Awesome Agent Harness

AI Observability & Evaluation

Visual testing tool for MCP servers

Instant, Concurrent, Secure & Lightweight Sandbox for AI Agents.

AI Agent Engineering Platform built on an Open Source TypeScript AI Agent Framework

Orchestrate multiple coding agents from desktop and mobile

Open source MCP Servers for AWS

Manage multiple AI terminal agents like Claude Code, Codex, OpenCode, and Amp.

Flexible and powerful framework for managing multiple AI agents and handling complex conversations

Agentic orchestrator for parallel coding agents — plans tasks, spawns agents, and autonomously handles CI fixes, merge conflicts, and code reviews.

The sandbox agent framework.

This is a simple demonstration of more advanced, agentic patterns built on top of the Realtime API.

Plano is an AI-native proxy and data plane for agentic apps — with built-in orchestration, safety, observability, and smart LLM routing so you stay focused on your agents core logic.

Orchestrate sandboxed coding agents in TypeScript with sandcastle.run()

TypeScript AI agent orchestration framework with dynamic workflows. Describe the goal, not the graph: a coordinator plans the task DAG at runtime and runs it on any LLM (Claude, ChatGPT, Gemini, DeepSeek, or local models).

Demo of a customer service use case implemented with the OpenAI Agents SDK

Omnigent is an open-source AI agent framework and meta-harness: orchestrate Claude Code, Codex, Cursor, Pi, and custom agents — swap harnesses without rewriting, enforce policies and sandboxing, and collaborate in real time from any device.

结合知识库、知识图谱管理的 多租户 Agent Harness 平台。 An agent harness that integrates a LightRAG knowledge base and knowledge graphs. Build with LangChain + Vue + FastAPI, support DeepAgents、MinerU PDF、Neo4j 、MCP.

🧊 Open source LLM observability platform. One line of code to monitor, evaluate, and experiment. YC W23 🍓

Python SDK for AI agent monitoring, LLM cost tracking, benchmarking, and more. Integrates with most LLMs and agent frameworks including CrewAI, Agno, OpenAI Agents SDK, Langchain, Autogen, AG2, and CamelAI

Orchestration layer for coding agents (Claude Code, Codex)

Your super agent for work: local-first, learn your working context in mins and never forget it.

All-in-One Sandbox for AI Agents that combines Browser, Shell, File, MCP and VSCode Server in a single Docker container.

Build and deploy AI Agents on Cloudflare

ByteRover CLI (brv) - The portable memory layer for autonomous coding agents (formerly Cipher)

AI Agent Governance Toolkit — Policy enforcement, zero-trust identity, execution sandboxing, and reliability engineering for autonomous AI agents. Covers 10/10 OWASP Agentic Top 10.

Latitude is the open-source ai monitoring platform.

Your agent in your terminal, equipped with local tools: writes code, uses the terminal, browses the web. Make your own persistent autonomous agent on top!

The open-source LLMOps platform: prompt playground, prompt management, LLM evaluation, and LLM observability all in one place.

Self-hosted, open-source agent skill registry for enterprises. Publish & version skill packages, govern with RBAC and audit logs, deploy on-premise with Docker or Kubernetes.

Plugins from the Cursor community

Enterprise AI Platform with guardrails, MCP registry, gateway & orchestrator

Next Generation Agentic Proxy for AI Agents and MCP servers

Real-time transport layer for Java AI agents. Build once with @Agent — deliver over WebSocket, SSE, gRPC, and WebTransport/HTTP3. Talk MCP, A2A and AG-UI.

Open-source security automation platform for teams and AI agents

TinyAGI is the agent teams orchestrator for One Person Company. (fka TinyClaw)

Agent Skills as a Memory Layer

Devon: An open-source pair programmer

Evaluation and Tracking for LLM Experiments and AI Agents

A lightweight, powerful framework for multi-agent workflows and voice agents

OpenSource Claude Cowork. A desktop AI assistant that helps you with programming, file management, and any task you can describe.

The platform for LLM evaluations and AI agent testing

Cascading runtime for AI agents. Optimize cost, latency, quality, and policy decisions inside the agent loop.

Amazon Bedrock Agentcore accelerates AI agents into production with the scale, reliability, and security, critical to real-world deployment.

Laminar - open-source observability platform purpose-built for AI agents. YC S24.

Agent Orchestration Command Center

Headless CLI client for stateful Agent Client Protocol (ACP) sessions

Claude Code Dedicated Development Harness - Achieving High-Quality Development Through an Autonomous Plan→Work→Review Cycle

Skills, MCP servers, Custom Agents, Agents.md for SDKs to ground Coding Agents

A benchmark for LLMs on complicated tasks in the terminal

One brain, many harnesses. Portable .agent/ folder (memory + skills + protocols) that plugs into Claude Code, Cursor, Windsurf, OpenCode, OpenClaw, Hermes, or DIY Python — and keeps its knowledge when you switch.