Discover the most starred and trending open source tools tagged with #harness-engineering.
HarnessRouter Community Edition: the self-hosted, Apache-2.0 edition of the unified interface for agent harnesses. Run Codex, Claude Code, Hermes, PI, DSH, and more through one API, with sessions, streaming, files, cancellation, and failure handling. Implements the Unified Harness Protocol (UHP), an open standard. Your keys, your infrastructure.
A local multi-agent harness that works with your existing Claude Code, Codex subscriptions, allows you to run an office of agents
RAGFlow is a leading open-source Retrieval-Augmented Generation (RAG) engine that fuses cutting-edge RAG with Agent capabilities to create a superior context layer for LLMs
How Python does AI. Agents, realtime voice, image generation, embeddings. Every model, every interface, typed end to end.
The batteries-included agent harness.
"DeepCode: Open Agentic Coding (Agent Harness & Loop Engineering & Multi-Agent Orchestration)"
The open-source agent harness - the runtime layer that turns an LLM into a working agent.
Build agent that uses 80% less token and delivers better results.
Open Python agent runtime and harness for production AI applications, with an SDK for governed tools, durable runs, sandboxes, budgets, execution evidence, and evaluation integrations.
Open-Source Software factory for Open Models