Legacy OTP send alias

Compatibility alias for instant OTP send.

POST/api/v1/otp/send

Auth: Same as /api/v1/instant-otp/send

Legacy alias. Prefer /api/v1/instant-otp/send for new integrations.

Required headers

Header	Required	Value	Description
Authorization	Yes	Bearer <token>	API key, server OTP key, or public OTP token depending on endpoint.
Content-Type	Yes	application/json	All POST requests expect JSON payloads.

Request body

Field	Type	Required	Description
email	string	Yes	Target email.
expiresInSeconds	number	No	Expiry in seconds.
otpDigits	number	No	OTP length.

Code examples (all supported languages)

Snippets use placeholder tokens. Replace them with real credentials from your dashboard.

curl -X POST "https://risumail.risu.in/api/v1/otp/send" \
  -H "Authorization: Bearer risu_otp_PUBLIC_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"email":"user@example.com","expiresInSeconds":600}'

Response schema

Canonical schema inferred from the documented success payload. Copy this block when generating typed clients.

{
  "type": "object",
  "required": [
    "success",
    "data"
  ],
  "properties": {
    "success": {
      "type": "boolean"
    },
    "data": {
      "type": "object",
      "required": [
        "sessionId",
        "expiresAt",
        "sent"
      ],
      "properties": {
        "sessionId": {
          "type": "string"
        },
        "expiresAt": {
          "type": "string"
        },
        "sent": {
          "type": "boolean"
        }
      }
    }
  }
}

Success response example

{
  "success": true,
  "data": {
    "sessionId": "otp_sess_01J...",
    "expiresAt": "2026-04-19T11:50:00.000Z",
    "sent": true
  }
}

Common error cases

Status	Code	When
403	OTP_PUBLIC_IP_NOT_ALLOWED	Public token allowlist denied.
429	OTP_RATE_LIMITED	OTP rate limit exceeded.

Implementation notes

Legacy alias only. Prefer /api/v1/instant-otp/send in new integrations.

Back to API reference index Error handling playbook