Property Testing
Property Testing is a software testing approach that verifies properties hold for all possible inputs, using frameworks like fast-check.
Browse and install thousands of AI Agent skills in the Killer-Skills directory. Supports Claude Code, Windsurf, Cursor, and more.
This directory brings installable AI Agent skills into one place so you can filter by search, category, topic, and official source, then install them directly into Claude Code, Cursor, Windsurf, and other supported environments.
Property Testing is a software testing approach that verifies properties hold for all possible inputs, using frameworks like fast-check.
Common is a library that offers API key management and Vertex AI support for developers using the Gemini API.
verify-npc-data is a skill that validates NPC data by checking 5-stat completion, comparing with official Three Kingdoms 14 data, and identifying missing characters.
Common is a library of utilities for AI agent skills using the Gemini API, offering features like API key management and Vertex AI support.
effect-layers-services is a skill for composing services and layers in AI coding, enabling developers to define interfaces, bind implementations, and test vs live setups.
Developer-first error tracking and performance monitoring
A tool to get summaries and get past paywalls
A WASM virtual machine written in Go with 0 dependencies
docs-enrich-section is a technical skill that enriches documentation sections with details on what an API returns, why it exists, and when to use it.
coding-rules is a skill that enables a native lakehouse experience in Postgres, powered by DuckDB and Ducklake, for streamlined data analysis and management.
openspec-workflows is a Python library enabling data file conversions between formats such as BSON, JSON, NDJSON, Parquet, ORC, XLS, XLSX, and XML
Panel-based personal assistant with a plugin architecture for productivity workflows. AI agents share a workspace of notes, lists and other panels with the user. Supports Claude Code, Codex, and pi CLI agents with text and voice interfaces. Extend with custom plugins or use built-in plugins exported as skills with CLIs.