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"

const contactId = 'c1d2e3f4-a5b6-7890-cdef-123456789012';
const tagId = 'tag-a1b2c3d4-e5f6-7890-abcd-ef1234567890';

const response = await fetch(
  `https://api.contactship.ai/v1/contacts/${contactId}/tags/${tagId}`,
  {
    method: 'POST',
    headers: { 'x-api-key': 'your-api-key' },
  }
);
const result = await response.json();

import requests

contact_id = 'c1d2e3f4-a5b6-7890-cdef-123456789012'
tag_id = 'tag-a1b2c3d4-e5f6-7890-abcd-ef1234567890'

response = requests.post(
    f'https://api.contactship.ai/v1/contacts/{contact_id}/tags/{tag_id}',
    headers={'x-api-key': 'your-api-key'},
)
print(response.json())

{
  "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"
}