> For the complete documentation index, see [llms.txt](https://openledger.gitbook.io/openledger/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://openledger.gitbook.io/openledger/developer/api-and-integration.md).

# API & Integration

- [Completions](https://openledger.gitbook.io/openledger/developer/api-and-integration/completions.md)
- [Budget & Spend Tracking](https://openledger.gitbook.io/openledger/developer/api-and-integration/budget-and-spend-tracking.md)
- [Model management](https://openledger.gitbook.io/openledger/developer/api-and-integration/model-management.md)