# Contributor's backtest guide

### 1. Integration via Contributor API endpoint

The Contributor first needs to create API and join the LenderLink platform per the [contributor-api-development-guide](https://docs.lenderlink.ph/product-guides/api-integration-guides/contributor-api-development-guide "mention")

### 2. Authentication

The Contributor needs to create different set of credentials for the API that are going to be used only for running backtests.

### 3. API requests 

The expected layout of the requests that LenderLink's API will send to the Contributors for backtesting is show below. 

* Query params:

{% hint style="info" %}
The **requestID** will be always in the format - backtest\[YYYYMMDD]\[prospect ID]\[5 digits] 

Example: backtest20250121aa00010000
{% endhint %}

<table><thead><tr><th width="171">Property Name</th><th width="147">Property Type</th><th>Mandatory</th><th>Description</th></tr></thead><tbody><tr><td>requestId</td><td>String</td><td>Yes</td><td>Unique identifier</td></tr><tr><td>mobileNumber</td><td>String</td><td>Yes</td><td>Borrower's mobile number</td></tr><tr><td>prospectID</td><td>String</td><td>No</td><td>Unique identifier that we give to all prospect clients that we do backtest for. Example: aa000</td></tr></tbody></table>