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POST
/
api
/
leads
/
check-availability
Bulk Availability Check Endpoint
curl --request POST \
  --url https://app.tuco.ai/api/leads/check-availability \
  --header 'Authorization: Bearer <token>'

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Endpoint

  • Method: POST
  • Path: /api/leads/check-availability
This endpoint lets you check iMessage availability for multiple leads at once, or for a single arbitrary address, using the same logic Tuco uses internally.

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Check a Single Address (Quick Check)

Use this form to check one phone number or email address without creating a lead.
The address field must be a non-empty string. Sending { "address": "" } will not work — the empty string is ignored and Tuco falls through to the bulk leads path, which will likely return a 404 if you haven’t provided leadIds or listId.
{
  "address": "+12025551234"
}
Response 
{
  "success": true,
  "available": true,
  "address": "+12025551234"
}

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Bulk Check by Lead IDs

Provide a list of lead IDs in the current workspace. Tuco will:
  • Mark each lead as availabilityStatus: "available", "unavailable", or "error".
  • Return a summary of how many checks succeeded or failed.
{
  "leadIds": [
    "667f1f77bcf86cd799439012",
    "667f1f77bcf86cd799439013",
    "667f1f77bcf86cd799439014"
  ]
}
Response (synchronous small batch) 
{
  "success": true,
  "checked": 3,
  "successful": 3,
  "errors": 0,
  "results": [
    {
      "leadId": "667f1f77bcf86cd799439012",
      "available": true,
      "status": "available"
    },
    {
      "leadId": "667f1f77bcf86cd799439013",
      "available": false,
      "status": "unavailable"
    }
  ],
  "processingMode": "synchronous"
}
For larger batches, Tuco automatically offloads work to a background job and responds with: 
{
  "success": true,
  "message": "Bulk availability check started in background",
  "jobId": "bulk-availability-2025-10-15T14:30:00.000Z",
  "checked": 1200,
  "processingMode": "background"
}
You can safely trigger this endpoint from your backend and then rely on the updated availabilityStatus field on each lead for downstream decisions (for example, whether to enroll a lead in an iMessage campaign or to prefer SMS/email).