Connect ChatGPT

Add Voxmin to ChatGPT as a custom MCP server and sign in with your Voxmin account, so ChatGPT can make pictures, songs and karaoke with your Voxmin credits.

ChatGPT

ChatGPT connects to MCP servers in Developer mode, signing in with OAuth. It cannot send a personal token, so you sign in with your Voxmin account.

Before you start

A Voxmin account with some credits.
ChatGPT on the web, on a plan with Developer mode (Plus, Pro, Business, Enterprise or Edu). On Business and Enterprise, an admin may need to allow custom MCP connectors first.

Add Voxmin

Turn on Developer mode

In ChatGPT on the web, open Settings and turn on Developer mode. Depending on your version, it is under Apps & Connectors → Advanced settings, or under Security.

Add a custom MCP server

Add a custom MCP server (it may be called a connector, an app or a plugin). Name it Voxmin, paste the MCP server URL, and choose OAuth for authentication:

https://api.voxmin.com/auth/mcp

Create it, then connect. ChatGPT opens Voxmin: log in if you are asked, check that the page names ChatGPT, and choose Approve.

Check it works

In a new chat, add Voxmin from the tools (the + menu).
Ask: "What's my Voxmin balance?" ChatGPT calls get_account and answers with your credits.
ChatGPT asks before it uses a tool that changes something. Read the price in the request before you allow a spending tool.

Voxmin shows ChatGPT under AI Integrations → Connected apps. Sign out there stops it at once.

Troubleshooting

What you see	Why	What to do
No way to add an MCP server	Developer mode is off, or not on your plan or workspace	Turn it on in Settings, or ask your workspace admin
The Voxmin page says the sign-in has ended	It waited more than 10 minutes, or was already answered	Connect again from ChatGPT
Voxmin stopped working	It was signed out on Voxmin, or not used for 90 days	Reconnect it in ChatGPT
"Not enough credits"	Your balance is lower than the tool's price	Top up on the Pricing page
`429 Too Many Requests`	More than 60 requests in a minute	Wait a minute and try again
The request is refused	It did not pass Voxmin's content checks	Change the request. A refused picture is not charged

To call Voxmin from your own code with OpenAI's API, see the OpenAI Responses API guide instead. See the overview for every tool, its price and how billing works.

OpenAI Responses API

Use the Voxmin MCP server as a remote MCP tool in the OpenAI Responses API, so your own app can make pictures, songs and karaoke with your Voxmin credits.

What developers say about us

From developers integrating the Voxmin API into their applications.

“The REST API is well-documented. We built a batch processor that handles 500+ tracks overnight for our venue clients.”

Marcus K.

Backend engineer, SingAlong Pro

“Integrated the API into our karaoke app — job polling is straightforward and the webhook support saved us from building our own queue system.”

Alex R.

Lead developer, KaraokeFlow

“Switched from manual stem separation to Voxmin API. Our developers love the predictable credit pricing and consistent output quality.”

Sarah L.

CTO, LyricVideo.io

“Error handling is excellent — detailed error messages helped us debug payload issues quickly during integration.”

Tom W.

Senior developer, VocalRemover API