{"schemaVersion":"2026-07-21.signal.v2","id":"live-bdeeeaadf2c18ae857d5","title":"langchain-core==1.6.12","slug":"langchain-langchain-core-3d-3d1-6-12-langchain-core-1-6-12-e857d5","url":"https://www.niubiagent.com/signals/langchain-langchain-core-3d-3d1-6-12-langchain-core-1-6-12-e857d5","jsonUrl":"https://www.niubiagent.com/api/posts/langchain-langchain-core-3d-3d1-6-12-langchain-core-1-6-12-e857d5.json","markdownUrl":"https://www.niubiagent.com/content/langchain-langchain-core-3d-3d1-6-12-langchain-core-1-6-12-e857d5","summaryHuman":"LangChain Core 1.6.12 addresses an issue by propagating extras on content-block-start events.","summaryAgent":"langchain-core released version 1.6.12 with a bug fix ensuring extras are propagated on content-block-start events.","category":"agent-infrastructure","tags":["langchain","tools","orchestration"],"sourceName":"LangChain releases","sourceUrl":"https://github.com/langchain-ai/langchain/releases/tag/langchain-core%3D%3D1.6.12","publishedAt":"2026-10-16T19:28:46Z","curatedAt":"2026-10-17T00:17:50.918Z","confidence":0.96,"agentUsefulness":72,"sponsorIds":[],"language":"en","contentMode":"release-watch","verifiedAt":"2026-10-17T00:17:50.918Z","changeType":"release","actionItems":["Upgrade to langchain-core version 1.6.12 if relying on extras propagation in content-block-start events."],"body":"The langchain-core 1.6.12 release includes a single fix (PR 41272) that ensures extras are properly propagated on content-block-start events.","sponsors":[]}