--- title: Build a Complete OpenSource LLM RAG QA Chatbot — Flask... description: This post discusses how to build a robust Flask API Backend for a chatbot, including setting up the Flask architecture, handling environment variables,... canonical: https://daily.dev/posts/build-a-complete-opensource-llm-rag-qa-chatbot-flask-server-aynxkmlkg twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Build a Complete OpenSource LLM RAG QA Chatbot — Flask Server | daily.dev og:description: This post discusses how to build a robust Flask API Backend for a chatbot, including setting up the Flask architecture, handling environment variables,... og:url: https://daily.dev/posts/build-a-complete-opensource-llm-rag-qa-chatbot-flask-server-aynxkmlkg og:image: https://api.daily.dev/og/posts/aYnXKmlkg.png og:image:alt: Build a Complete OpenSource LLM RAG QA Chatbot — Flask Server og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Build a Complete OpenSource LLM RAG QA Chatbot — Flask Server **[Python in Plain English](https://daily.dev/sources/inPlainEngHQ)** · 9 min read · 2 upvotes · 0 comments ## Summary This post discusses how to build a robust Flask API Backend for a chatbot, including setting up the Flask architecture, handling environment variables, implementing rate limiting, and using Pinecone VectorStorage and MongoDB for document retrieval and index status verification. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#python](https://daily.dev/tags/python), [#backend](https://daily.dev/tags/backend), [#flask](https://daily.dev/tags/flask), [#raspberry-pi](https://daily.dev/tags/raspberry-pi) [View this post on daily.dev](https://daily.dev/posts/build-a-complete-opensource-llm-rag-qa-chatbot-flask-server-aynxkmlkg) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Build a Complete OpenSource LLM RAG QA Chatbot — Flask Server","url":"https://daily.dev/posts/build-a-complete-opensource-llm-rag-qa-chatbot-flask-server-aynxkmlkg","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/build-a-complete-opensource-llm-rag-qa-chatbot-flask-server-aynxkmlkg"},"datePublished":"2024-03-29T01:14:02.896Z","dateModified":"2024-05-09T08:22:04.995Z","description":"This post discusses how to build a robust Flask API Backend for a chatbot, including setting up the Flask architecture, handling environment variables,...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/72b905dedbd7f6e52ef16f0995f0d1e9?_a=AQAEufR","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/72b905dedbd7f6e52ef16f0995f0d1e9?_a=AQAEufR","isAccessibleForFree":true,"articleSection":"Python in Plain English","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Python in Plain English","logo":"https://media.daily.dev/image/upload/s--Dg5QTRuI--/f_auto,q_auto/v1686665538/logos/pe","url":"https://daily.dev/sources/inPlainEngHQ"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/build-a-complete-opensource-llm-rag-qa-chatbot-flask-server-aynxkmlkg","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":2},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"python,backend,flask,raspberry-pi","timeRequired":"PT9M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Python in Plain English","item":"https://daily.dev/sources/inPlainEngHQ"},{"@type":"ListItem","position":3,"name":"Build a Complete OpenSource LLM RAG QA Chatbot — Flask Server"}]} ```