Open-source alternatives to Playwright Skill

Agents.md is a configuration framework designed to standardize how AI coding assistants interact with a repository. It provides a structured format for defining project context, behavioral guidelines, and operational instructions, ensuring that AI tools maintain consistency and adhere to project-specific standards throughout the development process. The system distinguishes itself through a hierarchical configuration approach, allowing developers to define settings that inherit and override instructions across different subdirectories. By utilizing markdown-based files, it enables the injecti

Let your coding agent debug like a human developer. Set breakpoints, step through code, evaluate expressions — the way you actually debug.

A Claude skill that audits designs against 19 professional design rules.

assistant-ui is a React interface framework and component kit designed for building conversational user interfaces for artificial intelligence services. It provides a collection of reusable components to render chat windows and interaction histories that connect to large language model backends. The framework uses a composable architecture and a provider pattern to decouple UI components from specific backend implementations. Visual customization is handled through a CSS-variable theming system, while adapter-based integration standardizes different API responses into a consistent format for

The missing linter and lsp for AI coding assistants. Validate CLAUDE.md, AGENTS.md, SKILL.md, hooks, MCP. Plugin for all major IDEs included, with autofixes.

MCP server that orchestrates language servers into agent-native workflows. 65 tools, 30 CI-verified languages.

Automatically updates terminal window titles based on Claude Code tasks—stop guessing which terminal is which.

Bub it. Build it. A hook-first runtime for agents that live alongside people.

CopilotKit is an agentic framework designed to integrate large language models into application frontends, enabling natural language control over software features and data. It provides the infrastructure to build intelligent assistants that manage conversation history, track application state, and execute complex workflows through conversational prompts. The framework distinguishes itself by its ability to render dynamic, interactive user interface components in real time based on model outputs. By utilizing a standardized communication protocol, it maps natural language intents to executabl

CrewAI is a multi-agent orchestration framework designed for building autonomous systems that execute complex, multi-step workflows. It provides a development platform where specialized agents are defined with specific roles, goals, and tool sets to perform tasks collaboratively. By leveraging a declarative workflow engine, the system manages task dependencies, state transitions, and execution logic, allowing for the creation of structured, stateful sequences of operations. The framework distinguishes itself through its hierarchical management capabilities, which utilize manager agents to coo

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Outlines is a library designed to ensure machine-readable output from generative models by applying programmatic constraints during the token sampling process. It functions as a toolkit for forcing large language models to generate text that strictly adheres to JSON schemas, regular expressions, and formal grammars, enabling the integration of model responses into existing software systems. The library distinguishes itself by integrating formal language rules directly into the sampling loop. It achieves this by converting regular expressions into deterministic finite automata and utilizing lo

Open-source, local-first memory for any tool-capable LLM agent.

Official skill collection for EmblemAI agents — 200+ crypto tools across 7 blockchains

This project is an autonomous agent workflow engine and multi-agent orchestration framework. It provides a runtime for managing agent lifecycles and a provider-agnostic abstraction layer for interacting with multiple large language model backends through standardized requests and structured outputs. The framework features a reliability layer for output verification, utilizing sampling-based majority voting and generator-evaluator feedback loops to refine model responses. It supports complex coordination patterns including sequential chaining, parallel execution with fan-in aggregation, and re

Claude Code skill — generate cross-client HTML email with MJML. Outlook-safe, Gmail-optimized, WCAG 2.1 AA accessible.

Agent Skills used by the Sentry team for development.

A collection of Agent skills and Claude Code plugins for HashiCorp products.

Agent Skills lifecycle toolkit: mine repeated coding-agent workflows, audit and personalize skills, and generalize personal skills for public release.

Diffusers is a PyTorch-based library and generative AI framework used to build, train, and deploy diffusion pipelines for producing multi-modal media. It provides a suite of tools for generating images, video, and audio from natural language descriptions, as well as specialized systems for text-to-image generation. The project differentiates itself through a modular architecture that separates noise schedulers, pretrained model blocks, and pipeline compositions. This structure allows for the construction of custom generation workflows and the ability to swap individual components of the diffu

Transformers is a comprehensive library for machine learning that provides a unified interface for training, fine-tuning, and deploying transformer-based models. It supports a wide range of tasks, including text classification, language modeling, question answering, and sequence-to-sequence translation, while offering specialized architectures for both text and vision processing. The framework includes tools for managing the entire model lifecycle, from data preprocessing and tokenization to distributed training and inference. The library features extensive support for model optimization and

The AI-native browser automation library. Snapshot ref targeting — born from OpenClaw, built for agents, by agents.

Planning copilot for coding agents

Claude Code skill for analyzing Move packages against the official Move Book Code Quality Checklist