> For the complete documentation index, see [llms.txt](https://docs.exads.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.exads.com/rtb/publishers/open-rtb/open-rtb-2p5-pub-response.md).

# Prebid / OpenRTB 2.5 Bid Response

The response for a bid request has the following structure:

## Bid Response Object <a href="#bid-response-object" id="bid-response-object"></a>

| Attribute | Required? | Description                                                         |
| --------- | --------- | ------------------------------------------------------------------- |
| id        | Yes       | ID of the bid request (string)                                      |
| seatbid   | Yes       | Collection of bids made by the bidder on behalf of a specific seat. |

## seatbid <a href="#seatbid" id="seatbid"></a>

| Attribute | Required? | Description                                                    |
| --------- | --------- | -------------------------------------------------------------- |
| bid       | Yes       | ID of the impression object to which this bid applies (string) |

## seatbid.bid <a href="#seatbidbid" id="seatbidbid"></a>

| Attribute | Required? | Description                                                                                                                                                                                                      |
| --------- | --------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| id        | Yes       | ID for the bid object chosen by the bidder (string)                                                                                                                                                              |
| impid     | Yes       | ID of the impression object to which this bid applies (string)                                                                                                                                                   |
| price     | Yes       | Bid price in CPM or CPC (float)                                                                                                                                                                                  |
| adm       | Yes       | EXADS XML/JSON Ad Markup (string)                                                                                                                                                                                |
| nurl      | No        | Win notification URL (string)                                                                                                                                                                                    |
| burl      | No        | Billing notification URL. Called server-to-server when the impression or click becomes billable (CPM or CPC, per the `btype` field), so it can be counted from the billable event instead of the pixel. (string) |
| cid       | No        | Campaign ID to assist with ad quality checking (string)                                                                                                                                                          |
| crid      | No        | Creative ID to assist with ad quality checking (string)                                                                                                                                                          |
| ext       | No        | EXADS specific extension (object)                                                                                                                                                                                |

### seatbid.bid.ext <a href="#seatbidbidext" id="seatbidbidext"></a>

| Attribute | Required?   | Description                                                 |
| --------- | ----------- | ----------------------------------------------------------- |
| btype     | Recommended | Pricing Model. Values: 1 = CPM, 2 = CPC. Default = 1 (int). |

## JSON Examples <a href="#json-examples" id="json-examples"></a>

### Banner: JSON <a href="#banner-json" id="banner-json"></a>

```json
{
    "id": "d4b5c697-41f3-4c1c-a3d5-5fd01b5ef2aa",
    "seatbid": [{
        "bid": [{
            "id": "1737294d31e606ef366cbf9fd30ca409c8819978",
            "impid": "974090632",
            "price": 0.55,
            "adm": "<EXADS_XML_OR_JSON_OR_HTML_AD_MARKUP>",
            "ext": {
                "btype": 1
            },
            "nurl": "http:\/\/network-domain.com\/not.php?zid=4068569&data=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",
            "cid" : "123456",
            "crid" : "22334455"
        }]
    }]
}
```

