curl -X POST https://api.yourservice.com/api/v1/step1/storeskills/verify-url \
  -H "Content-Type: application/json" \
  -d '{ "url": "https://github.com/user/my-project" }'

{
  "success": true,
  "data": {
    "accessible": true,
    "message": "Link is publicly accessible"
  }
}

{
  "success": true,
  "data": {
    "accessible": false,
    "message": "Link requires login — not publicly accessible"
  }
}