v1.1.17

Features

• Telemetry: Langfuse export now preserves user-defined span attributes. Fields prefixed with langfuse are passed through as-is; other custom attributes are collected into metadata so teams can observe custom instrumentation alongside built-in trace data.

Bug Fixes

• AG-UI: Fixed AGUI connections being closed too early when an AgentNode emitted an error Event. The server no longer sends RunErrorEvent immediately on the first error event; it waits until the final event carries an error after the agent run has finished. This allows agents such as GraphAgent to continue executing subsequent nodes instead of terminating the client connection prematurely.
• Telemetry: Fixed four classes of span status and output loss during agent interruption or failure:
  • Runner initialization failures now report error status through trace_runner() even when InvocationContext is not yet available (invocation_context is optional), while still writing the remaining runner business attributes.
  • LLM call failures converted by the retry layer into LlmResponse(error_code=...) are no longer recorded as successful spans; trace reporting now checks llm_response.error_code.
  • External cancellation via asyncio.CancelledError now marks the root invocation span as failed and preserves accumulated partial streamed text instead of leaving the span successful with missing output.
  • GeneratorExit during generator shutdown now backfills partial streamed text into agent_action, preventing already emitted content from being lost when the client disconnects or the stream is closed early.

Internal

• Build: Optimized installation speed for faster dependency setup and project bootstrap.