IAS video pixels require a populated external session identifier.

The published IAS UVP guide defines vevent paths, generated tag identifiers and the external session field xsId. Empty session IDs are an observable contract violation.

Optional application, privacy and diagnostic fields follow their published formats. Correlating the same session across surrounding pixels requires a complete ad session.

Apply the contracts within their published source scope.

Optional application, privacy and diagnostic fields follow their published formats. Correlating the same session across surrounding pixels requires a complete ad session.

What this pack matches

Hosts: unified.adsafeprotected.com
Paths: /vevent/
Vendor docs: assets.ctfassets.net/o1orzsgogjpz/4Q8TPW9OcTv2lg35DRf3DX/7a0bd2d4564e4fea7cff97cb6137088e/IAS_Video_Solutions_Guide_.pdf

Rules

Codes are stable. A finding in CI, MCP, or the playground lands on the same id.

Field	Required	What it checks	Rule ids	Source
`event_name`	required	Published UVP paths identify their event here. The guide shows seven events but does not declare a closed event enumeration. Evidence: vendor template.	`vendor.ias-video-pixel.param.event_name.missing` `vendor.ias-video-pixel.param.event_name.empty`	docs
`advertiser_id`	required	Numeric generated IAS tag identifier, preserved from the published UVP template. Evidence: vendor template.	`vendor.ias-video-pixel.param.advertiser_id.missing` `vendor.ias-video-pixel.param.advertiser_id.empty` `vendor.ias-video-pixel.param.advertiser_id.invalid`	docs
`publisher_id`	required	Numeric generated IAS tag identifier, preserved from the published UVP template. Evidence: vendor template.	`vendor.ias-video-pixel.param.publisher_id.missing` `vendor.ias-video-pixel.param.publisher_id.empty` `vendor.ias-video-pixel.param.publisher_id.invalid`	docs
`xsId`	required	IAS explicitly requires the external ad-session identifier for UVP/CTV impression registration. UUIDv4 is recommended, so an opaque nonempty ID is accepted.	`vendor.ias-video-pixel.param.xsId.missing` `vendor.ias-video-pixel.param.xsId.empty`	docs
`gdpr`	optional	Optional published UVP template field. The guide gives no closed grammar or unconditional presence requirement.		docs
`gdpr_consent`	optional	Optional published UVP template field. The guide gives no closed grammar or unconditional presence requirement.		docs
`gdpr_pd`	optional	Optional published UVP template field. The guide gives no closed grammar or unconditional presence requirement.		docs
`ias_xmtp`	optional	Optional published UVP template field. The guide gives no closed grammar or unconditional presence requirement.		docs
`ias_xmapp`	optional	Optional published UVP template field. The guide gives no closed grammar or unconditional presence requirement.		docs
`ias_xappb`	optional	Optional published UVP template field. The guide gives no closed grammar or unconditional presence requirement.		docs
`omidPartner`	optional	Optional published UVP template field. The guide gives no closed grammar or unconditional presence requirement.		docs
`bundleId`	optional	Optional published UVP template field. The guide gives no closed grammar or unconditional presence requirement.		docs
`ias_xerr`	optional	Optional published UVP template field. The guide gives no closed grammar or unconditional presence requirement.		docs
`xdebug`	optional	Documented reporting or debugging input. Platform prerequisites and cross-session uniqueness are external.		docs
`campaign_id`	optional	Documented reporting or debugging input. Platform prerequisites and cross-session uniqueness are external.		docs
`placement_id`	optional	Documented reporting or debugging input. Platform prerequisites and cross-session uniqueness are external.		docs

Validate a payload

pixellint validate url "$ARTIFACT" --rulepack vendor/ias-video-pixel

Or paste it into the playground. Same engine, in the browser, nothing sent anywhere.

cargo install pixellint · npm install pixellint