New Bidder: Epom Ad Server - #6714
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Documentation for the epom_as bid adapter, available on both Prebid.js and Prebid Server. Distinct from the existing epom_dsp and epom pages, which document the buy side of the Epom platform. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
…arameters The privacy section said no cookies are sent and named withCredentials: false. The adapter sends credentials, and has since the commit that made the ad server answer with the request origin rather than a wildcard — so the published page claimed the opposite of the code on the one line a privacy reviewer diffs. channel and customParams were added to the adapter and to its module markdown but never reached this table, which documented four of six parameters. Server-side support is declared false until the Prebid Server adapter is actually submitted; the frontmatter feeds the bidder table on docs.prebid.org, and publishers would otherwise configure something that does not exist.
The page had no test block, and the example used a hostname that does not exist, so nobody could verify the adapter without an Epom account of their own. The placement below is kept filled for exactly this purpose.
Set to false a moment ago on the grounds that nothing was submitted yet. Putting it back: the Prebid Server pull request goes out tomorrow, and a flag flipped off 'until then' is the kind of thing nobody remembers to flip back. The docs pull request will not merge ahead of it.
The front matter declared no GPP support while the page's own privacy section described forwarding regs.gpp and regs.gpp_sid. The prose was right: the adapter is built on ortbConverter, which carries both, so the flag now names the sections it really covers. fpd_supported was set with no First Party Data section, which the contributor guide does not allow. The section is written rather than the flag removed, because the support is real and worth stating precisely: custom parameters are merged into imp.ext.data, and a key already on the impression wins. The dead userId key is gone and userIds carries a value. The parameter table documents every constraint the params schema applies, including the ones it gained.
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This was referenced Aug 20, 2026
The page said both transports send the same OpenRTB payload. What is the same is the payload Epom reads; the calls themselves differ in two ways a publisher will otherwise meet as a surprise. A server-side call carries no cookies, so per-user frequency capping needs user.buyeruid from a cookie sync. And the reader's address arrives in a header the adapter forwards from device.ip, because the connection comes from the Prebid Server host rather than from the reader. Also drops "the one difference" from the host paragraph, which stopped being true once there were three.
Reordering the transport paragraphs left two blank lines before the next heading, which markdownlint MD012 refuses.
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🏷 Type of documentation
📋 Checklist
Description
Documentation for Epom Ad Server (
epom_as), a new sell-side bid adapter submitted for bothPrebid.js and Prebid Server.
Epom Ad Server is white-label: each network runs its own deployment on its own domain, so the
serving host is supplied per ad unit via
params.hostand the adapter posts tohttps://{host}/hb/bid.Only the host is configurable — the request path is fixed by the adapter, so a page configuration
cannot redirect the auction payload. A page may mix several deployments; impressions are grouped by
host and one request goes to each.
Banner only, GVL vendor 849, TCF EU and USP signals forwarded via
ortbConverter. Maintainer:support@epom.com.
Related pull requests: