Harness Router Review 2026: One API for AI Agents
HarnessRouter Review 2026: One API for AI Agents If you are building an application that needs AI agents to perform real work—not just generate text—setting up the backend can become complicated quickly. Sandboxes, agent runtimes, tools, file handling, permissions, sessions, streaming, retries, and cost controls all have to work together. HarnessRouter is designed to simplify that process. It provides one API for bringing AI agent harnesses such as Codex, Claude Code, and Hermes into your own application. The platform says it handles the underlying agent infrastructure so developers can focus on building their product. What Is HarnessRouter? HarnessRouter is an AI-agent infrastructure platform that lets developers run agent harnesses inside their own products. The important distinction is between an AI model and an AI agent harness . A model generates tokens, while a harness adds the execution environment, tools, instructions, permissions, runtime, and other components nee...