curl -X GET "https://api.tracklysms.com/api/v2/audiences/664f1a2b3c4d5e6f7a8b9c0d/size" \
  -H "X-Api-Key: trk_your_api_key_here"

import requests

audience_id = "664f1a2b3c4d5e6f7a8b9c0d"

response = requests.get(
    f"https://api.tracklysms.com/api/v2/audiences/{audience_id}/size",
    headers={"X-Api-Key": "trk_your_api_key_here"},
)

data = response.json()
print(f"Audience size: {data['size']} contacts (as of {data['calculated_at']})")

const audienceId = "664f1a2b3c4d5e6f7a8b9c0d";

const response = await fetch(
  `https://api.tracklysms.com/api/v2/audiences/${audienceId}/size`,
  {
    headers: { "X-Api-Key": "trk_your_api_key_here" },
  }
);

const data = await response.json();
console.log(`Audience size: ${data.size} contacts (as of ${data.calculated_at})`);

{
  "audience_id": "664f1a2b3c4d5e6f7a8b9c0d",
  "size": 12480,
  "calculated_at": "2025-11-20T10:30:45"
}

{
  "error": "Audience not found",
  "code": "not_found"
}

{
  "error": "Invalid credentials",
  "code": "invalid_credentials"
}