Awesome Agent Harness

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

The agent that grows with you

DeepSeek Harness: Everything is a Plugin.

Langflow is a powerful tool for building and deploying AI-powered agents and workflows.

Turn any codebase, with its docs, SQL schemas, configs, and PDFs, into a queryable knowledge graph. A /graphify skill for Claude Code, Cursor, Codex, and Gemini CLI: local deterministic AST parsing, every edge explained, no vector store.

Lightweight coding agent that runs in your terminal

Open-source Python library for AI browser agents, plus Browser Use Cloud: stealth browsers and a hosted agent API.

Model Context Protocol Servers

An open-source long-horizon SuperAgent harness that researches, codes, and creates. With the help of sandboxes, memories, tools, skill, subagents and message gateway, it handles different levels of tasks that could take minutes to hours.

AI coding assistant skill (Claude Code, Codex, OpenCode, Cursor, Gemini CLI, and more). Turn any folder of code, SQL schemas, R scripts, shell scripts, docs, papers, images, or videos into a queryable knowledge graph. App code + database schema + infrastructure in one graph.

Compress tool outputs, logs, files, and RAG chunks before they reach the LLM. 20% fewer tokens for coding agents, 60-95% fewer tokens for JSON, same answers. Library, proxy, MCP server.

A coding agent for open models like Kimi K3 and GLM 5.3

The fastest, litest AI Gateway. Rust core with Python SDK. Call 100+ LLM APIs in OpenAI (or native) format with cost tracking, guardrails, load balancing, and logging [Bedrock, Azure, OpenAI, Anthropic, OpenAI, VertexAI, vLLM, Nvidia NIM]

A programming framework for agentic AI

Framework for orchestrating role-playing, autonomous AI agents. By fostering collaborative intelligence, CrewAI empowers agents to work together seamlessly, tackling complex tasks.

The best-benchmarked open-source AI memory system. And it's free.

an open source, extensible AI agent that goes beyond code suggestions - install, execute, edit, and test with any LLM

Hindsight: Agent Memory That Learns

Build resilient agents.

Build, run, and manage agent platforms.

Self-evolving Context Database for AI Agents. Unify Agent Memory, Knowledge RAG and Skills.

Multi-harness agentic plugin marketplace for Claude Code, Codex, Cursor, OpenCode, GitHub Copilot, and Google Antigravity

ChatDev 2.0: Dev All through LLM-powered Multi-Agent Collaboration

A hive mind communication platform

⌥ Coding agent with the IDE wired in. Built by Stencil Labs.

Cognee is the open-source AI memory platform for agents. Give your AI agents persistent long-term memory with small models for free

Local-first code intelligence graph for MCP and CLI. Builds a persistent map of your codebase so AI coding tools read only what matters, with benchmarked context reductions on reviews and large-repo workflows.

A lightweight, powerful framework for multi-agent workflows

The batteries-included agent harness.

A powerful MCP toolkit for coding, providing semantic retrieval and editing capabilities - the IDE for your agent

Integrate cutting-edge LLM technology quickly and easily into your apps

The open source AI engineering platform for agents, LLMs, and ML models. MLflow enables teams of all sizes to debug, evaluate, monitor, and optimize production-quality AI applications while controlling costs and managing access to models and data.

🚀 The fast, Pythonic way to build MCP servers and clients.

An open-source AI coding agent that lives in your terminal.

Beads - A memory upgrade for your coding agent

Specification and documentation for Agent Skills

The official Python SDK for Model Context Protocol servers and clients

Debug, evaluate, and monitor your LLM applications, RAG systems, and agentic workflows with comprehensive tracing, automated evaluations, and production-ready dashboards.

Scale computer-use 2.0 with open-source drivers, cross-OS fleets, and benchmarks for training, evaluation, and data generation.

A self-improving RLM agent for coding workflows and long-running autonomous tasks.

How Python does AI. Agents, realtime voice, image generation, embeddings. Every model, every interface, typed end to end.

Security scanner for AI agent skills. Detect vulnerabilities, malicious patterns, security risks, prompt injection, data exfiltration, and supply-chain risks in Claude Code, Codex, and MCP skills before you install them.

Open source agentic operating system

Build reliable customer-facing AI agents with Parlant: an interaction control harness optimized for controlled, consistent, and predictable LLM interactions.

🐫 CAMEL: The first and the best multi-agent framework. Finding the Scaling Law of Agents. https://www.camel-ai.org

Memori is agent-native memory infrastructure. A LLM-agnostic layer that turns agent execution and conversation into structured, persistent state for production systems. Built for enterprise, Memori works with the data infrastructure you already run, no rip-and-replace, and deploys across managed cloud, single-tenant cloud, VPC, and on-premises.

"DeepCode: Open Agentic Coding (Agent Harness & Loop Engineering & Multi-Agent Orchestration)"

Secure, Fast, and Extensible Sandbox runtime for AI agents.

Supercharge Your LLM Application Evaluations 🚀

Eigent: The Open Source Cowork Desktop - Local and Free Alternative to Claude Cowork and Codex