curl -X POST "https://api.contactship.ai/v1/contacts/c1d2e3f4-a5b6-7890-cdef-123456789012/tags/tag-a1b2c3d4-e5f6-7890-abcd-ef1234567890" \ -H "x-api-key: your-api-key"
{ "id": "ct-x1y2z3a4-b5c6-7890-defg-hi1234567890", "contact_id": "c1d2e3f4-a5b6-7890-cdef-123456789012", "tag_id": "tag-a1b2c3d4-e5f6-7890-abcd-ef1234567890", "created_at": "2026-04-06T14:30:00Z" }
Assign a tag to a contact
401 Unauthorized
404 Not Found
500 Internal Server Error