{"uid":"cap_oyB9KlPkGEVwna36FdTRz","slug":"sms-validator-api-e7647c58","name":"SMS Validator API","description":"Validate if a phone number can receive SMS","url":"https://sms-validator.api.klymax402.com/api/validate","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"phone":{"type":"string","description":"Phone number with country code (e.g. +14155551234)"},"countryCode":{"type":"string","description":"ISO 3166-1 alpha-2 country code hint (e.g. US, FR, GB)"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_sZdZzkNqQTzXQLxW3_Hdd","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates whether a given phone number is capable of receiving SMS messages","exampleAgentPrompt":"Before I send the onboarding text, can you check if +14155551234 is actually capable of receiving SMS messages — it's a US number?","exampleUseCases":null,"resultDescription":"A validation response indicating whether the provided phone number can receive SMS messages, likely including a boolean result indicating deliverability capability and possibly metadata about the number type (mobile vs landline) or carrier information.","failureModes":["Invalid phone number format returns an error","Missing country code may produce ambiguous results for numbers without a clear prefix","Unsupported country or region may return unknown/unresolvable status","Rate limiting or quota exceeded returns 429 error","Malformed request with non-E.164 phone number format fails validation"],"whenToPreferThis":"Use this endpoint when you need to verify SMS deliverability before sending text messages, building a user database with phone contacts, or filtering out landlines and non-SMS-capable numbers from a contact list. Ideal for pre-send validation in messaging workflows to reduce bounce rates.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T12:33:50.979Z","isFirstParty":false}