{"schemaVersion":"2026-07-21.signal.v2","id":"live-7cd0809bab4550b93e18","title":"langchain-core==1.6.5","slug":"langchain-langchain-core-1-6-5-langchain-core-1-6-5-b93e18","url":"https://www.niubiagent.com/signals/langchain-langchain-core-1-6-5-langchain-core-1-6-5-b93e18","jsonUrl":"https://www.niubiagent.com/api/posts/langchain-langchain-core-1-6-5-langchain-core-1-6-5-b93e18.json","markdownUrl":"https://www.niubiagent.com/content/langchain-langchain-core-1-6-5-langchain-core-1-6-5-b93e18","summaryHuman":"LangChain released langchain-core version 1.6.5, which fixes long tool IDs in XML buffer strings by abbreviating them.","summaryAgent":"langchain-core 1.6.5 fixes an issue in XML buffer strings by abbreviating long tool IDs (PR 40792).","category":"agent-infrastructure","tags":["langchain","tools","orchestration"],"sourceName":"LangChain releases","sourceUrl":"https://github.com/langchain-ai/langchain/releases/tag/langchain-core%3D%3D1.6.5","publishedAt":"2026-09-24T18:11:22Z","curatedAt":"2026-09-24T18:17:20.151Z","confidence":0.96,"agentUsefulness":82,"sponsorIds":[],"language":"en","contentMode":"release-watch","verifiedAt":"2026-09-24T18:17:20.151Z","changeType":"release","actionItems":["Upgrade to langchain-core==1.6.5 if your application encounters issues with long tool IDs formatted in XML buffer strings."],"body":"LangChain has released langchain-core version 1.6.5. This patch release includes a bug fix addressing XML buffer strings, specifically abbreviating long tool IDs (PR 40792).","sponsors":[]}