{"uid":"cap_8Bg9TyPQ2VaZsQsZy0nnz","slug":"whatsapp-phone-number-validator-23f1ec11","name":"WhatsApp Phone Number Validator","description":"400+ paid API endpoints. Social media, AI, crypto, finance, weather, ecommerce, tools. Pay per request with USDC on Base chain.","url":"https://kite-endpoints.vercel.app/api/whatsapp-validator","method":"POST","headers":{},"bodySchema":null,"responseSchema":{"type":"object","example":{"result":{"data":"example response"}},"properties":{"result":{"type":"object","description":"API response data"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.12","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":"$0.12/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.12","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.12","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_r_hal2E8PNeHq8wGQwfuA","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.12","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 registered and active on WhatsApp","exampleAgentPrompt":"Can you check if the phone number +1 (415) 555-0198 is registered on WhatsApp before I try to message them?","exampleUseCases":[{"title":"Pre-campaign WhatsApp list cleansing","prompt":"I have a list of customer phone numbers and want to know which ones are actually on WhatsApp before I run my marketing campaign — can you validate +44 7911 123456 to start?"},{"title":"CRM contact WhatsApp enrichment","prompt":"Before adding this lead to our WhatsApp outreach sequence, can you verify that +91 98765 43210 is a valid WhatsApp number?"},{"title":"Support team contact verification","prompt":"A customer gave us their WhatsApp number as +55 11 91234-5678 — can you confirm it's actually registered on WhatsApp so we can reach them there?"}],"resultDescription":"Returns a result object indicating whether the provided phone number is registered on WhatsApp, potentially including registration status, phone number formatting details, and validity flags.","failureModes":["Invalid phone number format returns an error or false status","Non-existent or unregistered numbers return a negative validation result","Rate limiting or quota exceeded for high-volume requests","Malformed input without proper country code may fail to parse","Service unavailability returns a 5xx error"],"whenToPreferThis":"Use this endpoint when you need to verify WhatsApp registration status of a phone number before initiating contact, cleaning contact lists, or enriching CRM records. Prefer this over manual outreach when operating at scale or automating messaging workflows.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T07:09:08.750Z","isFirstParty":false}