> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://api-docs.papertracc.com/core/purchases/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://api-docs.papertracc.com/_mcp/server.

# Overview

Bookkeeping transaction endpoints for purchases. Bills and expenses are top-level routes.

## Docs

- [Overview](https://api-docs.papertracc.com/core/purchases/bills.md)
- [Overview](https://api-docs.papertracc.com/core/purchases/expenses.md)

## API Docs

- Bills [List Bills](https://api-docs.papertracc.com/core/purchases/bills/list-bills.md)
- Bills [Create Bill](https://api-docs.papertracc.com/core/purchases/bills/create-bill.md)
- Bills [Get Bill](https://api-docs.papertracc.com/core/purchases/bills/get-bill.md)
- Bills [Update Bill](https://api-docs.papertracc.com/core/purchases/bills/update-bill.md)
- Bills [Post Bill](https://api-docs.papertracc.com/core/purchases/bills/post-bill.md)
- Bills [Void Bill](https://api-docs.papertracc.com/core/purchases/bills/void-bill.md)
- Bills [Amend Bill](https://api-docs.papertracc.com/core/purchases/bills/amend-bill.md)
- Bills [Reject Bill](https://api-docs.papertracc.com/core/purchases/bills/reject-bill.md)
- Bills [Approve Bill](https://api-docs.papertracc.com/core/purchases/bills/approve-bill.md)
- Bills [Prepare Bill](https://api-docs.papertracc.com/core/purchases/bills/prepare-bill.md)
- Expenses [List Expenses](https://api-docs.papertracc.com/core/purchases/expenses/list-expenses.md)
- Expenses [Create Expense](https://api-docs.papertracc.com/core/purchases/expenses/create-expense.md)
- Expenses [Get Expense](https://api-docs.papertracc.com/core/purchases/expenses/get-expense.md)
- Expenses [Void Expense](https://api-docs.papertracc.com/core/purchases/expenses/void-expense.md)
- Expenses [Amend Expense](https://api-docs.papertracc.com/core/purchases/expenses/amend-expense.md)

## OpenAPI Specification

The raw OpenAPI 3.1 specification for this API is available at:
- [OpenAPI JSON](https://api-docs.papertracc.com/openapi.json)
- [OpenAPI YAML](https://api-docs.papertracc.com/openapi.yaml)