{"id":101425,"date":"2026-09-06T21:02:15","date_gmt":"2026-09-06T13:02:15","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/101425.html"},"modified":"2026-09-06T21:02:15","modified_gmt":"2026-09-06T13:02:15","slug":"108-agent-langchain%e6%a0%b8%e5%bf%83%e7%bb%84%e4%bb%b6-state%ef%bc%88%e7%8a%b6%e6%80%81%ef%bc%89%e5%92%8c%e9%85%8d%e7%bd%aelangsmith","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/101425.html","title":{"rendered":"108.Agent-LangChain\u6838\u5fc3\u7ec4\u4ef6-State\uff08\u72b6\u6001\uff09\u548c\u914d\u7f6eLangSmith"},"content":{"rendered":"<p>\u6458\u8981&#xff1a;\u672c\u6587\u56f4\u7ed5 LangChain \u4e2d State \u7684\u6838\u5fc3\u6982\u5ff5\u5c55\u5f00&#xff0c;\u4ecb\u7ecd State \u4f5c\u4e3a Agent 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<img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"1219\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260906130209-6a9d64513d8e0.png\" width=\"1535\" \/> <\/p>\n<p>\u767b\u5f55\u4e4b\u540e\u70b9\u51fb\u4e0b\u56fe\u7ea2\u6846<\/p>\n<p> <img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"1219\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260906130209-6a9d6451d39b3.png\" width=\"1535\" \/> <\/p>\n<p>\u7136\u540e\u6dfb\u52a0\u4e00\u4e2aapi key<\/p>\n<p> <img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"1219\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260906130210-6a9d64527d3e5.png\" width=\"1535\" \/> <\/p>\n<p>\u7136\u540e\u5982\u4e0b\u56fe\u7684\u9009\u62e9\u548c\u8f93\u5165&#xff0c;\u7136\u540e\u70b9\u51fbCreate API Key<\/p>\n<p> <img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"526\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260906130210-6a9d6452f2cc4.png\" width=\"794\" \/> <\/p>\n<p>\u7136\u540e\u70b9\u51fbCopy\u590d\u5236API Key&#xff0c;\u6ce8\u610f\u5b83\u53ea\u80fd\u5728\u4e0b\u56fe\u8fd9\u4e00\u6b65\u9aa4\u91cc\u590d\u5236&#xff0c;\u4e0b\u56fe\u7684\u5f39\u6846\u5173\u95ed\u4e86\u5c31\u6ca1\u529e\u6cd5\u590d\u5236\u4e86&#xff0c;\u53ea\u80fd\u91cd\u65b0\u6dfb\u52a0\u4e00\u4e2a<\/p>\n<p> <img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"1219\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260906130211-6a9d645325472.png\" width=\"1535\" \/> <\/p>\n<p>LangChain\u5b98\u65b9\u6587\u6863&#xff1a;Tracing quickstart &#8211; Docs by LangChain<\/p>\n<p>\u5982\u4e0b\u56fe\u7ea2\u6846LangChain\u5b98\u7f51\u4e2d\u5199\u4e86\u8981\u914d\u7f6e\u4e09\u4e2a\u73af\u5883\u53d8\u91cf<\/p>\n<p> <img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"1219\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260906130211-6a9d64539b999.png\" width=\"1535\" \/> <\/p>\n<p>\u4e5f\u4e0d\u9700\u8981\u6839\u636e\u5b98\u7f51\u5199&#xff0c;\u6839\u636e\u4e0b\u56fe\u7ea2\u6846\u91cc\u7684\u5185\u5bb9\u5199\u5c31\u53ef\u4ee5\u4e86&#xff0c;\u5199\u597d\u4e4b\u540e\u76f4\u63a5\u8fd0\u884c\u4e0a\u4e00\u8282\u4e2d\u7684\u4ee3\u7801\u5c31\u53ef\u4ee5\u4e86&#xff0c;\u6ce8\u610f\u5b83\u9700\u8981\u79d1\u5b66\u4e0a\u7f51<\/p>\n<p> <img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"528\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260906130212-6a9d645420ac8.png\" width=\"1251\" \/><br \/>\n # \u5f00\u542fLangSmith\u4e0a\u4f20<br \/>\nLANGSMITH_TRACING&#061;true<br \/>\n# LangSmith\u7684API Key<br \/>\nLANGSMITH_API_KEY &#061; &#034;lsv2_pt_xxxxxxxxx&#034;<br \/>\n# \u4e0a\u4f20\u5730\u5740<br \/>\nLANGSMITH_ENDPOINT&#061;https:\/\/api.smith.langchain.com<br \/>\n# 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src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260906130213-6a9d64555506a.png\" width=\"1535\" \/> <\/p>\n<p>\u7136\u540e\u5c31\u53ef\u4ee5\u770b\u5230\u6267\u884c\u8fc7\u7a0b\u4e86<\/p>\n<p> <img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"1219\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260906130213-6a9d6455caede.png\" width=\"1535\" \/> <\/p>\n<\/p>\n<hr \/>\n<p class=\"img-center\"><img decoding=\"async\" alt=\"img\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260906130214-6a9d64564f94b.png\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6458\u8981&#xff1a;\u672c\u6587\u56f4\u7ed5 LangChain \u4e2d State \u7684\u6838\u5fc3\u6982\u5ff5\u5c55\u5f00&#xff0c;\u4ecb\u7ecd State \u4f5c\u4e3a Agent 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