heimdall-python-sdk 0.1.3

A cross-framework Python SDK to register a /__ping__ endpoint for Flask, Django, and FastAPI apps.

Heimdall

Keep your backend servers warm and monitored with a single line of code.

heimdall-python-sdk provides a pre-built /__ping__ endpoint to expose memory usage and uptime metadata for free-hosted platforms like Render, Railway, Fly.io, and more. Designed to integrate easily and safely across Django, FastAPI, and Flask frameworks.

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🚀 Features

• 🔁 Keeps servers warm via automated pinging
• 🔒 Prevents endpoint tampering
• 📊 Reports memory usage and system metrics
• 🌐 Framework auto-detection (FastAPI, Flask)
• ⚙️ Manual framework specification (Django)
• 🧩 Simple, plug-and-play integration
• 🐍 Pure Python with zero external dependencies

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📦 Installation

pip install heimdall-python-sdk

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🛠️ Usage

Django

Add the health check endpoint to your Django URL(file: urls.py) configuration:

from django.urls import path
from heimdall_python_sdk import register_ping, heimdall_ping_point

urlpatterns = [
    path(heimdall_ping_point, register_ping(framework="django")),
    # your other URL patterns...
]

FastAPI

Register the health check with your FastAPI application:

from fastapi import FastAPI
from heimdall_python_sdk import register_ping
import uvicorn

app = FastAPI()
register_ping(app)

if __name__ == "__main__":
    uvicorn.run(app, host="localhost", port=8000)

Flask

Register the health check with your Flask application:

from heimdall_python_sdk import register_ping
from flask import Flask

app = Flask(__name__)
register_ping(app)

if __name__ == "__main__":
    app.run(port=5000, debug=True)

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🔒 Security

Heimdall is designed with security in mind:

• Read-only: The endpoint only exposes system metadata, no sensitive data
• No tampering: Users cannot modify the response or inject custom data
• Rate limiting: Built-in protection against abuse
• Framework isolation: Respects your existing middleware and security settings
• Minimal footprint: No external dependencies or security vulnerabilities

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📚 API Reference

register_ping(app=None, framework=None)

Registers a health check endpoint with your web application.

Parameters:

• app (optional): The application instance (required for FastAPI and Flask)
• framework (optional): Framework name for manual specification (required for Django)

Supported Frameworks:

• "django" - Django web framework
• Auto-detected: FastAPI, Flask

Returns:

• For Django: Returns a URL pattern that can be included in urlpatterns
• For FastAPI/Flask: Registers the endpoint directly with the app instance

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🧪 Requirements

• Python 3.7+
• Compatible with Django 3.0+, FastAPI 0.65+, Flask 1.0+
• No external dependencies required

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🤝 Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

1. Fork the repository
2. Create your feature branch (git checkout -b feature/amazing-feature)
3. Commit your changes (git commit -m 'Add some amazing feature')
4. Push to the branch (git push origin feature/amazing-feature)
5. Open a Pull Request

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📄 License

This project is licensed under the MIT License - see the LICENSE file for details.

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🙏 Acknowledgments

• Inspired by the need to keep free-tier servers warm
• Named after Heimdall, the Norse god who guards the Bifrost bridge
• Built with ❤️ for the Python community
• Special thanks to all contributors and maintainers

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Keep your servers vigilant with Heimdall! 🛡️