Devntra
QueryBot
Ask your database anything in plain English. QueryBot generates the SQL, runs it, and hands you a chart — instantly.
Databases for Everyone
Data analysts waste hours writing boilerplate SQL, and business users are completely locked out of their own databases. QueryBot was engineered to erase that gap entirely — a LangGraph-orchestrated agent pipeline translates natural language into optimized SQL, executes queries securely, and delivers rich AI-generated narratives and automated chart visualizations back to the user in seconds.
Natural Language → SQL
A LangGraph agent with conditional routing interprets intent, generates optimized SQL, validates it, and executes it — all autonomously.
Auto Visualizations
Query results are automatically analyzed and rendered as contextual charts and graphs — no configuration required from the user.
4-Service Microarchitecture
Devntra designed a clean separation of concerns across four independently scalable services — React UI, Flask Auth proxy, Node.js SQLite engine, and the LangGraph AI agent — all containerized with Docker for production-ready deployment.
LangGraph Agent Pipeline
A stateful LangGraph workflow with conditional routing handles intent classification, SQL generation, query validation, execution, visualization, and insight generation — all in one orchestrated pass.
Real-Time SSE Streaming
Server-Sent Events stream live query execution progress directly to the React frontend, giving users instant, step-by-step feedback as the agent works.
Multi-Format Ingestion
Upload SQLite databases directly or drop in CSV files — the Node.js service auto-converts them and makes them immediately queryable.
Business users extract database insights in plain English — zero SQL syntax knowledge needed.
Frontend, Auth Server, SQLite Server, and LangGraph Agent — each independently scalable.
Live query execution updates streamed to the UI via Server-Sent Events for instant feedback.
“QueryBot completely changed how our non-technical team interacts with data. They just type a question, and a chart appears. The LangGraph orchestration under the hood is genuinely impressive engineering.”
Ready to build your AI data product?
Let's discuss how our agent-first engineering can turn your raw data into intelligent, self-service insights.