Authentication

Learn how request authentication works for TextPro API endpoints.

Authentication Overview

All /api endpoints require an API key passed via the X-API-KEY header.

X-API-KEY: tp_live_xxx

POST

/api/send/sms

curl -X POST https://textpro.co.uk/api/send/sms \
  -H "X-API-KEY: tp_live_xxx" \
  -H "Content-Type: application/json" \
  -d '{"to":"+447000000000","message":"Authentication test"}'

Invalid or Revoked Keys

Missing, invalid, or revoked keys return 401 Unauthorized.

401

Unauthorized

{
  "error": "Invalid API key"
}

403

Forbidden

{
  "error": "API access is temporarily blocked for this account"
}