> For the complete documentation index, see [llms.txt](https://docs.relevant-digital.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.relevant-digital.com/hb-manager/auction-behavior-and-optimization/prebid-parameters-advanced.md).

# Prebid parameters - Advanced

This article explains the basics of the Prebid parameter menus and the order they are applied in.

Many settings for HBA are available from the **Prebid parameters** menus. These settings are applied via a hierarchy described later in this document.

<div data-with-frame="true"><img src="/files/69280523ec98dd8cde28364d817ca210642bbaa9" alt=""></div>

The settings have different scopes. In general they are applied per **placement**, with the exception of **Generic Prebid Config Data** and **User ID modules** that are applied per **Prebid configuration**.

* **General settings** - Used for enabling *Mobile App* and *AMP* support per placement.
* **Generic Placement Data** - Both *built-in* settings per placement (e.g. reload / lazy-load) and *user-created* settings per placement. Such user-created settings are available in JavaScript and created using [**Placement Tag Fields**](broken://pages/8f017c8d4044c912c7a0d23732447be75304cc4e).
* **Generic Prebid Config Data** - Both *built-in* settings per **Prebid configuration** (e.g. custom JavaScript and prebid timeouts) and *user-created* settings per Prebid configuration. Such user-created settings are available in JavaScript and created using [**Prebid Config Tag Fields**](broken://pages/b3142ee728d67df65ee037741736e54d63ccc947).
* **Outstream video settings** - Settings for *outstream* video per placement.
* **Instream video settings** - Settings for *instream* video per placement.
* **Native settings** - Settings for *native* content per placement
* **SSPs** - One box of settings per header bidding-supported SSP. These settings are applied per placement and include the [*bidder parameters*](https://docs.prebid.org/dev-docs/bidders.html). See below.
* **User ID modules** - One box of settings per [User ID module](broken://pages/43b09c50d13cb0d9cb47900cc1f74238ae488b2b) added.

## SSPs and bidder parameters

The SSP settings let you control settings including custom bidder parameters per SSP and placement.

<div data-with-frame="true"><img src="/files/ba5a2a3fbdf56f82c219b27fe82527459c1b89bf" alt=""></div>

* The first parameters are built-int parameters such as **Disable Bidder** and **Bidding type**.
* For some SSPs, there are built-in UI elements for certain bidder parameters. In the example above **Site ID** is used to control the **siteId** bidder parameter for Rubicon/Magnite ([link](https://docs.prebid.org/dev-docs/bidders/rubicon.html#bid-params)).
* **Custom Parameters** are used for manually editing the bid parameters so that there are no built-in UI elements.
* **Inherited parameters** show settings already inherited from a higher level in the setting hierarchy (*read-only*). **Parameters** are where you can edit the bid parameters directly using JSON.

## Order prebid parameters are applied - the "settings hierarchy"

Sometimes you want to apply settings globally, sometimes per websites, and sometimes per placement, etc. Therefore the **Prebid parameters** settings are available on multiple levels and applied in a certain order.

On every level in this hierarchy, **you can override the settings from the higher levels** using the "*override toggle*" that exists for every setting. When a setting is not overridden the grayed-out value represents the current value as *inherited* from a higher level - or from the settings' default value.

### Order per-placement settings are applied:

1. Global level - Prebid parameters
2. Global level / Account level - Placement type prebid parameters
3. Account level (Publisher) - Prebid parameters
4. Site level - Prebid parameters
5. Placement level - Prebid parameters
6. Prebid configuration prebid paramters on Account level
7. Prebid configuration prebid paramters on Site level
8. Prebid configuration prebid paramters on Placement level
9. *(when applicable)* Child Prebid configuration prebid paramters on Account level
10. *(when applicable)* Child Prebid configuration prebid paramters on Site level
11. *(when applicable)* Child Prebid configuration prebid paramters on Placement level

### Order per-placement settings are applied - with images where they are located:

1. Global level - Prebid parameters

   <div data-with-frame="true"><img src="/files/be568b414385d3c2ac2dad7b69b60d5aea518044" alt=""></div>
2. Global level / Account level - Placement type prebid parameters

   <div data-with-frame="true"><img src="/files/ad2f9253e62579fcc99f72b9fc1d1a52f47697a4" alt=""></div>
3. Account level (Publisher) - Prebid parameters

   <div data-with-frame="true"><img src="/files/132115181b67d253177db2e659f989f336fd6d66" alt=""></div>
4. Site level - Prebid parameters

   <div data-with-frame="true"><img src="/files/3311f0e6b4246e181978d27e2326e6be3320c273" alt=""></div>
5. Placement level - Prebid parameters

   <div data-with-frame="true"><img src="/files/42fdc3cb9ef86dc703d708ffaa3ecbf1b4465740" alt=""></div>

   **Notice:** The **Generic Placement Data** settings are available directly *below* the **Prebid parameters** *instead* of in the menu itself.
6. Prebid configuration prebid paramters on Account level
7. Prebid configuration prebid paramters on Site level
8. Prebid configuration prebid paramters on Placement level

   <div data-with-frame="true"><img src="/files/99e1c5faba1c9183403ead018acc95c09164b1df" alt=""></div>

   **Notice:** The image above shows all 3 of levels 6-8.
9. *(when applicable)* Child Prebid configuration prebid paramters on Account level
10. *(when applicable)* Child Prebid configuration prebid paramters on Site level
11. *(when applicable)* Child Prebid configuration prebid paramters on Placement level

<div data-with-frame="true"><img src="/files/2578da58a0c0cca2f6da5a148bc1ab9ff7a31657" alt=""></div>

**Notice:** The image above shows all 3 of levels 9-11. These settings are only applied when a *child* prebid configuration is indeed used.

### Order Generic Prebid Config Data settings are applied:

1. Global prebid parameters
2. Account (Publisher) prebid parameters
3. Site prebid parameters
4. Prebid configuration - under **Configuration data**
5. *(when applicable)* Child Prebid configuration - under **Configuration Data**


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.relevant-digital.com/hb-manager/auction-behavior-and-optimization/prebid-parameters-advanced.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.