ag-ui-protocol/ag-ui release/2026-09-09

Release 2026-09-09

on GitHub

Packages Published

Python (PyPI) - published at 15:22:36 UTC

ag-ui-langgraph@0.0.45

• Endpoint helpers now forward FastAPI route kwargs (name, tags, summary, operation_id, dependencies, include_in_schema) so agent routes embed cleanly in existing APIs.
• Populate RUN_FINISHED.usage and RUN_ERROR.usage terminal-event token usage from provider metadata (previously always absent in Python).
• Record token usage from non-streaming model calls via OnChatModelEnd; streaming-disabled models previously reported no usage.
• Cap token counts at Number.MAX_SAFE_INTEGER (2**53 - 1) to match the TypeScript protobuf decoder.
• Preserve plain string entries in multimodal message content conversion, keeping their original order alongside structured blocks.
• Guard reasoning content blocks against non-mapping values; AIMessageChunk(content=["hello"]) no longer raises and kills the stream.
• Reject whitespace-only or leading-whitespace image_url payloads that previously bypassed the empty-value guard.

Breaking changes

• image_url payloads that are whitespace-only or have leading whitespace are now rejected; re-verify attachment inputs.
• Token counts are now capped at 253 - 1 rather than int64's 263 - 1.

Java (Maven Central) - published at 16:57:07 UTC

java-core@0.1.1

• Added REASONING("reasoning") to the Role enum, enabling Role.fromValue("reasoning") to succeed.
• Added a ReasoningMessage type to the sealed Message hierarchy for representing reasoning in conversation history.
• ReasoningMessage carries an optional encryptedValue, retaining encrypted chain-of-thought reasoning across round trips.
• Existing (id, content) and (id, content, name) constructors are preserved; ReasoningMessageStartEvent can now carry the role: "reasoning" field.

Breaking changes

• The sealed Message hierarchy gains a new ReasoningMessage variant; exhaustive switches over Message must handle it.

java-client@0.1.1

• Maintenance release; no consumer-facing changes identified.

Breaking changes

None.

java-server@0.1.1

• Maintenance release; no consumer-facing changes identified.

Breaking changes

None.