Regional Amazon Ad Tag events use separate collector routes.

The EU and FE Amazon Ad Tag collectors use /s/iu3 on aax-eu.amazon-adsystem.com and aax-fe.amazon-adsystem.com. The main collector uses a separate route.

The pack checks populated event data and optional encoded structures. SDK profile checks remain advisory. Account eligibility and delivery need external context.

What this pack matches

Hosts: aax-eu.amazon-adsystem.com, aax-fe.amazon-adsystem.com
Paths: /s/iu3
Vendor docs: raw.githubusercontent.com/amzn/ads-pao-amznjs-gtm-server-side-template/main/template.tpl

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
`pid`	recommended	The producer sends its configured tag identity. The browser SDK accepts UUIDs; the server template leaves identity grammar open. Presence diagnostic severity: warning.	`vendor.amazon-ad-tag-regional.param.pid.missing` `vendor.amazon-ad-tag-regional.param.pid.empty`	docs
`event`	recommended	The event name is open and limited to 256 UTF-16 code units by both pinned producers. Presence diagnostic severity: warning. Maximum decoded UTF-16 code units: 256.	`vendor.amazon-ad-tag-regional.param.event.missing` `vendor.amazon-ad-tag-regional.param.event.empty` `vendor.amazon-ad-tag-regional.param.event.invalid`	docs
`eventSource`	optional	The browser SDK marks its requests with amzn.js. Other producers remain open.		docs
`items`	optional	Array-style event attributes are serialized as JSON.		docs
`amazonConsentString`	optional	The producer serializes the optional consent object as JSON.		docs
`reporting_attributes…`	optional	Both producers normalize these reserved reporting attributes to ASCII letters, digits and underscores. Presence diagnostic severity: warning. Maximum decoded UTF-16 code units: 256.	`vendor.amazon-ad-tag-regional.param.reporting_attributes.empty` `vendor.amazon-ad-tag-regional.param.reporting_attributes.invalid`	docs
`clientDedupeId`	optional	The browser SDK retains nonempty deduplication strings through 256 UTF-16 code units. Cross-event uniqueness is external. Applies when {"kind":"value_in","param":"eventSource","values":["amzn.js"]}. Presence diagnostic severity: warning. Maximum decoded UTF-16 code units: 256.	`vendor.amazon-ad-tag-regional.param.clientDedupeId.invalid`	docs
`eventId`	optional	The browser SDK retains nonempty deduplication strings through 256 UTF-16 code units. Cross-event uniqueness is external. Applies when {"kind":"value_in","param":"eventSource","values":["amzn.js"]}. Presence diagnostic severity: warning. Maximum decoded UTF-16 code units: 256.	`vendor.amazon-ad-tag-regional.param.eventId.invalid`	docs
`uuid`	optional	The browser generates a per-request UUID when crypto.randomUUID is available. Presence diagnostic severity: warning.	`vendor.amazon-ad-tag-regional.param.uuid.empty` `vendor.amazon-ad-tag-regional.param.uuid.invalid`	docs
`ts`	optional	The SDK stamps browser events with epoch milliseconds. Applies when {"kind":"value_in","param":"eventSource","values":["amzn.js"]}. Presence diagnostic severity: warning.	`vendor.amazon-ad-tag-regional.param.ts.empty` `vendor.amazon-ad-tag-regional.param.ts.invalid`	docs
`browser.tag_id`	recommended	The browser SDK expects its configured tag identity to be a UUID.	`vendor.amazon-ad-tag-regional.browser.tag_id`	docs
`root`	optional	The pinned SDK emits this JSON type. Decoded body source: items. Encoding: json. Decoding diagnostic severity: warning. Applies when {"kind":"present","param":"items"}. Presence diagnostic severity: warning. Native JSON type: array.	`vendor.amazon-ad-tag-regional.body.root.invalid`	docs
`root`	optional	The pinned SDK emits this JSON type. Body scope: []. Decoded body source: items. Encoding: json. Decoding diagnostic severity: warning. Applies when {"kind":"present","param":"items"}. Presence diagnostic severity: warning. Native JSON type: object.	`vendor.amazon-ad-tag-regional.body.root.invalid`	docs
