Best AI GitHub Repos

DuckDB-powered skills for Claude Code: read any data file, attach and query DuckDB databases, search DuckDB/DuckLake docs, search past session logs, and install/update DuckDB extensions.

A set of skills focused on helping agents build Duende IdentityServer solutions.

Elixir language server (ElixirLS) for Claude Code. Provides code intelligence and diagnostics for .ex, .exs, and .heex files.

Evals is a framework for evaluating LLMs and LLM systems, and an open-source registry of benchmarks.

The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.

Exa AI web search, deep research, and content extraction. Provides MCP tools and research skills for comprehensive web search, people discovery, company research, academic papers, and more.

# Example Plugin A comprehensive example plugin demonstrating Claude Code extension options. ## Structure ``` example-plugin/ ├── .claude-plugin/ │ └── plugin.json # Plugin metadata ├── .mcp.json # MCP server configuration ├── skills/ │ ├── example-skill/ │ │ └── SKILL.md # Model-invoked skill (contextual guidance) │ └── example-command/ │ └── SKILL.md # User-invoked skill (slash command) └── commands/ └── example-command.md

# Explanatory Output Style Plugin This plugin recreates the deprecated Explanatory output style as a SessionStart hook. WARNING: Do not install this plugin unless you are fine with incurring the token cost of this plugin's additional instructions and output. ## What it does When enabled, this plugin automatically adds instructions at the start of each session that encourage Claude to: 1. Provide educational insights about implementation choices 2. Explain codebase patterns and decisions 3.

An open-source framework for making universal native apps with React. Expo runs on Android, iOS, and the web.

# fakechat Simple UI for testing the channel contract without an external service. Open a browser, type, messages go to your Claude Code session, replies come back. ## Setup These are Claude Code commands. Run `claude` to start a session first. Install the plugin: ``` /plugin install fakechat@claude-plugins-official ``` **Relaunch with the channel flag**. The server won't connect without this. Exit your session and start a new one: ```sh claude --channels plugin:fakechat@claude-plugins-

Expose your FastAPI endpoints as Model Context Protocol (MCP) tools, with Auth!

FastGPT is a knowledge-based platform built on the LLMs, offers a comprehensive suite of out-of-the-box capabilities such as data processing, RAG retrieval, and visual AI workflow orchestration, letting you easily develop and deploy complex question-answering systems without the need for extensive setup or configuration.

Fastly skills for AI Agents.

# Feature Development Plugin A comprehensive, structured workflow for feature development with specialized agents for codebase exploration, architecture design, and quality review. ## Overview The Feature Development Plugin provides a systematic 7-phase approach to building new features. Instead of jumping straight into code, it guides you through understanding the codebase, asking clarifying questions, designing architecture, and ensuring quality, resulting in better-designed features that in

Refine high-quality datasets and visual AI models

Figma design platform integration. Access design files, extract component information, read design tokens, and translate designs into code. Bridge the gap between design and development workflows.

Reference agents, skills, and data connectors for FSI workflows (investment banking, equity research, PE, wealth management). Claude Cowork plugins + Claude Managed Agents.

Code and model for the paper "Improving Language Understanding by Generative Pre-Training"

Google Firebase MCP integration. Manage Firestore databases, authentication, cloud functions, hosting, and storage. Build and manage your Firebase backend directly from your development workflow.

The API to search, scrape, and interact with the web at scale. 🔥

Claude Code plugin for Firetiger observability workflows and MCP-powered investigations.

Build and manage websites with Flint's AI website builder through natural conversation.

Cloud cost optimization for GCP infrastructure. Review changes for cost impact and auto-apply savings recommendations using the followrabbit CLI.