I will build a custom chatgpt plugin for your app or API
About this gig
OpenAI just opened ChatGPT to plugins that run inside the chat, with their own sidebar, panels, and automations. More than a billion people use ChatGPT every week. If your product isn't there, your competitors' products will be.
I build custom ChatGPT plugins that connect ChatGPT to your software, data, or API.
What you get:
- An MCP server that gives ChatGPT secure tools for your product, such as search, create, update, and book
- Optional interactive screens that open in ChatGPT's sidebar or beside the chat
- Optional live automations, so ChatGPT reacts when something happens in your app, like a new lead or order
- Secure login for your users with OAuth
- Testing inside ChatGPT and help preparing your plugin for directory submission
I'm a US-based full-stack developer working in Node.js, TypeScript, React, and Supabase.
Please message me before ordering with a short description of your product and what you want ChatGPT to do. I'll confirm the scope and recommend the right package.
Get to know Brad L.
Full Stack Developer for Web Apps, SaaS, and AI Integrations
- FromUnited States
- Member sinceFeb 2020
- Last delivery6 years
Languages
English
My Portfolio
FAQ
What do I need to provide?
Access to your API or database, a short list of what you want ChatGPT to do, and test account credentials if your product requires login.
Will this work in Claude too?
Yes, in most cases. The plugin is built on MCP, the open standard used by both ChatGPT and Claude.
Who owns the code?
You do. I deliver the full source code and deployment instructions.
Is hosting included?
I deploy to your hosting account. If you don't have one, I'll recommend an affordable option and set it up with you.

