Add contacts to user list

documented

Add a set of users to a user list.

POST /advertising/userLists/{listID}/contactsUser Listsno implementation yet0 runs

Runs (30 d)

Success rate

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p50 latency

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p95 latency

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Distinct callers

Runs per day

No run in the last 30 days.

Every run is logged with a redacted input and an anonymised output shape. Stages promote automatically: developed after one good run, tested when benchmarks pass, reliable at ≥97% over 30 days across several callers.