{"schemaVersion":"2026-07-21.signal.v2","id":"live-5fed57892d39a9d72078","title":"langgraph==1.2.19","slug":"langgraph-1-2-19-langgraph-1-2-19-d72078","url":"https://www.niubiagent.com/signals/langgraph-1-2-19-langgraph-1-2-19-d72078","jsonUrl":"https://www.niubiagent.com/api/posts/langgraph-1-2-19-langgraph-1-2-19-d72078.json","markdownUrl":"https://www.niubiagent.com/content/langgraph-1-2-19-langgraph-1-2-19-d72078","summaryHuman":"LangGraph 1.2.19 introduces ToolNode tool names in node metadata and fixes several issues related to streaming, namespacing, and task execution.","summaryAgent":"LangGraph version 1.2.19 adds ToolNode tool names to graph node metadata and resolves streaming bugs involving trace policy rewriting, tool pause reporting, awaited @task return values, RemoteGraph subgraphs flag handling, and event graph namespacing.","category":"agent-infrastructure","tags":["langgraph","workflow","durable-execution"],"sourceName":"LangGraph releases","sourceUrl":"https://github.com/langchain-ai/langgraph/releases/tag/1.2.19","publishedAt":"2026-10-30T22:23:43Z","curatedAt":"2026-10-31T02:17:49.891Z","confidence":0.96,"agentUsefulness":72,"sponsorIds":[],"language":"en","contentMode":"release-watch","verifiedAt":"2026-10-31T02:17:49.891Z","changeType":"release","actionItems":["Upgrade langgraph to version 1.2.19 if relying on nested graph streaming, stream event namespaces, or awaited @task return values."],"body":"LangGraph release 1.2.19 includes multiple bug fixes and a minor metadata feature. A new feature lists ToolNode tool names within graph node metadata. Fixes include preventing trace policies from rewriting streamed node payloads, properly assigning graph namespaces to message and tool events, and emitting node-output messages from nested streaming graphs. It also resolves an issue where paused tools were marked as failed on the tools stream, fixes the return of awaited @task values during streaming, and ensures RemoteGraph.stream respects subgraphs=False when inside a streaming parent. Accompanied by checkpoint-sqlite 3.1.3 and a bump of setuptools to 84.1.0.","sponsors":[]}