curl --request PATCH \
  --url https://app.thinnest.ai/api/v1/phone-numbers/{number} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "label": "Front desk",
  "agent": "ag_3f6a9c21-7d4e-4b58-9a1f-0c2e8b7d5a34",
  "callingAgent": "ag_9b0e4d17-5a2c-4e6f-b381-7c4d2a0f9e15"
}
'

const options = {
  method: 'PATCH',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    label: 'Front desk',
    agent: 'ag_3f6a9c21-7d4e-4b58-9a1f-0c2e8b7d5a34',
    callingAgent: 'ag_9b0e4d17-5a2c-4e6f-b381-7c4d2a0f9e15'
  })
};

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

import requests

url = "https://app.thinnest.ai/api/v1/phone-numbers/{number}"

payload = {
    "label": "Front desk",
    "agent": "ag_3f6a9c21-7d4e-4b58-9a1f-0c2e8b7d5a34",
    "callingAgent": "ag_9b0e4d17-5a2c-4e6f-b381-7c4d2a0f9e15"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

{
  "number": "918041234567",
  "label": "Front desk",
  "source": "rented",
  "agent": "ag_3f6a9c21-7d4e-4b58-9a1f-0c2e8b7d5a34",
  "since": "2026-09-02T07:15:40.118Z",
  "provider": null,
  "callingAgent": "ag_9b0e4d17-5a2c-4e6f-b381-7c4d2a0f9e15"
}

{
  "error": "Nothing to change — send `label`, `agent` or `callingAgent`."
}

{
  "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": "Agent not found."
}

{
  "error": "Turn voice on for that agent first, then move the number to it."
}

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