HTTP Request node
+6

Talk to your SQLite database with a LangChain AI Agent πŸ§ πŸ’¬

Published 5 months ago

Created by

yulia
Yulia

Categories

Template description

This n8n workflow demonstrates how to create an agent using LangChain and SQLite. The agent can understand natural language queries and interact with a SQLite database to provide accurate answers. πŸ’ͺ

πŸš€ Setup

Run the top part of the workflow once.
It downloads the example SQLite database, extracts from a ZIP file and saves locally (chinook.db).

πŸ—£οΈ Chatting with Your Data

  1. Send a message in a chat window.
  2. Locally saved SQLite database loads automatically.
  3. User's chat input is combined with the binary data.
  4. The LangChain Agend node gets both data and begins to work.

The AI Agent will process the user's message, perform necessary SQL queries, and generate a response based on the database information. πŸ—„οΈ

🌟 Example Queries

Try these sample queries to see the AI Agent in action:

  1. "Please describe the database" - Get a high-level overview of the database structure, only one or two queries are needed.
  2. "What are the revenues by genre?" - Retrieve revenue information grouped by genre, LangChain agent iterates several time before producing the answer.

The AI Agent will store the final answer in its memory, allowing for context-aware conversations. πŸ’¬

Read the full article: πŸ‘‰ https://blog.n8n.io/ai-agents/

Share Template

More AI workflow templates

OpenAI Chat Model node
SerpApi (Google Search) node

AI agent chat

This workflow employs OpenAI's language models and SerpAPI to create a responsive, intelligent conversational agent. It comes equipped with manual chat triggers and memory buffer capabilities to ensure seamless interactions. To use this template, you need to be on n8n version 1.50.0 or later.
n8n-team
n8n Team
HTTP Request node
Merge node
+7

Scrape and summarize webpages with AI

This workflow integrates both web scraping and NLP functionalities. It uses HTML parsing to extract links, HTTP requests to fetch essay content, and AI-based summarization using GPT-4o. It's an excellent example of an end-to-end automated task that is not only efficient but also provides real value by summarizing valuable content. Note that to use this template, you need to be on n8n version 1.50.0 or later.
n8n-team
n8n Team
HTTP Request node
Markdown node
+5

AI agent that can scrape webpages

βš™οΈπŸ› οΈπŸš€πŸ€–πŸ¦Ύ This template is a PoC of a ReAct AI Agent capable of fetching random pages (not only Wikipedia or Google search results). On the top part there's a manual chat node connected to a LangChain ReAct Agent. The agent has access to a workflow tool for getting page content. The page content extraction starts with converting query parameters into a JSON object. There are 3 pre-defined parameters: url** – an address of the page to fetch method** = full / simplified maxlimit** - maximum length for the final page. For longer pages an error message is returned back to the agent Page content fetching is a multistep process: An HTTP Request mode tries to get the page content. If the page content was successfuly retrieved, a series of post-processing begin: Extract HTML BODY; content Remove all unnecessary tags to recude the page size Further eliminate external URLs and IMG scr values (based on the method query parameter) Remaining HTML is converted to Markdown, thus recuding the page lengh even more while preserving the basic page structure The remaining content is sent back to an Agent if it's not too long (maxlimit = 70000 by default, see CONFIG node). NB: You can isolate the HTTP Request part into a separate workflow. Check the Workflow Tool description, it guides the agent to provide a query string with several parameters instead of a JSON object. Please reach out to Eduard is you need further assistance with you n8n workflows and automations! Note that to use this template, you need to be on n8n version 1.19.4 or later.
eduard
Eduard

Implement complex processes faster with n8n

red icon yellow icon red icon yellow icon