URL, default http://localhost:3000).
n8n-integration-testing-patterns
by proffesor-for-testing
"API contract testing, authentication flows, rate limit handling, and error scenario coverage for n8n integrations with external services. Use when testing n8n node integrations."
Middleware Testing Patterns
by proffesor-for-testing
Agentic QE Fleet is an open-source AI-powered quality engineering platform designed for use with Claude Code, featuring specialized agents and skills to support testing activities for a product at any stage of the SDLC. Free to use, fork, build, and contribute. Based on the Agentic QE Framework created by Dragan Spiridonov.
n8n-expression-syntax
by czlonkowski
Validate n8n expression syntax and fix common errors. Use when writing n8n expressions, using {{}} syntax, accessing $json/$node variables, troubleshooting expression errors, or working with webhook data in workflows.
rivetkit-client-react
by rivet-dev
"RivetKit React client guidance. Use for React apps that connect to Rivet Actors with @rivetkit/react, create hooks with createRivetKit, or manage realtime state with useActor."
rivetkit-client-swiftui
by rivet-dev
"RivetKit SwiftUI client guidance. Use for SwiftUI apps that connect to Rivet Actors with RivetKitSwiftUI, @Actor, rivetKit view modifiers, and SwiftUI bindings."