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Open Next Router (ONR) is a lightweight, DSL-driven LLM gateway that routes requests, applies explicit compatibility transforms, and normalizes behavior across providers and channels.

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Core benefits

  • Atomic, nginx-like DSL: behavior is declared in DSL loaded from config/onr.conf, typically including files under config/providers/*.conf (see config/onr.conf).
  • Fast provider onboarding: patch quirks by editing .conf, not changing code.
  • Hot reload: reload onr.yaml / keys.yaml / models.yaml / config/onr.conf and included DSL files via SIGHUP.
  • No hidden magic: transforms are opt-in via directives (for example req_map, resp_map, sse_parse).
  • Streaming-aware normalization: handle SSE framing and provider streaming semantics.
  • Operational visibility: one-line logs with optional usage/cost extraction.