# Receiving Bids from Retreaver in CallGrid

> This guide will walk you through providing your publishers in Retreaver with your CallGrid posting instructions.

Source: https://callgrid.com/knowledge-base/receiving-bids-from-retreaver-in-callgrid
Last updated: 2025-09-23
Topics: Integrations, Real Time Bidding

This guide will walk you through providing your publishers in Retreaver with your CallGrid posting instructions.

## Quick Setup Steps

1. Navigate to the **Campaigns** page in CallGrid
2. Click on any **Bidding Campaign** and go to the **Sources** tab
3. To receive posting instructions for a Source, simply click the **Code Icon** next to the Source
4. This will open the posting instructions
5. Select "**Retreaver**" from the platform dropdown and select any tags you wish them to send you
6. Click the copy button next to the URL and send it to your publisher

![](https://callgrid.com/api/media/file/RetreaverPosting.png)

## Next Steps

Send this link along with our posting instructions: [**Posting Bids from Retreaver to CallGrid using RTB**](https://callgrid.com/knowledge-base/posting-bids-from-retreaver-to-callgrid-using-rtb)

If you want to postback conversions to their Retreaver campaign based on a payable event in CallGrid, contact CallGrid support for conversion tracking setup.

## Getting Your Grid ID

Your Grid ID is automatically included in the posting instructions URL. If you need to reference it separately:

1. Navigate to **Campaigns** in CallGrid
2. Select your **Bidding campaign**
3. Click on the **Sources** tab
4. Copy the **Grid ID** from the appropriate source