{"uid":"cap_2NVUjheRMfZ6PGdT9Vu8A","slug":"agent402-uk-phone-number-e-164-validator-6963d3dd","name":"Agent402 UK Phone Number E.164 Validator","description":"Don't burn tokens on deterministic work. Go/no-go jobs first: payout preflight, text firewall (PII/secrets), budget check — then rails, calendars, finmath. x402 USDC on Base. UK + global. agent402.co.uk — not agent402.tools. $0.001–$0.002 USDC on Base. No API keys.","url":"https://agent402.co.uk/v1/validate/phone","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"phone":{"type":"string","description":"Phone number"}}},"responseSchema":{"type":"json","example":{"country_code":"44","valid_e164_format":true}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"down","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_K2VwlvgQ7zDmJM89kmqil","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates a phone number against E.164 format rules without performing any carrier or network lookup","exampleAgentPrompt":"Check whether +447911123456 is a valid E.164-format phone number — just the format check, no carrier lookup needed.","exampleUseCases":[{"title":"Form input phone validation","prompt":"Before I save this user's profile, check that the phone number +12025550178 they entered is actually a valid E.164 format — no need to look up the carrier."},{"title":"Batch onboarding data cleanup","prompt":"I have a new customer record with phone number +33612345678 — can you verify it's properly formatted in E.164 before I pass it to our CRM?"},{"title":"Pre-SMS send sanity check","prompt":"Before triggering the notification workflow, validate that +819012345678 is a correctly structured E.164 phone number so we don't send to a malformed number."}],"resultDescription":"A validation result indicating whether the submitted phone number string conforms to E.164 international format (e.g. starts with '+' followed by country code and subscriber number, correct length). No carrier, network, or reachability data is returned.","failureModes":["Phone number missing '+' prefix returns invalid","Non-numeric characters cause format failure","Number too short or too long for E.164 spec returns invalid","Missing or empty phone field returns a validation error","Malformed JSON body returns 400 error"],"whenToPreferThis":"Use this endpoint when you need a fast, cheap, format-only check that a phone number is E.164-compliant before storing or passing it downstream — ideal for form validation pipelines, data ingestion, and pre-send checks where carrier or network reachability is irrelevant and cost matters at scale.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T14:29:10.749Z","isFirstParty":false}