curl --request PATCH \
  --url https://app.thinnest.ai/api/v1/contacts/{id} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "consent": {
    "status": "withdrawn",
    "source": "Replied STOP on WhatsApp, 6 Oct"
  },
  "tags": [
    "sky-towers"
  ]
}
'

const options = {
  method: 'PATCH',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    consent: {status: 'withdrawn', source: 'Replied STOP on WhatsApp, 6 Oct'},
    tags: ['sky-towers']
  })
};

fetch('https://app.thinnest.ai/api/v1/contacts/{id}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://app.thinnest.ai/api/v1/contacts/{id}"

payload = {
    "consent": {
        "status": "withdrawn",
        "source": "Replied STOP on WhatsApp, 6 Oct"
    },
    "tags": ["sky-towers"]
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.patch(url, json=payload, headers=headers)

print(response.text)

{
  "id": "cust_4e7b1c9d-2a6f-4385-b0d2-9f6a3e8c1b74",
  "phone": "919876543210",
  "name": "Asha Rao",
  "email": "asha.rao@gmail.com",
  "externalId": "LSQ-42",
  "tags": [
    "sky-towers"
  ],
  "language": "Hindi",
  "note": "Wants a 3BHK, east-facing, ready by March.",
  "consent": {
    "status": "withdrawn",
    "source": "Replied STOP on WhatsApp, 6 Oct",
    "recordedAt": "2026-10-06T11:05:37.640Z"
  },
  "source": "api",
  "acquiredFrom": null,
  "createdAt": "2026-09-17T09:40:02.311Z"
}

{
  "error": "Nothing to change — the body named no field this API knows."
}

{
  "error": "Send a valid API key as `Authorization: Bearer <key>`."
}

{
  "error": "This API key is read-only: it can read everything but change nothing."
}

{
  "error": "That contact was not found."
}

{
  "error": "Another contact already has that `phone` or `externalId`."
}

{
  "error": "Over 240 requests a minute. Slow down and retry."
}