vendor/comscore · vendor documented

Comscore collect beacons need c1, c2, and c7

The final tag call is /b or /p. c1 is 2. c2 is the client ID from Comscore Direct. c7 is the absolute page URL. beacon.js is the loader, not this pack.

What this pack matches

Hosts: b.scorecardresearch.com, sb.scorecardresearch.com
Paths: /b, /p
Vendor docs: direct-support.comscore.com/hc/en-us/articles/360002578333-How-can-I-validate-my-tag-is-working-as-intended

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
`c1`	required	Comscore documents `c1=2` on the publisher beacon. Fix: Set `c1` to `2` as in the generated Comscore Direct tag.	`vendor.comscore.param.c1.missing` `vendor.comscore.param.c1.empty` `vendor.comscore.param.c1.invalid`	docs
`c2`	required	It is the numeric Comscore client ID, at least seven digits. Fix: Set `c2` to the seven-digit client ID from Comscore Direct.	`vendor.comscore.param.c2.missing` `vendor.comscore.param.c2.empty` `vendor.comscore.param.c2.invalid`	docs
`c7`	required	It is the full page URL, including the query string. Comscore documents it as required on the final `/b` tag call. Fix: Set `c7` to the absolute URL of the page that fired the beacon.	`vendor.comscore.param.c7.missing` `vendor.comscore.param.c7.empty` `vendor.comscore.param.c7.invalid`	docs

Validate a payload

pixellint validate url "$ARTIFACT" --rulepack vendor/comscore

Try this failing payload in the playground. Comscore beacon missing client ID c2.

https://b.scorecardresearch.com/b?c1=2&c7=https://example.com/page

cargo install pixellint · npm install pixellint