API Tester for ChatGPT

A simple API testing tool that integrates with ChatGPT using OpenAI's Apps SDK. Test APIs directly in your ChatGPT conversations.

Project Structure

API_TESTER/
├── static/
│   ├── api-tester.css      # Widget styles
│   └── api-tester.js       # Widget JavaScript  
├── server.py               # MCP server
├── pyproject.toml          # Dependencies
└── README.md

What it does

Ask ChatGPT to test any API and get instant results with a beautiful interface showing:

• Response status and timing
• Headers and JSON responses
• Error handling for failed requests

Quick Start

1. Run Locally

# Clone and install
git clone https://github.com/Sridevi17j/API_TESTER.git
cd API_TESTER
pip install -e .

# Start server
python server.py

Server runs on http://localhost:8000

2. Get HTTPS URL (Required for ChatGPT)

# Install ngrok: https://ngrok.com/
ngrok http 8000

Use the HTTPS URL from ngrok (like https://abc123.ngrok.app)

3. Connect to ChatGPT

1. Enable Developer Mode:

   • ChatGPT Settings → Apps & Connectors → Advanced Settings
   • Turn on "Developer Mode"

2. Create Connector:

   • Apps & Connectors → "Create new connector"
   • Enter your URL: https://your-ngrok-url.ngrok.app/mcp
   • Save

3. Test It: Ask ChatGPT: "Test the GitHub API for user openai"

Production Deployment

Deploy to any platform that supports Python. Popular options:

Render

1. Go to Render Dashboard
2. Click "New" → "Web Service"
3. Connect your GitHub repo: Sridevi17j/API_TESTER
4. Configure:

   Environment: Python 3
   Build Command: pip install -e .
   Start Command: python server.py
   

Your service will be at: https://your-service-name.onrender.com

Connect to ChatGPT

Use your production URL: https://your-service-name.onrender.com/mcp

1. Enable Developer Mode in ChatGPT Settings
2. Create Connector with your production URL
3. Start testing APIs in ChatGPT

Example Usage

Ask ChatGPT:

• "can you test - https://countriesnow.space/api/v0.1/countries"

ChatGPT will call your API Tester and display results in an interactive widget.