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Documentation Index

Fetch the complete documentation index at: https://virtualsms.io/docs/llms.txt

Use this file to discover all available pages before exploring further.

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Base URL

https://virtualsms.io/api/v1
All requests require x-api-key header. Responses are JSON.

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Authentication

curl https://virtualsms.io/api/v1/customer/balance \
  -H "x-api-key: YOUR_API_KEY"
Each endpoint page below includes a built-in Try It panel on the right side. Enter your API key and test requests directly from the docs.

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Two API Styles

Full-featured with JSON responses, WebSocket support, and webhooks. 
https://virtualsms.io/api/v1/

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Legacy (sms-activate compatible)

Drop-in replacement for DaisySMS. Same action names, response formats, and error codes. 
https://virtualsms.io/stubs/handler_api.php

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Rate Limits

  • 60 requests/minute per API key
  • 429 status returned when exceeded

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Response Format

Success responses return JSON with the requested data. Error responses include: 
{
  "error": "insufficient_balance",
  "message": "Balance too low for this order"
}