HarnessRouter open-sources a unified API to run Codex, Claude Code and more as agent backends
tom_doerr · x · 2026-10-23
- Project: HarnessRouter Community Edition, self-hosted under Apache-2.0, already 3.2k stars on GitHub.
- What it does: Turns existing agent harnesses — Codex, Claude Code, Hermes, PI, DeepSeek Harness and more — into plug-and-play backends behind one unified API, handling sessions, streaming, files, cancellation and failure handling.
- Protocol: Implements the open Unified Harness Protocol (UHP) with an OpenAI Responses-compatible API; claims 99.8% lower cost and 3.2× faster end-to-end latency.
- Positioning: Lets agent product builders skip harness engineering, using their own keys and infrastructure.
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