COOL Open-source (Apache-2.0) framework from UiPath to evaluate and benchmark coding agents and their skills: declarative YAML tasks run in a sandbox against Claude Code, Codex or Antigravity, weighted 0.0–1.0 scoring, A/B experiments and a CI gate via GitHub Action.
Favourite repos & links
Hand-picked repositories and tutorials worth your time — what they are and why they matter.
Open-source (MIT) multi-model orchestration layer for Claude Code: the frontier model plans in the main session, Sonnet and Haiku execute the volume work through global subagents, and fresh-context Opus verifiers guard quality — three config files, zero runtime code.
Open-source Office suite built for AI agents: a single binary (no Office install) that creates, reads and edits Word, Excel and PowerPoint from the command line, with built-in HTML/PNG rendering, an Excel formula engine, template merge and an MCP server.
Local-first dashboard showing what your coding agents actually did and what it cost: it reads the session logs Claude Code and Codex already write locally, joins them with work recorded over MCP and presents tokens, estimated costs, tasks and evidence — all on 127.0.0.1, no account, no cloud, no telemetry.
xAI's terminal coding agent, now open source (Apache 2.0): a Rust harness with a fullscreen TUI that reads your codebase, edits files, runs commands and extends via skills, plugins, hooks, MCP servers and subagents — interactively, headless for CI, or inside editors via the Agent Client Protocol.
A Python command-line tool that turns documentation sites, GitHub repositories and PDFs into ready-to-use Skills for Claude (and other LLMs), with automatic detection of the mismatches between the documentation and the real code: in three commands you bring a library's up-to-date knowledge into a Skill.
A tool that gives Claude Code (and any agent) a real browser to drive with Playwright scripts run inside a QuickJS WASM sandbox: pages stay alive across scripts, it connects to your running Chrome or a fresh Chromium, and it offers two control tiers — pixel-level and DOM-id.
A community distillation of how Claude Fable 5 approached problems, packaged as skills any model can run: classify the ask, define what «done» means with an explicit verification, gather evidence, decide, make the smallest correct change, verify by observation and report the outcome honestly. Three words: think, act, prove.
An AI meeting assistant that captures, transcribes and summarizes meetings entirely on-device: Whisper or Parakeet for transcription, Ollama (or a model of your choice) for summaries, with zero audio sent to the cloud.
Autonomous code auditor that orchestrates Claude (and optionally Gemini) to analyze a codebase, trace data-flow, and write a working proof-of-concept for every confirmed vulnerability — no API key required.
Official plugin that brings the Compound Engineering method — strategy, brainstorm, plan, work, review, learning note — to Claude Code, Codex, Cursor and six other agents.
facebook/astryxRepo
Open source React design system built over eight years inside Meta (13,000+ internal apps): 90+ components, StyleX as the styling engine, and a CLI with a JSON manifest built to be read by coding agents too.
clawkwork/clawkRepo
Go CLI that runs Claude Code or Codex inside a disposable Linux VM: repo mounted in, root in the guest, allow-listed network — while your host files, keys and keychain stay out of reach.
Rust hook that intercepts AI agents' shell commands and blocks destructive ones — rm -rf, git reset --hard, DROP TABLE — before they execute, with an explanation and safer alternatives.
obra/superpowersRepo
Composable skills framework that gives coding agents a complete methodology — brainstorming, planning, TDD, review — with automatic triggers on Claude Code, Codex, Cursor and other harnesses.
Local proxy that translates the Codex API to any provider: Claude, Gemini, DeepSeek, Kimi or a local model via Ollama, inside Codex CLI/App/SDK and even Claude Code.
affaan-m/ECCRepo
Everything Claude Code (ECC): an open-source layer of skills, instincts, persistent memory, hooks and security scanning that supercharges Claude Code, Codex, Cursor and other harnesses — 211k+ stars.
An open-source multi-agent framework that turns the AI coding agent you already run — Claude Code, Codex or a local model — into an autonomous red team: recon, exploit and report on authorized targets, from a browser «War Room» or the CLI.
An MCP plugin that gives Claude Code and other agents semantic search over your whole codebase: it indexes the project in a vector database and returns only the relevant snippets, instead of loading entire files on every request.
A Python package that gives programmatic access to Google NotebookLM: an nlm CLI and an MCP server with around forty tools to create notebooks, add sources and generate podcasts, videos, mind maps and summaries from the terminal or an AI agent.
Open source alternative to Semrush and Ahrefs: a self-hosted SEO suite (Docker or Cloudflare) for keywords, rank tracking, backlinks and audits, exposing an MCP server and skills so an AI agent works directly on your SEO data.
github/spec-kitRepo
GitHub's open-source toolkit for spec-driven development: the specify CLI turns a spec into a plan and tasks that AI agents (Claude Code, Copilot, Gemini, Codex) execute, instead of starting from the prompt.
BishopFox/aimapRepo
Tool that discovers exposed AI services on a network: it maps reachable model endpoints and LLM services, built for red teams and security assessments.
mindsdb/mindsRepo
Open-source workspace (formerly MindsDB, now MindsHub Cowork) where you delegate whole tasks — research, reports, scheduled operations — to agents that connect to your data and return publishable artifacts.
Production-ready development workflows for Claude Code, powered by specialized AI agents for code quality and automation.
Python utility that converts PDF, Office files, images and audio into clean Markdown, built for LLM pipelines.
pikpikcu/aireconRepo
Autonomous cybersecurity agent: pairs a self-hosted LLM (Ollama) with a Kali-style Docker sandbox and a TUI to automate recon and bug bounty — no API keys, no cloud.
SixHq/OvertureRepo
Open-source, locally running MCP server that maps a coding agent's execution plan (Claude Code, Codex, Cursor…) as an interactive flowchart before it writes any code.
Coding-assistant skill (Claude Code, Codex, Gemini CLI…) that turns a folder of code, SQL schemas, scripts and docs into a queryable knowledge graph — without sending your code anywhere.
Hierarchical document index for 'vectorless' RAG: instead of embeddings and similarity search, the LLM reasons over a tree structure to decide which section to open.
One command to find which models — out of hundreds, across providers — run on the hardware you have: it weighs RAM, VRAM and format to tell you what's realistic to run locally.
Optimized Ollama server setup for Mac Studio and other Apple Silicon Macs: headless configuration, automatic startup, resource tuning and remote management over SSH.
Step-by-step tutorial building your first AI agent in C# with the Microsoft Agent Framework.
How to expose AI agents behind a .NET Web API with the Microsoft Agent Framework.
Building a production-grade AI operations center in C# .NET by pairing AG-UI with the Microsoft Agent Framework.
An end-to-end RAG system in .NET 8 with OpenAI embeddings and the Qdrant vector database.
A full RAG stack in .NET 8: Azure Functions, Qdrant, a Neo4j graph and Hugging Face models.
The official Microsoft Agent Framework overview: concepts, components and programming model.
The official .NET Blog announcement of the Microsoft Agent Framework preview and its rationale.
Integrate OpenAI with the RAG pattern and vector search using Azure Cosmos DB for MongoDB (.NET)Link
Official tutorial: RAG and vector search in .NET using OpenAI and Azure Cosmos DB for MongoDB.
MongoDB's guide to integrating Semantic Kernel in C# with Atlas Vector Search.