curl -X PATCH https://restapi.fax.plus/v3/webhooks/{endpoint_id} \
  -H 'Content-Type: application/json' \
  -H 'Accept: application/json' \
  -H 'Authorization: Bearer {access-token}' \
  -d '{
    "url": "https://example.com/fax-webhooks",
    "filter_types": ["fax_sent"],
    "channels": null
  }'

import requests

resp = requests.patch(
    "https://restapi.fax.plus/v3/webhooks/{endpoint_id}",
    headers={"Authorization": "Bearer {access-token}", "Content-Type": "application/json"},
    json={"url": "https://example.com/fax-webhooks", "channels": None},
)
print(resp.status_code)

{}

{
  "error": "bad_request",
  "description": "Invalid phone number: not-a-number"
}

{
  "error": "plan_not_eligible"
}

{
  "error": "bad_request",
  "description": "hook_not_found"
}

{
  "error": "server_error",
  "description": "server_error"
}