nrouter 3.1.1

nRouter SDK — one API key for models across six provider clouds. Works in Flutter and plain Dart.

Changelog

3.1.1

• Tracks the coordinated 3.1.1 nRouter SDK release. No Dart-specific API change; the shared gateway contract in spec/nrouter-sdk-spec.json is unchanged for Dart callers.
• First pub.dev publication since 2.1.1. Versions 2.2.0 through 3.1.0 were built and conformance-tested but not published, so this release skips them.

3.1.0

• Tracks the coordinated 3.1.0 release: repository metadata, SCM links and distribution references moved to nRouterGateway/nrouter-sdk.

3.0.0

• Advances Dart to the coordinated 3.0.0 major release train.
• Unified conversation memory with sliding window token pruning.
• Prompt template variable substitution and multi-tenant trace header injection.
• RFC 9110 Retry-After backoff and stream latency diagnostic tracking.

2.2.1

• Keeps Dart aligned with the coordinated nRouter SDK patch release; Dart wire behavior is unchanged.

2.2.0

• Joins the coordinated 2.2.0 release train shared by all nRouter SDKs.
• Includes the current full gateway contract, examples, and security gates.

2.1.1

• Add example/nrouter_example.dart for pub.dev documentation and package analysis.

2.1.0

• Cover all 15 nRouter gateway operations with named helpers.
• Add Anthropic Messages streaming with terminal-event validation.
• Preserve all 13 x-nr-* response metadata fields and nine typed errors.
• Add prompt, guardrail, cache, memory, sampling, multipart, and raw-byte support.
• Reject invalid API keys and malformed successful responses before reporting success.