{"uid":"cap_JPE5O3dEjitjxDthJSt-3","slug":"phone-number-validation-normalization-bdb5cd5b","name":"Phone Number Validation & Normalization","description":"","url":"https://x402.professorsausages.com/phone-check/check","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_xN7Dh_7UcDy5NiaJPIaPv","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates and normalizes a single phone number to E.164 format, detecting its line type, region, and returning a verdict — processed entirely on-CPU with no upstream dependencies.","exampleAgentPrompt":"Can you validate the phone number +14155552671 and tell me whether it's a mobile or landline, what region it belongs to, and give me the clean E.164 format?","exampleUseCases":[{"title":"Clean up user registration contacts","prompt":"A user just signed up with the phone number '(415) 555-0198' — can you validate it, normalize it to E.164, and tell me if it's a real mobile or landline number before we save it to the database?"},{"title":"Classify leads before SMS campaign","prompt":"I have a lead who gave us the number +447911123456 — can you check if it's valid, figure out whether it's a mobile or VoIP line, and tell me what country it belongs to so I know if we should include them in our SMS campaign?"},{"title":"Flag invalid support ticket numbers","prompt":"A support ticket came in with the phone number '00 33 1 42 68 53 00' listed as the callback number — can you validate it, convert it to proper E.164 format, and let me know if it's a legitimate landline we can actually call back?"}],"resultDescription":"Returns the phone number in E.164 canonical format, the detected line type (e.g. mobile, landline, VoIP), the geographic region or country code, and a pass/fail verdict on the number's validity — all computed locally with no external API calls.","failureModes":["Invalid or unparseable phone number string returns an error or invalid verdict","Missing required input parameter returns a 400-level error","Ambiguous number without country hint may produce incorrect region detection","Malformed request schema returns validation error"],"whenToPreferThis":"Choose this endpoint when you need fast, cheap, self-contained phone number validation with no external dependency risk — ideal for form validation pipelines, user registration flows, or any scenario where you want E.164 normalization plus line-type classification in a single call at $0.002 per lookup. Prefer it over carrier-lookup APIs when you don't need live carrier data and just want structural validity and type classification.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T18:47:45.730Z","isFirstParty":false}