Awesome Agent Harness

Build effective agents using Model Context Protocol and simple workflow patterns

OpenShell is the safe, private runtime for autonomous AI agents.

Open-source observability for your GenAI or LLM application, based on OpenTelemetry

🧱 easy, fast and local-first microVM runtime

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.

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.

The 100 line AI agent that solves GitHub issues or helps you in your command line. Radically simple, no huge configs, no giant monorepo—but scores >74% on SWE-bench verified!

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

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

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.

Our library for RL environments + evals

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

An AI Gateway, registry, and proxy that sits in front of any MCP, A2A, or REST/gRPC APIs, exposing a unified endpoint with centralized discovery, guardrails and management. Optimizes Agent & Tool calling, and supports plugins.

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

Next Generation Agentic Proxy for AI Agents and MCP servers

Open-source security automation platform for teams and AI agents

LangChain 🔌 MCP

Agent Skills as a Memory Layer

AI-Driven Life Cycle (AI-DLC) adaptive workflow steering rules for AI coding agents

Evaluation and Tracking for LLM Experiments and AI Agents

The platform for LLM evaluations and AI agent testing

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

Framework for evaluating and improving agents

Security scanner for AI agents, MCP servers and agent skills.

The NVIDIA NeMo Agent toolkit is an open-source library for efficiently connecting and optimizing teams of AI agents.

A benchmark for LLMs on complicated tasks in the terminal

Terminal coding agent powered by Kimchi's multi-model orchestration

A production-oriented multi-agent orchestration framework.

How real engineers run Claude Code and Codex: spec-driven planning, enforced TDD, persistent memory, and quality enforcement on all levels. Make your agents production-ready.

τ-Bench: A Benchmark for Tool-Agent-User Interaction in Real-World Domains

Open-source, end-to-end platform for evaluating, observing, and improving LLM and AI agent applications. Tracing · Evals · Simulations · Datasets · Gateway · Guardrails. Self-hostable. Apache 2.0.

Reference code for the Meta-Harness paper.

Evaluate and improve models and agents using environments

The Continuous-Improvement Stack for Agents. Our environment data and evals power agent improvement and monitoring.

Minimal and readable coding agent harness implementation in Python to explain the core components of coding agents.

CUGA is an open-source generalist agent harness for the enterprise, supporting complex task execution on web and APIs, OpenAPI/MCP integrations, composable architecture, reasoning modes, and policy-aware features.

Security Governance for Agentic AI

Batteries for your Pydantic AI agent.

Collection of evals for Inspect AI

Bring your own agent and build a self-improving agentic system. Automatically mine failures, optimize the agent harness, and gate against regressions.

Open-source benchmark for browser AI agents on daily tasks.

Open Python agent harness for production AI apps: tools, MCP, memory, workspace, telemetry, subagents, background tasks, and OmniServe APIs.

Evaluation harness for OpenHands V1.

A verified version of the WebArena Benchmark