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I will build a nl2sql langgraph agent with self correction
Moiz Ahmed
About this gig
Are you looking for an AI agent that converts plain English questions into accurate SQL queries and executes them on your database automatically?
I will build a NL2SQL LangGraph agent with self correction so your team can query any PostgreSQL database without writing a single line of SQL.
WHY CHOOSE ME?
I built QueryMind, a production-ready NL2SQL system with 95% benchmark accuracy across 20 real business queries deployed live on Vercel and Render.
WHAT YOU GET:
- Natural language to SQL conversion
- Self correcting agent auto fixes failed queries
- PostgreSQL integration with pgvector schema retrieval
- FastAPI backend with clean REST endpoints
- Query logging and execution trace
- Clean, documented, production ready source code
PERFECT FOR:
- Businesses wanting to query data without SQL knowledge
- Startups building AI powered data tools
- Developers wanting a production NL2SQL system
- Teams needing database analytics without a data analyst
I specialize in LangGraph, Groq LLaMA 3.3, PostgreSQL, FastAPI and Next.js with 3 years of hands on AI and multi agent development experience.
Message me before ordering to discuss your database schema and requirements. I respond within a few hour
Get to know Moiz Ahmed
Moiz Ahmed
AI Engineer, AI Agents, RAG Systems and ML Automations
- FromPakistan
- Member sinceApr 2023
- Avg. response time1 hour
Languages
Urdu, English, Hindi, Spanish
Hi, I'm Moiz Ahmed Mansoori — an AI developer with 3+ years of building AI, ML, and Multi-Agent systems with 8+ real projects under my belt.
I build: AI Agents and chatbots (LangChain, LangGraph), ML models (XGBoost, scikit-learn, SHAP), Data analysis and dashboards (Python, Power BI), Python APIs and apps (FastAPI, Flask, Django)
Clean code. Clear docs. On-time delivery. Let's build something that actually works.
My Portfolio
FAQ
What database do you support?
I primarily work with PostgreSQL. However I can also integrate with MySQL, MongoDB or SQLite depending on your requirements. Message me to discuss your specific database setup before ordering.
How does the self correction work?
If the generated SQL fails or returns an error, the agent automatically detects the issue, sends the error context back to the LLM, and retries with a corrected query — up to 3 times. This gives 95% accuracy on real world business queries.
Do I need to share my database credentials?
You can share a test database or provide sample schema and dummy data. I never require access to your live production database. We will discuss the safest approach before starting.
What will I receive on delivery?
You will receive complete source code, a README with setup instructions, API documentation and a working demo. Premium package includes deployment guide for your preferred platform or I will suggest the best option based on your needs, plus observability dashboard.
Can this work with my existing application?
Yes. The NL2SQL agent exposes clean FastAPI REST endpoints that can integrate with any existing web app, mobile app or internal tool. I can also help with the integration if needed.
