I will integrate openai claude or gemini apis into your saas or web app


About this gig
Looking to add AI features to your website, SaaS product, or existing application?
I will integrate OpenAI, ChatGPT, Claude, Gemini, or other AI APIs into your application and turn them into reliable, production-ready features.
My experience includes SaaS platforms, AI automation, document processing, real-time applications, and complex API integrations, so I can work with both new and existing production applications.
Whether you need an AI chatbot, document processing, content generation, summarization, structured data extraction, or a custom AI workflow, I can integrate it directly into your existing system.
AI features I can build:
- AI chatbots and assistants
- OpenAI / ChatGPT API integration
- Claude API integration
- Gemini API integration
- PDF and document data extraction
- AI summarization and text generation
- Structured JSON responses
- AI email processing
- Custom prompts and workflows
- Database-connected AI features
- Backend API integration
- Error handling and testing
I work with Node.js, NestJS, TypeScript, JavaScript, React, Next.js, MongoDB, PostgreSQL, MySQL, AWS and REST APIs.
You will receive clean, maintainable source code with secure API handling and an integration designed
Get to know Usama Mushtaq
Full Stack Developer NestJS React Nodejs Expert
- FromPakistan
- Member sinceAug 2026
- Avg. response time1 hour
Languages
Urdu, English
My Portfolio
FAQ
Which AI APIs can you integrate?
I can integrate GPT, Claude, Gemini, and other AI APIs into websites, SaaS platforms, dashboards, and existing applications. I can also help select the right AI model based on your use case.
Can you integrate AI into my existing application?
Yes. I can integrate AI features into your existing frontend or backend without rebuilding the entire application. I work with technologies such as Node.js, NestJS, TypeScript, JavaScript, React, Next.js, MongoDB, PostgreSQL, and REST APIs.
What information do you need before starting the project?
I will need a brief description of your AI feature, your current technology stack, access to the relevant codebase or API documentation, and details about the expected workflow. Please contact me before ordering if you are unsure about the scope.
Can you build custom AI workflows instead of just connecting an API?
Yes. I can build custom AI workflows such as chatbots, document and PDF data extraction, summarization, structured data generation, email processing, database-connected AI features, and other business-specific automation.
Are the AI API usage costs included in the Gig price?
No. API usage fees charged by providers such as OpenAI, Anthropic, or Google are separate and are usually paid directly by the buyer through their own API account.
Can you integrate AI into an existing Node.js, React, Next.js, or NestJS application?
Yes. I can integrate AI features into existing frontend, backend, or full-stack applications without requiring you to rebuild the entire product.

