Faisal Khan

AI Integration for Existing Apps

  • Bolt on a scoped AI feature, keep your existing frontend and backend
  • Wire into whatever stack is already running, not a rewrite first
  • Ship one feature at a time instead of a full AI-native rearchitecture
What this service actually covers

A specific AI feature — a support chatbot, semantic search over existing content, or one automated step — added into a live app, working with whatever's already there rather than requiring a rewrite first.

Tech stack

Whatever the existing app already runs on — the AI layer (OpenAI/Claude API, LangChain, a vector database for search or RAG) gets wired in via API calls and a scoped integration point, not a framework swap.

What's included

Scoping the one feature that actually matters, integration into the existing frontend/backend, and testing against the app's real data — not a broader audit of the whole codebase unless that's specifically wanted.

Where this fits vs. Full Stack AI Development

This is for one feature added into an app that otherwise stays as-is. Full Stack AI Development is for building a product where AI is core to the architecture from the start, or a deeper AI-native rework — see that page if the ask is bigger than a single bolted-on feature.

Who this is for

Teams with a working app who want AI in a specific place — support, search, or one repetitive task — without touching everything else that already works.

The real difference

This page covers adding one AI feature into an app that stays otherwise unchanged. Full Stack AI Development (above) is for products where AI is core to the architecture, new or substantially reworked — different scope, different starting point.

FAQ

Common questions

Do you need to see my whole codebase, or just the part the AI feature touches?

Usually just the relevant part — a full codebase review only happens if the integration point genuinely requires understanding more of the app.

Will this require changing my existing frontend framework or backend language?

No — the AI feature gets wired into whatever's already running. A stack change isn't part of this service; see Legacy Stack Migration if that's actually needed separately.

What kind of AI features can actually be added this way?

Chatbots, semantic/RAG-based search over existing content, and single automated steps (classify, extract, summarize, respond) are the common ones.

How is this different from just building a new AI feature as part of a bigger project?

Scope — this is one feature added into an app that otherwise stays as-is, not a broader AI-native rebuild. See Full Stack AI Development if the ask is bigger than that.

What if the existing app's data isn't in a format an AI can use yet?

That's part of the scoping conversation up front — getting the data into a usable shape (chunking, indexing, cleanup) is normal work within this service, not a blocker.

Pricing

Best plan offer

Basic

$200+/ project

Delivery: 2-3 days

  • Full-stack website, up to 5 pages
  • React/Next.js + Node.js + SQL/MongoDB
  • Database integration + API development
  • Fully responsive design
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Best value

Standard

$350+/ project

Delivery: 5-10 days

  • Full-stack website, 5-7 pages
  • React/Next.js + Node.js + SQL/MongoDB
  • Authentication system (JWT/Auth.js)
  • AI features integrated (chat, search, or content)
  • Custom UI components
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Premium

$1000+/ project

Delivery: 15-30 days

  • AI automation / agentic system, built to spec
  • Custom agent workflows (LLM-driven, tool-using)
  • Integrations with your existing tools/APIs
  • Task/process automation to replace manual work
  • Admin dashboard + monitoring
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Interested in working with me?

Let's connect and talk about your project.

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