ChatGPT · MCP setup
Use any MCP server in ChatGPT -
without per-tool plumbing.
ChatGPT can call any MCP server through its custom MCP support. Connect 1Server once and every server in your marketplace is reachable from ChatGPT - same as in Claude or Cursor.
About ChatGPT
ChatGPT is OpenAI's flagship chat product. Custom MCP servers are wired in via the developer settings; once configured, your AI assistant can call any MCP tool from a chat message.
By OpenAI. Visit homepage
60-second install
mcp.json
{
"mcpServers": {
"1server": {
"command": "npx",
"args": [
"-y",
"1server-mcp-engine"
],
"env": {
"ONESERVER_API_KEY": "your-api-key"
}
}
}
}Add to ChatGPT's developer settings under `mcpServers`.
Replace your-api-key / YOUR_KEY with the API key from your dashboard.
Why use 1Server with ChatGPT?
- One connection from ChatGPT to your entire MCP toolbox.
- Same servers, same vault, same config across ChatGPT and your other AI clients.
- Add a server in the 1Server marketplace; it's available in ChatGPT immediately.