{"slug":"what-is-langchain","verification":{"valid":true,"entries":8,"head":"e4442940db9d23e230b38b0f7c49163b75d703732af831eba547983bc0f9b856"},"energy":{"passes":8,"tokens_in":0,"tokens_out":0,"tokens_total":0,"cost_usd":0,"models":{"cap:cap_e977bc9c49319139":1,"claude-fable-5":7},"head":"e4442940db9d23e230b38b0f7c49163b75d703732af831eba547983bc0f9b856"},"provenance":[{"ts":"2026-07-24T16:10:33.242Z","model":"cap:cap_e977bc9c49319139","action":"voxel_batch_document_new","prompt":"","input":"what-is-langchain","response":"17 DIVs from document (verbatim, roundtrip-checked)","tokens_in":0,"tokens_out":0,"cost":0,"prev":"genesis","hash":"f3ae56b433dbe3309e3cf5fc0708332832b26de542416522ba8555e194543df2"},{"ts":"2026-07-24T16:11:35.900Z","model":"claude-fable-5","action":"sources","prompt":"","input":"what-is-langchain","response":"1 source(s) added","tokens_in":0,"tokens_out":0,"cost":0,"prev":"f3ae56b433dbe3309e3cf5fc0708332832b26de542416522ba8555e194543df2","hash":"5ddb52f7ec48925ee2ad38d05c3669d480f4f543b34107b53000956d39748bad"},{"ts":"2026-07-24T16:11:36.568Z","model":"claude-fable-5","action":"sources","prompt":"","input":"what-is-langchain","response":"1 source(s) added","tokens_in":0,"tokens_out":0,"cost":0,"prev":"5ddb52f7ec48925ee2ad38d05c3669d480f4f543b34107b53000956d39748bad","hash":"0720d052897baa21f29977fcf0b06090e6ab64311cdf8344eced2ffb9046fa7b"},{"ts":"2026-07-24T16:11:37.637Z","model":"claude-fable-5","action":"sources","prompt":"","input":"what-is-langchain","response":"1 source(s) added","tokens_in":0,"tokens_out":0,"cost":0,"prev":"0720d052897baa21f29977fcf0b06090e6ab64311cdf8344eced2ffb9046fa7b","hash":"91562ef72bf4bbf266ffc74dea5d8a9f7ab70dca8cda8347cc5897b42eeb3175"},{"ts":"2026-07-24T16:11:38.951Z","model":"claude-fable-5","action":"claim","prompt":"","input":"what-is-langchain c1","response":"LangChain is an MIT-licensed framework (142.5k GitHub stars) for building agents and LLM-powered applications; it is a library you import and host, not a service.","tokens_in":0,"tokens_out":0,"cost":0,"prev":"91562ef72bf4bbf266ffc74dea5d8a9f7ab70dca8cda8347cc5897b42eeb3175","hash":"a358d297d54a5d9d63614fa46102f98353230265b7f57ce722f41f898f85059c"},{"ts":"2026-07-24T16:11:39.346Z","model":"claude-fable-5","action":"claim","prompt":"","input":"what-is-langchain c2","response":"LangChain's core abstraction is create_agent, a configurable agent harness; the docs' formula is Agent = Model + Harness.","tokens_in":0,"tokens_out":0,"cost":0,"prev":"a358d297d54a5d9d63614fa46102f98353230265b7f57ce722f41f898f85059c","hash":"51e969d67440b83f0ec41d0051f9242dfbddf97bc90fe5a2b9aa6bdca7d21d14"},{"ts":"2026-07-24T16:11:39.786Z","model":"claude-fable-5","action":"claim","prompt":"","input":"what-is-langchain c3","response":"Since the 1.0 reorganization LangChain agents are built on top of LangGraph (38.1k stars), which supplies durable execution, human-in-the-loop, and memory; Klarna, Replit and Elastic are named users.","tokens_in":0,"tokens_out":0,"cost":0,"prev":"51e969d67440b83f0ec41d0051f9242dfbddf97bc90fe5a2b9aa6bdca7d21d14","hash":"5325f2b7d3c1c0d2962413cb3d8a196e925da741e2609f2cc1c9624597ab6af0"},{"ts":"2026-07-24T16:11:40.212Z","model":"claude-fable-5","action":"claim","prompt":"","input":"what-is-langchain c4","response":"LangChain is not a hosted service, not a runtime tool registry, not an inter-agent protocol, and holds no authorization model — the four gaps that define the framework category boundary. Analytical reading of the documented scope.","tokens_in":0,"tokens_out":0,"cost":0,"prev":"5325f2b7d3c1c0d2962413cb3d8a196e925da741e2609f2cc1c9624597ab6af0","hash":"e4442940db9d23e230b38b0f7c49163b75d703732af831eba547983bc0f9b856"}]}