ChatGPT
Add IndexZero to ChatGPT as a connector so it can call the tools in a conversation.
ChatGPT connects to remote MCP servers through connectors. Custom connectors are available on plans that allow them and may need developer mode enabled in settings; the steps below assume it is.
Open connector settings
In ChatGPT, open Settings, then Connectors. Choose Create (or Add custom connector).
Enter the endpoint
https://app.indexzero.site/mcpName it "IndexZero". Choose OAuth as the authentication method; no client id or secret is required, because the server registers clients dynamically.
Approve
ChatGPT opens app.indexzero.site. Sign in if needed and approve the connection.
Use it in a chat
Enable the IndexZero connector for a conversation from the tools menu and ask it to list your projects.
If your ChatGPT plan cannot add custom connectors
Use the tool catalog with function calling instead. https://app.indexzero.site/api/mcp/catalog returns every tool in the shape function-calling APIs expect, and requests to the endpoint can be authenticated with an API key. See Any other client.