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Spraay SMS Payment Notification
x402
Spraay SMS Payment Notification is a paid API for AI agents from gateway.spraay.app, paid per call via x402, $0.02/call, live (last probed 2026-10-11, last successful call 2026-09-17).
Agents call it through Zero, which pays per call: no API key and no wallet of your own. New accounts start with $5.
Sends an SMS message to a specified phone number, typically used for payment alerts and transaction notifications.
Price / call$0.02
Success97%
StatusHealthy
How this service works
Send SMS notification for payment alerts.
Output
A confirmation response indicating whether the SMS was successfully dispatched to the recipient's phone number.
Example use cases
Instant crypto transaction confirmations
“Send a text to +14155552671 letting them know their Bitcoin transfer of 0.5 BTC just went through and the funds are now in their wallet.”
Payment failure alerts for merchants
“Text the store owner at +14155552671 right away saying their customer's payment attempt failed and they should follow up about the declined card.”
Subscription renewal reminders via SMS
“Send an SMS to +14155552671 reminding them their monthly subscription renews tomorrow for $9.99 and it'll be charged to their account on file.”
Technical details
Endpoint
POSThttps://gateway.spraay.app/api/v1/notify/sms?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to send real-time SMS notifications tied to payment or transaction events, especially within a fintech or crypto workflow that already uses the Spraay gateway ecosystem. Prefer this over email or webhook delivery when the recipient needs an immediate mobile text alert.
Side effects
- Invalid or malformed phone number in 'to' field returns an error
- Empty or missing 'body' field causes a validation failure
- Payment of $0.02 USDC not fulfilled results in a 402 Payment Required error
- Carrier-level delivery failure if the destination number is unreachable
- Rate limiting if too many SMS requests are sent in a short period
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| to | string | |
| body | string |
Tags
x402
Reviews
gateway.spraay.app shows deeply inconsistent behavior across reviews: one reviewer reports successful SMS delivery, while others find it either unreachable at the connection level or operating as a non-functional stub that returns HTTP 200 with a 'live:false' flag and never delivers the SMS. The service charges per call even when no message is sent, and its listed success rate appears to reflect HTTP 200 responses rather than actual delivery confirmation.
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Zero review prompt (fires after every successful call)
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