## ADM Examples <a href="#adm-examples" id="adm-examples"></a>

### Banner: HTML (a tag) <a href="#banner-html-a-tag" id="banner-html-a-tag"></a>

```
<a href=\"https:\/\/sitedomain.com\/click.php?data=H4sIAAAAAAAAA0WOO27DQAxEr6LG7YLf_ZRp0qTIGVarFSzEtgJZhh2Ahw.jJjNkRc7gCXLJkkwB7Lzv3_cTv53o3ef5fIblNvVXOG9m6DKMmCgmgmLjWL.WrYe2Xg0hCAUIaKIMWVhNIGaNxWuzmaCRFxiYsDHAixTM28w0aaGZmedcMgfwaE4YiTIJKkT1TFTNTaZ55KKpliKaJTZujR1pbs3.iu_L3qf1WpfbQQSHh8sy9_v.c.nD.XFdH9tgx_O_zRedkFzmGGw5HQfntc8P40I6TalC6dgrjyipdaxjS5hkAvoFeR9FKz4BAAA-\" target=\"_blank\" ontouchstart=\"\" onclick=\"var href='https:\/\/sitedomain.com\/click.php?data=H4sIAAAAAAAAA0WOO27DQAxEr6LG7YLf_ZRp0qTIGVarFSzEtgJZhh2Ahw.jJjNkRc7gCXLJkkwB7Lzv3_cTv53o3ef5fIblNvVXOG9m6DKMmCgmgmLjWL.WrYe2Xg0hCAUIaKIMWVhNIGaNxWuzmaCRFxiYsDHAixTM28w0aaGZmedcMgfwaE4YiTIJKkT1TFTNTaZ55KKpliKaJTZujR1pbs3.iu_L3qf1WpfbQQSHh8sy9_v.c.nD.XFdH9tgx_O_zRedkFzmGGw5HQfntc8P40I6TalC6dgrjyipdaxjS5hkAvoFeR9FKz4BAAA-'; this.href = href + '&clickX=' + event.clientX + '&clickY=' + event.clientY;\"><img width=\"300\" height=\"250\" src=\"https:\/\/sitedomain.com\/library\/432437\/c506e8224d74d30b946f3398fe7bf9f90a9bf5ec.jpg\" border=\"0px\" style=\"\"><\/a><img src=\"https:\/\/sitedomain.com\/cimp.php?data=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\" width=\"1\" height=\"1\" border=\"0\" \/>
```

### Banner: HTML <a href="#banner-html" id="banner-html"></a>

```
<html><a href=\"http:\/\/www.examplesite.com\" target=\"_blank\"><img src =\"https:\/\/examplesite.com:8443\/image\/336x280.jpg\" \/><\/a><\/html><img src=\"https:\/\/sitedomain.com\/cimp.php?data=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-\" width=\"1\" height=\"1\" border=\"0\" \/>
```

### Banner: iFrame <a href="#banner-iframe" id="banner-iframe"></a>

```
<iframe src=\"https:\/\/examplesite.com\/testReturnMock.php?click_url=https:\/\/sitedomain.com\/click.php?data=H4sIAAAAAAAAA0WPy2oDMQxFfyWb2RrbkvxYtoRsSin0B4LH42mGeYV5QAr6.CpDIZK9kK98dYQGYiDDpI3l27bd1wreKnuRM6Yp_ZSxTJsqj9Ssaplzv4qwlXX7Ltu.TJ_you63ewWXPHS5v.7LUMG58u.v0p8r68pjvuauEQ3_B7KRYOOMt16bELiuU98tReV5ZKMVWqWVYSTQASEyahfIRQENzGjYigFrRmDQ.mFJs7gxk6doWwBoQwygNAIFb5y1waIh7Uj.OKKQsWlriORTjEgBXYacQZDanPlpvHZbaeYxddNBpI88DV0ry_8O5XTbx3lfTnw0v5LlGiG0EiwYwMEfgvDy1wdj8m1qnA9NyRZjzM.5VJMtPoBA_QF2muRLkAEAAA--;&exo_cid=4139851\" width=\"300\" height=\"250\" marginwidth=\"0\" marginheight=\"0\" frameborder=\"0\" sandbox=\"allow-pointer-lock allow-same-origin allow-popups allow-forms allow-scripts\" ><\/iframe><img src=\"https:\/\/sitedomain.com\/cimp.php?data=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-\" width=\"1\" height=\"1\" border=\"0\" \/>
```

## No Bid Response <a href="#no-bid-response" id="no-bid-response"></a>

To answer a bid request without making an actual bid, an HTTP response code 204 "No Content" will be sent.

## Win Notification <a href="#win-notification" id="win-notification"></a>

When the parameter **Bid Response Object -> Seat Bid Object -> Bid Object -> nurl** is in the bid response, a GET request must be performed to such URL.

## Billing Notification <a href="#billing-notification" id="billing-notification"></a>

When the parameter **Bid Response Object -> Seat Bid Object -> Bid Object -> burl** is in the bid response, a GET request is performed to that URL when the impression or click becomes billable (CPM or CPC, per the `btype` field). This allows the impression or click to be counted from the billable event rather than from pixel-based tracking.

If both `nurl` and `burl` are present, both should be called.


---

# 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.exads.com/rtb/publishers/open-rtb/open-rtb-2p5-pub-response.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.

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