`root`	optional	The pinned SDK emits this JSON type. Decoded body source: amazonConsentString. Encoding: json. Decoding diagnostic severity: warning. Applies when {"kind":"present","param":"amazonConsentString"}. Presence diagnostic severity: warning. Native JSON type: object or null.	`vendor.amazon-ad-tag-regional.body.root.invalid`	docs
`geo`	optional	The pinned SDK emits this JSON type. Decoded body source: amazonConsentString. Encoding: json. Decoding diagnostic severity: warning. Applies when {"kind":"present","param":"amazonConsentString"}. Presence diagnostic severity: warning. Native JSON type: object.	`vendor.amazon-ad-tag-regional.body.geo.invalid`	docs
`geo.countryCode`	optional	The pinned SDK emits this JSON type. Decoded body source: amazonConsentString. Encoding: json. Decoding diagnostic severity: warning. Applies when {"kind":"present","param":"amazonConsentString"}. Presence diagnostic severity: warning. Native JSON type: string.	`vendor.amazon-ad-tag-regional.body.geo.countryCode.invalid`	docs
`geo.ipAddress`	optional	The pinned SDK emits this JSON type. Decoded body source: amazonConsentString. Encoding: json. Decoding diagnostic severity: warning. Applies when {"kind":"present","param":"amazonConsentString"}. Presence diagnostic severity: warning. Native JSON type: string.	`vendor.amazon-ad-tag-regional.body.geo.ipAddress.empty` `vendor.amazon-ad-tag-regional.body.geo.ipAddress.invalid`	docs
`consent`	optional	The pinned SDK emits this JSON type. Decoded body source: amazonConsentString. Encoding: json. Decoding diagnostic severity: warning. Applies when {"kind":"present","param":"amazonConsentString"}. Presence diagnostic severity: warning. Native JSON type: object.	`vendor.amazon-ad-tag-regional.body.consent.invalid`	docs
`consent.amazonConsentFormat`	optional	The pinned SDK emits this JSON type. Decoded body source: amazonConsentString. Encoding: json. Decoding diagnostic severity: warning. Applies when {"kind":"present","param":"amazonConsentString"}. Presence diagnostic severity: warning. Native JSON type: object.	`vendor.amazon-ad-tag-regional.body.consent.amazonConsentFormat.invalid`	docs
`consent.amazonConsentFormat.amzn_ad_storage`	optional	The pinned SDK emits this JSON type. Decoded body source: amazonConsentString. Encoding: json. Decoding diagnostic severity: warning. Applies when {"kind":"present","param":"amazonConsentString"}. Presence diagnostic severity: warning. Native JSON type: string.	`vendor.amazon-ad-tag-regional.body.consent.amazonConsentFormat.amzn_ad_storage.invalid`	docs
`consent.amazonConsentFormat.amzn_user_data`	optional	The pinned SDK emits this JSON type. Decoded body source: amazonConsentString. Encoding: json. Decoding diagnostic severity: warning. Applies when {"kind":"present","param":"amazonConsentString"}. Presence diagnostic severity: warning. Native JSON type: string.	`vendor.amazon-ad-tag-regional.body.consent.amazonConsentFormat.amzn_user_data.invalid`	docs
`consent.gpp`	optional	The pinned SDK emits this JSON type. Decoded body source: amazonConsentString. Encoding: json. Decoding diagnostic severity: warning. Applies when {"kind":"present","param":"amazonConsentString"}. Presence diagnostic severity: warning. Native JSON type: string.	`vendor.amazon-ad-tag-regional.body.consent.gpp.invalid`	docs
`consent.tcf`	optional	The pinned SDK emits this JSON type. Decoded body source: amazonConsentString. Encoding: json. Decoding diagnostic severity: warning. Applies when {"kind":"present","param":"amazonConsentString"}. Presence diagnostic severity: warning. Native JSON type: string.	`vendor.amazon-ad-tag-regional.body.consent.tcf.invalid`	docs
`method`	recommended	The pinned producer uses these transport methods. Complete HTTP capture contract. Presence diagnostic severity: warning.	`vendor.amazon-ad-tag-regional.http.method.missing` `vendor.amazon-ad-tag-regional.http.method.empty` `vendor.amazon-ad-tag-regional.http.method.invalid`	docs

Validate a payload

pixellint validate url "$ARTIFACT" --rulepack vendor/amazon-ad-tag-regional

Try this failing payload in the playground. An Amazon regional collector without an event name.

https://aax-eu.amazon-adsystem.com/s/iu3?pid=synthetic

cargo install pixellint · npm install pixellint