Authorization

bearer contacts:write

headerAuthorizationBearer <token>

API key (rsl_live_…) from Settings → Developers.

Scope: contacts:write

Path Parameters

contactId*string

Contact id. Never invent ids – list resources first.

Length1 <= length <= 64

application/json

note?string

Why the contact is blocked (internal).

Lengthlength <= 1000

Success

application/json

id*string

blocked*true

Value intrue

curl -X POST "https://example.com/contacts/string/block" \  -H "Content-Type: application/json" \  -d '{}'

{  "id": "string",  "blocked": true}