Google live PCS view templates retain their signed fields.

The official Google IMA live sample returns securepubads.g.doubleclick.net/live/pcs/view. Missing or blank xai, sai and sig values produce template-completeness warnings.

Tokens remain opaque. Empty adurl remains accepted, and other host-route combinations do not inherit this source profile.

Template checks leave signature validation to the destination.

A populated sig field does not establish account state, token authenticity or successful remote acceptance.

Rule: vendor.google-ima-live-pcs.param.sig.missing

What this pack matches

Hosts: securepubads.g.doubleclick.net
Paths: /live/pcs/view
Vendor docs: developers.google.com/interactive-media-ads/docs/sdks/html5/client-side/tags

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
`xai`	recommended	Nonempty opaque signed field in the official IMA sample response. Only template completeness is observable. Presence diagnostic severity: warning.	`vendor.google-ima-live-pcs.param.xai.missing` `vendor.google-ima-live-pcs.param.xai.empty`	docs
`sai`	recommended	Nonempty opaque signed field in the official IMA sample response. Only template completeness is observable. Presence diagnostic severity: warning.	`vendor.google-ima-live-pcs.param.sai.missing` `vendor.google-ima-live-pcs.param.sai.empty`	docs
`sig`	recommended	Nonempty opaque signed field in the official IMA sample response. Only template completeness is observable. Presence diagnostic severity: warning.	`vendor.google-ima-live-pcs.param.sig.missing` `vendor.google-ima-live-pcs.param.sig.empty`	docs
`adurl`	optional	Optional source-generated callback field. Empty adurl is explicitly emitted by the official view template.		docs
`uach_m`	optional	Optional source-generated callback field. Empty adurl is explicitly emitted by the official view template.		docs

Validate a payload

pixellint validate url "$ARTIFACT" --rulepack vendor/google-ima-live-pcs

Try this failing payload in the playground. A Google live PCS view template missing sig.

https://securepubads.g.doubleclick.net/live/pcs/view?xai=x&sai=s

cargo install pixellint · npm install pixellint