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

# API Reference


## API Docs

- Accounts Payable Payments API [List AP Payments](https://rockwell.ferndocs.com/api-reference/accounts-payable-payments-api/list-ap-payments.md)
- Accounts Payable Payments API [DEMO ENDPOINT](https://rockwell.ferndocs.com/api-reference/accounts-payable-payments-api/demo-endpoint.md)
- Accounts Receivable Deposits API [Get AR Deposit](https://rockwell.ferndocs.com/api-reference/accounts-receivable-deposits-api/get-ar-deposit.md)
- Accounts Receivable Deposits API [List AR Deposits](https://rockwell.ferndocs.com/api-reference/accounts-receivable-deposits-api/list-ar-deposits.md)
- Accounts Receivable Invoices API [List AR Invoices](https://rockwell.ferndocs.com/api-reference/accounts-receivable-invoices-api/list-ar-invoices.md)
- Accounts Receivable Invoices API [Create AR Invoice](https://rockwell.ferndocs.com/api-reference/accounts-receivable-invoices-api/create-ar-invoice.md)
- Accounts Receivable Invoices API [Get AR Invoice](https://rockwell.ferndocs.com/api-reference/accounts-receivable-invoices-api/get-ar-invoice.md)
- Accounts Receivable Invoices API [Update AR Invoice](https://rockwell.ferndocs.com/api-reference/accounts-receivable-invoices-api/update-ar-invoice.md)
- Contacts API [List Contacts](https://rockwell.ferndocs.com/api-reference/contacts-api/list-contacts.md)
- Contacts API [Create Contact](https://rockwell.ferndocs.com/api-reference/contacts-api/create-contact.md)
- Contacts API [Get Contact](https://rockwell.ferndocs.com/api-reference/contacts-api/get-contact.md)
- Contacts API [Update Contact](https://rockwell.ferndocs.com/api-reference/contacts-api/update-contact.md)
- Contacts API [Delete Contact](https://rockwell.ferndocs.com/api-reference/contacts-api/delete-contact.md)
- Contacts API [Search Contacts](https://rockwell.ferndocs.com/api-reference/contacts-api/search-contacts.md)
- Customers API [List Customers](https://rockwell.ferndocs.com/api-reference/customers-api/list-customers.md)
- Customers API [Create Customer](https://rockwell.ferndocs.com/api-reference/customers-api/create-customer.md)
- Customers API [Create Customer Address](https://rockwell.ferndocs.com/api-reference/customers-api/create-customer-address.md)
- Customers API [Deactivate Customer](https://rockwell.ferndocs.com/api-reference/customers-api/deactivate-customer.md)
- Customers API [Get Customer](https://rockwell.ferndocs.com/api-reference/customers-api/get-customer.md)
- Customers API [Update Customer](https://rockwell.ferndocs.com/api-reference/customers-api/update-customer.md)
- Purchase Orders API [List Purchase Orders](https://rockwell.ferndocs.com/api-reference/purchase-orders-api/list-purchase-orders.md)
- Purchase Orders API [Create Purchase Order](https://rockwell.ferndocs.com/api-reference/purchase-orders-api/create-purchase-order.md)
- Purchase Orders API [Get Purchase Order](https://rockwell.ferndocs.com/api-reference/purchase-orders-api/get-purchase-order.md)
- Purchase Orders API [Update Purchase Order](https://rockwell.ferndocs.com/api-reference/purchase-orders-api/update-purchase-order.md)
- Purchase Orders API [Cancel Purchase Order](https://rockwell.ferndocs.com/api-reference/purchase-orders-api/cancel-purchase-order.md)
- Purchase Orders API [Get PO Line Items](https://rockwell.ferndocs.com/api-reference/purchase-orders-api/get-po-line-items.md)
- Sales Orders API [List Sales Orders](https://rockwell.ferndocs.com/api-reference/sales-orders-api/list-sales-orders.md)
- Sales Orders API [Create Customer Purchase Order](https://rockwell.ferndocs.com/api-reference/sales-orders-api/create-customer-purchase-order.md)
- Sales Orders API [Get Sales Order](https://rockwell.ferndocs.com/api-reference/sales-orders-api/get-sales-order.md)
- Sales Orders API [Update Customer Purchase Order](https://rockwell.ferndocs.com/api-reference/sales-orders-api/update-customer-purchase-order.md)

## OpenAPI Specification

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


> **Note:** This page contains both a page directory (above) and the landing page content (below). The page directory is generated for agent use and does not appear on the landing page.

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

# API Reference

The Plex API reference provides interactive documentation for all available REST APIs. Each endpoint includes request and response schemas, parameter details, and code examples you can use to integrate directly with the Plex platform.

## Available APIs

| API                                                                                 | Description                                                                                                 |
| ----------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------- |
| [**Accounts Payable Payments**](/api-reference/accounts-payable-payments-api)       | Retrieve AP payment records for reconciliation, reporting, and audit purposes                               |
| [**Accounts Receivable Deposits**](/api-reference/accounts-receivable-deposits-api) | Access AR deposit and deposit line data for tracking customer payments                                      |
| [**Accounts Receivable Invoices**](/api-reference/accounts-receivable-invoices-api) | Manage AR invoices including creation, retrieval, and line-item details                                     |
| [**Contacts**](/api-reference/contacts-api)                                         | Create, update, search, and delete contact records associated with customers, suppliers, and other entities |
| [**Customers**](/api-reference/customers-api)                                       | Manage customer master data including addresses, financial details, and lifecycle status                    |
| [**Purchase Orders**](/api-reference/purchase-orders-api)                           | Create and manage purchase orders, line items, and supplier purchasing workflows                            |
| [**Sales Orders**](/api-reference/sales-orders-api)                                 | Create and manage sales orders, line items, and customer order workflows                                    |

## Using the API Explorer

Each endpoint page includes an interactive API Explorer. You can fill in parameters, send requests, and inspect responses directly in the browser — no external tools required.

## Authentication

All API requests require authentication. Include your API key in the request headers when making calls to any Plex endpoint.