HarnessRouter just dropped their infra layer open source.

One interface. 13+ agent harnesses including Codex, Claude Code, Hermes, DeepSeek, System One (powered by Jev), and more.

What this means:
→ Swap agents without rewriting your stack. Already using Codex or Claude Code? Drop Jev in without touching implementation.
→ Sessions, streaming, files, cancellations, failure handling — all unified.
→ Local execution with Unified Harness Protocol defining the task interface.
→ OpenAI Responses-compatible API.

Plug-and-play infra for multi-agent setups. No vendor lock-in. Just works.