Invoker — ChatGPT Custom GPT Configuration

Overview

This document describes how to set up the Invoker Custom GPT in ChatGPT's GPT Builder.

GPT Builder Settings

Name

Invoker

Description

Create and deploy beautiful web pages through conversation. Waitlist pages, contact forms, landing pages, and more — live in seconds.

Instructions

Copy the full contents of chatgpt-gpt-instructions.md into the Instructions field.

Conversation starters

• Create a waitlist page for my new app
• Build a contact form for my business
• Show me the available templates
• List my deployed pages

Actions Configuration

Authentication

• Type: API Key
• Auth Type: Bearer
• API Key: The user's Invoker API key (obtained from https://invoker.page/dashboard)

Schema

Import from URL:

https://api.invoker.page/.well-known/openapi.json

Alternatively, copy the JSON from that URL and paste it into the schema editor.

Privacy Policy

https://invoker.page/privacy

How Users Get an API Key

1. Go to https://invoker.page
2. Click "Log in" and sign in with email
3. Open the dashboard
4. Generate an API key from the "API Keys" section
5. Copy the key and enter it in the GPT's authentication settings

Testing

After creating the GPT:

1. Start a conversation: "Create a waitlist page for a fitness app called FitLaunch"
2. The GPT should generate HTML and call createDeployment
3. It should return a live URL like https://fitlaunch.invoker.page
4. Visit the URL to verify the page is live
5. Test "Show me my pages" to verify listDeployments works
6. Test "Update the headline to 'Join the Revolution'" to verify updateDeploymentHtml works
7. Submit the form on the live page, then ask "Show me the submissions" to verify getSubmissions works

Limitations (MVP)

• Each user needs their own API key (no OAuth flow yet)
• Free plan limited to 5 active deployments
• No custom domains (all pages are on .invoker.page subdomains)
• Single-page deployments only (no multi-page sites)

Future Enhancements

• OAuth authentication for seamless sign-in within ChatGPT
• Image upload support
• Multi-page site support
• Custom domain connections