I will add a secure openai or claude chatbot to your nextjs app


About this gig
Turn your existing Next.js or React app into a working AI feature, not just an API demo.
I build or repair one focused feature:
- customer or internal chatbot
- Q&A or search over approved documents
- summarization, classification, or data extraction
- structured output or workflow automation
- streaming responses and conversation state
I can connect OpenAI or Claude through secure server-side routes, protect API keys, validate model output, handle errors and limits, connect your existing auth or database, and test the agreed flow in production.
Why work with me:
- 20+ years shipping production web apps
- 5-star Fiverr delivery covering Claude API, authentication, Stripe, and launch
- personally implemented, reviewed, and tested
- fixed scope and clear async updates
This Gig is for an existing app, not an unlimited build from scratch.
Message me first with your repo or preview, desired user outcome, current problem, data source, and hosting target. I will recommend the smallest reliable package.
Get to know Fumiaki T
AI Web App Rescue Expert for Stripe Supabase and OpenAI
- FromJapan
- Member sinceSep 2022
- Avg. response time15 hours
- Last delivery4 months
Languages
Japanese, English
My Portfolio
FAQ
Which AI providers can you integrate?
Claude and OpenAI are the main focus. I can also discuss Gemini or another API if it fits your existing stack. Please message me before ordering.
Do you need access to my code and API account?
I need the relevant repository or files and a safe way to test the integration. Keep API keys in your environment variables; never paste secrets into a public message.
Are AI API usage fees included?
No. Provider usage fees are paid directly by you to Anthropic, OpenAI, or the selected provider. I will help you add sensible limits and error handling.
Can you build RAG with my documents or database?
Yes. I can implement a focused RAG flow using Supabase pgvector or PostgreSQL, including ingestion, retrieval, citations, and answer generation.
How do revisions work?
Anything that does not match the agreed scope is fixed within the included revisions. New features or changed requirements are quoted separately.
What AI features can you build?
I add chatbots, document Q&A, summarization, classification, extraction, structured output, and scoped workflow automation to existing Next.js or React apps.
Does Basic include document RAG or a full chatbot?
No. Basic covers one simple AI text feature or repair. Persistent chat, document retrieval, multiple sources, and complex workflows require Standard, Premium, or a custom offer.
Is UI design included?
I connect the feature to an existing screen and can make small functional UI changes. A redesign, a large new interface, or a complete app is quoted separately.
Is this a security audit or compliance certification?
No. I implement practical protections such as server-side secrets, validation, error handling, and scoped rate or cost controls. Formal testing or certification is not included.
Do we need a video meeting?
Usually no. Clear written requirements, repository access, a preview, and acceptance criteria are enough. I provide async progress updates through Fiverr.
1 reviews for this Gig
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
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Q qcounsel

United Kingdom
Fumiaki has been fantastic, super responsive. Cooperative and skilled. I really appreciate his work. I will continue working with Fumiaki.
$600-$800
Price
2 weeks
Duration
B 
Seller's Response
Helpful?
1 reviews for this Gig
| (1) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Q qcounsel

United Kingdom
Fumiaki has been fantastic, super responsive. Cooperative and skilled. I really appreciate his work. I will continue working with Fumiaki.
$600-$800
Price
2 weeks
Duration
B 
Seller's Response
Helpful?

