> ## Documentation Index
> Fetch the complete documentation index at: https://docs.abbyy.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Web Services Mobile API

> Build mobile clients for ABBYY FlexiCapture with the Web Services Mobile API: request parameters, upload files, and authenticate with a Bearer ticket.

For the best performance of a mobile client app, it is important to minimize the number of requests sent to the server. The Web Services Mobile API allows you to develop high-performance applications for mobile clients where the number of requests to the server is kept to a minimum.

In the most typical scenario, you have to complete the following two steps:

1. Request the parameters
2. Upload a file to the server

## Authentication

To connect mobile clients to the server, basic authentication is used. If authentication is successful, the server will send a response to the client containing an authentication ticket in the "AuthTicket" header. Now you can pass this ticket in subsequent requests to the server instead of the user name and password. The ticket should be placed in the "Bearer" header.

<Accordion title="Example of passing an authentication ticket">
  ```
  Authorization: Bearer <ticket value>
  ```
</Accordion>