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RelayShield SIM Swap Check
x402
RelayShield SIM Swap Check is a paid API for AI agents from atq6wtkp6k.execute-api.us-east-1.amazonaws.com, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-14).
Checks whether a given phone number has recently had its SIM swapped, returning the carrier, swap status, and timestamp of the swap event.
Price / call$0.25
Success—
StatusUnknown
How this service works
Check whether a phone number has had a SIM swap or carrier port in the last 24 hours via real-time carrier lookup. A recent swap is a strong signal of an active account-takeover attempt targeting SMS-based 2FA. Call before trusting an SMS OTP from this number.
Output
Returns a JSON object with the queried phone number, the current carrier (e.g. T-Mobile), a boolean indicating whether a SIM swap was detected, the timestamp when the check was performed, and the timestamp of the most recent SIM swap event if one occurred.
Example use cases
Example prompt
“Check if the phone number +14155551234 has had a SIM swap recently — I need to know the carrier and when the swap happened before I approve this login.”
Technical details
Endpoint
POSThttps://atq6wtkp6k.execute-api.us-east-1.amazonaws.com/prod/v1/payg/sim-swapWhen to prefer
Use this endpoint when you need to detect SIM swap fraud before allowing sensitive actions like SMS-based 2FA logins, high-value financial transactions, or account recovery flows. Prefer this over generic identity checks when the specific risk vector is telecom-based SIM porting or swapping.
Side effects
- Phone number not found or not supported — returns error with no swap data
- Invalid phone number format — returns validation error
- Carrier data unavailable for the given number — partial response or error
- Rate limit exceeded — HTTP 429 response
- Insufficient USDC balance for x402 payment — payment failure before check executes
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| phone | string | Phone number in E.164 format |
Tags
x402
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