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I will build ai chrome extension with claude or gpt integration
Vitalii B
About this gig
I will build a production-ready Chrome extension with Claude or GPT integration, deployed to your account with full ownership.
Modern AI extensions need more than an API call they need Manifest V3 architecture, secure key handling, smooth UX, and clean code.
EVERY PACKAGE INCLUDES
- Manifest V3 extension with React, TypeScript, Tailwind
- Popup UI, content scripts, background worker
- Options page for user settings
- Source code with full documentation
- Tested on Chrome and Edge
- Clean git commits ready to merge
COMMON USE CASES
AI writing assistant for Gmail or LinkedIn, text summarization on any webpage, custom AI helpers for specific platforms, content classification, form auto-fill with AI.
STACK
WXT framework, React 19, TypeScript, Tailwind, Vercel AI SDK, Claude Sonnet, GPT-4o
PREMIUM ADDS BACKEND
Backend proxy on Vercel with protected API keys, three-tier rate limiting, admin panel for usage stats. No API key exposure in extension code.
YOUR INFRASTRUCTURE
You provide your own Anthropic or OpenAI API key. I work as collaborator on Vercel and Chrome Developer accounts never shared passwords.
TO START
Send your idea or paste a spec. Free scope reply within
Get to know Vitalii B
Vitalii B
Web developer
- FromUkraine
- Member sinceApr 2022
- Last delivery2 years
Languages
Ukrainian, English
Senior frontend engineer with 5+ years building production React/Next.js apps. I specialize in turning AI-generated MVPs (Lovable, Bolt, v0, Replit) into production-ready products, building modern web apps from scratch.
Stack: Next.js · React · TypeScript · Supabase · Stripe · Tailwind · shadcn/ui · Claude AI · GPT.
I work as a collaborator through proper team invitations — never shared passwords. You stay full owner of your code and infrastructure. Every project ends with documentation your team can maintain.
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Other Software Development Services I Offer
FAQ
Do you work with both Claude and GPT, or just one?
Both. I integrate Claude Sonnet, GPT-4o, or other models via Vercel AI SDK. You provide the API key for whichever you prefer. Most clients pick Claude for reasoning and long context, GPT for image understanding and function calling. I can structure code so you can switch later.
Will my extension work with the latest Chrome rules?
Yes. All extensions are built on Manifest V3, which is the only version Chrome accepts in 2026. I do not work on legacy Manifest V2 code. If you have an old V2 extension, I offer migration as a separate add-on at $80 - message me before ordering.
Is my Claude or GPT API key safe in the extension?
Basic and Standard packages put the key in extension storage on user devices. Premium adds a backend proxy on your Vercel - your key stays in environment variables, never in extension code. Recommend Premium if you publish on Web Store, since extensions can be unpacked and inspected.
Do you help publish my extension on Chrome Web Store?
Yes, as an add-on at $120 (+5 days). Includes privacy policy, listing copy, promo images, and submission monitoring. Chrome review takes 2-7 days but can be longer in rare cases. I deliver extension code first, then publishing runs separately. Up to 2 rejection iterations free.
Does the extension work in Edge, Firefox, and Safari?
Chrome and Edge work out of the box (both Chromium-based, same Manifest V3 code). Firefox requires manifest adjustments - available as $100 add-on. Safari needs full architectural rewrite (different extension API entirely) and is not supported in this gig.
What will my AI usage costs be after the extension is live?
Depends on traffic. Typical small business: $5-30 per month in Claude or GPT API costs. You will see usage directly in Anthropic or OpenAI Console. Rate limiting in Premium tier prevents runaway costs from abuse. I can help estimate based on expected user volume.
Will I get a video walkthrough of how the extension works?
I deliver detailed written documentation with screenshots instead of video - most clients find it more useful (searchable, easy to share with team). Each delivery includes README with architecture overview, USAGE.md for users, and inline code comments where helpful.
What if I want to add more features after the extension is live?
Two options. One-off: order an extra AI feature ($80) or message me for a custom offer for larger additions. Ongoing: $75 per month retainer covers up to 2 hours of work — perfect for incremental updates, bug fixes, and minor improvements as your needs evolve.
