{"uid":"cap_3VSlfNT3D0Q7ufp-i0RDs","slug":"x-402-sms-otp-number-rental-d469ff15","name":"x-402 SMS OTP Number Rental","description":"Rent a REAL mobile phone number to receive an SMS/OTP. The number is a physical SIM in a phone we run — the hardest class of number to block (not VoIP). Returns a number + a poll URL. Then read the code with /v1/sms/inbox. The only OTP-reception service payable in USDC on x402…","url":"https://api.x-402.online/v1/sms/number?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"poll":"/v1/sms/inbox?phone=…&since=…","phone":"+590690XXXXXX","carrier":"Orange","country":"GP"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.05","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":1,"rating":{"score":"0.00","successRate":"0.00","reviews":1,"stars":null,"state":"rated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_s4ChGNQBHK4cUS4eKQCF0","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Rents a real physical SIM-based mobile phone number to receive SMS/OTP messages, payable in USDC via x402 protocol","exampleAgentPrompt":"Rent me a real physical SIM mobile number so I can receive an SMS verification code — pay with USDC via x402 and give me the number and the poll URL so I can check the inbox for the OTP.","exampleUseCases":[{"title":"Automated account signup verification","prompt":"I need a real phone number — not VoIP — to receive the SMS verification code when signing up for a new service. Get me one now, pay with USDC, and tell me the number and where to poll for the incoming message."},{"title":"Crypto-native OTP reception for agent","prompt":"My agent needs to complete a two-factor authentication step and receive an OTP by SMS. Provision a physical SIM-based number I can use, paying in USDC, and return the number along with the inbox poll URL."},{"title":"Burner number for one-time verification","prompt":"Get me a temporary real mobile number to receive a one-time SMS code — I want a physical SIM number, not VoIP, so it won't get blocked. Pay the fee in USDC and give me the number plus how to check for the incoming text."}],"resultDescription":"Returns a real physical SIM-based mobile phone number and a poll URL pointing to the /v1/sms/inbox endpoint, which the caller can use to retrieve the SMS/OTP message once it arrives on that number.","failureModes":["No numbers available — pool of physical SIMs exhausted, returns error or empty response","Payment failure — USDC payment via x402 not confirmed, number not provisioned","Number expires before OTP arrives — rental window is time-limited","SMS delivery failure — sender blocks the number despite being physical SIM","Poll URL returns empty inbox if no message received yet"],"whenToPreferThis":"Choose this endpoint when you need a real, physical SIM-based mobile number to receive SMS/OTP — not a VoIP or virtual number that services commonly block. It is the only OTP-reception service payable in USDC via the x402 protocol, making it ideal for fully crypto-native agent pipelines that need to complete SMS-based verification without setting up a traditional telecom account.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":1,"lastUsedAt":"2026-08-11T19:02:19.770Z","lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T22:02:14.795Z","isFirstParty":false,"canonicalSlug":"x-402-sms-otp-number-rental-d469ff15"}