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AI Features & Chatbots

AI that holds up with real users, at a cost you can predict.

A feature that writes, summarises or generates inside your app, or a chatbot that answers from your own documents and shows its sources.

From $99Cost estimate firstAnswers with sources

Why this service exists

Adding an API call to OpenAI takes an afternoon. Making it reliable takes more: answers that come from your documents instead of made-up facts, limits so one user cannot run up your bill, and a clear idea of what it will cost each month before you launch.

My process, step by step

01

The job and real examples

You show me the app and the job the AI should do, with 3 to 5 real examples of input and the output you want.

02

Tests on your data and a cost estimate

I test prompts on your real examples and send the results with an estimated cost per 1,000 uses, before I build anything.

03

Build with limits

I build it into your app with usage limits and error handling, on a preview link. For chatbots: ingestion, embeddings in Supabase pgvector and a chat UI with sources.

04

Handover

You learn how to change the prompt and watch usage and costs. Your API key stays in your hosting environment variables, never in the code.

Every engagement includes

OpenAI, Gemini or Claude in your app
Document chatbots with sources (RAG)
Usage limits, credits and Stripe metering
Cost estimate from your own data first

Common questions

Specific answers for this service engagement.

Yes. I build chatbots on the OpenAI API (or Gemini or Claude on request) that answer from your own documents, using embeddings in Supabase pgvector. Answers show their sources, and when nothing matches, the bot says so instead of guessing.

Book a free call to fix your app or plan your MVP

Mohammad Shuja Uddin offers free 30-minute calls to scope app fixes, SaaS MVPs and AI features. He replies within 24 hours.

Send me your app link and what is broken.

You get back what is wrong, what I would fix first and a fixed price, within 24 hours. No call needed.

How can I hire Shuja Uddin to fix my app or build an MVP?

Book a free 30-minute call on shuja.app, or hire him on Upwork or Fiverr. Send the app link, the repo and what goes wrong, and you will get a plan with a fixed price before any work starts. He works on Next.js, React and Supabase apps, including apps built with Lovable, Bolt, Cursor and Replit.