LangSpend Python SDK License

Copyright (c) 2025 LangSpend, Inc. All rights reserved.

IMPORTANT: This software is part of the LangSpend commercial service. 
An API key is required to use this SDK in production.

## License Terms

### For Open Source and Evaluation Use
This SDK is licensed under the MIT License for:
- Open source projects
- Personal projects
- Evaluation and testing purposes
- Development and learning

### For Commercial Use
For commercial use in production applications, you must:
1. Obtain a valid LangSpend API key
2. Comply with LangSpend's Terms of Service
3. Use the SDK only with LangSpend's commercial service

## MIT License (for permitted uses)

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

## LangSpend Service

LangSpend is a commercial SaaS product that provides LLM cost tracking and 
customer attribution. This SDK is designed to work exclusively with the 
LangSpend service.

### Getting Started
1. Sign up at https://langspend.com
2. Get your API key from the dashboard
3. Use this SDK to track your LLM costs

### Free Tier
LangSpend offers a free tier for developers to get started. 
See https://langspend.com/pricing for details.

### Support
- Documentation: https://docs.langspend.com
- Support: support@langspend.com
- GitHub Issues: https://github.com/LangSpend/langspend-python-sdk/issues

## Restrictions

You may not:
1. Use this SDK to create competing services
2. Reverse engineer the LangSpend API
3. Use this SDK without a valid API key in production
4. Redistribute this SDK under different terms

## Trademark Notice

"LangSpend" is a trademark of LangSpend, Inc. You may not use this trademark
without written permission.
