New adapter: Engerio

[david-thinkeasy]

Type of change

• New bidder adapter

• Does this change affect user-facing APIs or examples documented on http://prebid.org?

Yes - docs PR here: prebid/prebid.github.io#6576

Description of change

New bidder adapter: Engerio

Contact e-mail: info@thinkeasy.cz or david@thinkeasy.cz

Test parameters for validating bids:

{
  "bidder": "engerio",
  "params": {
    "adUnitCode": "example-test"
  }
}

and dimensions:

"banner": {
        "w": 300,
        "h": 300,
        "format": [
          {
            "w": 300,
            "h": 300
          }
        ]
      }

Ad slot scope

Engerio slot resolution is host-scoped. If you require a live test, these values should be used:

site:page   = 'https://example.com/article'
site:domain = 'example.com'

If tested with a different page URL/host, the auction may return no bid even with a valid adUnitCode.

Example gist

I'm attaching a gist that shows a testing request and response, if useful.

[chatgpt-codex-connector]

💡 Codex Review

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Reviewed commit: 9ba7d35ebb

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[chatgpt-codex-connector]

Send the auction payload as text/plain

For every cross-origin auction request this application/json content type forces the browser to issue a CORS preflight OPTIONS request before the bid POST, adding latency and failing entirely if the endpoint or an intermediary does not handle preflights. Prebid review guidance explicitly discourages application/json adapter calls for this reason; the request can still JSON.stringify the OpenRTB body while using the default/plain content type.

Useful? React with 👍 / 👎.

[david-thinkeasy]

Implemented.

[chatgpt-codex-connector]

Route win notices through Prebid ajax

When a bid includes nurl, this calls window.fetch directly instead of Prebid's core communication wrapper. That bypasses the ajax/fetch hooks used for request instrumentation, timeout handling, and activity-policy processing, despite the module rules requiring modules to use core communication functions for external calls; use the exported ajax helper with keepalive: true for this low-priority win notice.

Useful? React with 👍 / 👎.

[david-thinkeasy]

Implemented.

[chatgpt-codex-connector]

Avoid reading navigator directly from the adapter

This vendor module reads navigator.userAgent directly whenever it builds a request. The repo review rules say adapter modules should not access navigator directly; the user-agent should come from a common/core method or already-normalized request data so browser APIs remain centralized and privacy/fingerprinting handling is consistent across modules.

Useful? React with 👍 / 👎.

[david-thinkeasy]

Implemented.

[david-thinkeasy]

Changes based on comments from Codex's review should be implemented now.