{"uid":"cap_qB4lims6xNgfQ5WoMpK7g","slug":"wtsp-dev-credits-purchase-b8d6c1c2","name":"wtsp.dev Credits Purchase","description":"Look up any phone number on WhatsApp: registration, business profile, profile photo and carrier. AI agents pay per request in USDC on Base with x402. No sign-up, no API key.","url":"https://wtsp.dev/v1/credits?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","required":["amount"],"properties":{"amount":{"type":"integer","description":"Whole USDC to add, from 1 to 500. It is also the price."}}},"responseSchema":{"type":"object","required":["key","keyPrefix","added","balance"],"properties":{"key":{"type":["string","null"],"description":"The new API key, shown this once. Null when an existing key was topped up."},"added":{"type":"string","description":"USDC added by this purchase."},"balance":{"type":"string","description":"Credit on the key afterwards, in USD."},"keyPrefix":{"type":"string","description":"The key's first characters, to tell keys apart."}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"10","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","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":"$10/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"10","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"10","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_pp-38CUjV1z-xfL4D9GYp","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"10","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Purchase USDC-denominated API credits for the wtsp.dev WhatsApp lookup service, receiving a new API key or topping up an existing one","exampleAgentPrompt":"I want to start looking up WhatsApp numbers — add 50 USDC of credits to wtsp.dev so I get an API key I can use right away.","exampleUseCases":[{"title":"Bootstrap WhatsApp lookup capability","prompt":"Add 20 USDC of credits to wtsp.dev so I get a fresh API key — I need to start checking whether phone numbers are registered on WhatsApp."},{"title":"Refill depleted WhatsApp API balance","prompt":"My wtsp.dev credit balance is running low — top it up with 100 USDC so I don't hit a limit while my agent is running WhatsApp business profile checks."},{"title":"Fund agent pipeline for carrier lookups","prompt":"I'm building an agent that verifies WhatsApp registration and carrier info for leads — can you add 200 USDC to my wtsp.dev account to cover the upcoming batch?"}],"resultDescription":"Returns a newly created API key (shown only once, null if topping up an existing key), a key prefix for identification, the amount of USDC added, and the resulting credit balance on the key in USD.","failureModes":["Amount outside 1-500 range returns validation error","Payment failure via x402 results in no key or credit being issued","Duplicate payment to existing key returns null for 'key' field but updates balance","Network or blockchain confirmation delays may cause latency","Invalid USDC transaction results in no credits added"],"whenToPreferThis":"Use this endpoint when an AI agent needs to acquire or replenish API credits for the wtsp.dev WhatsApp lookup service without any prior sign-up or API key — it is the entry point for the entire service, enabling keyless, pay-per-use USDC payments on Base via x402.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-11T12:41:24.078Z","isFirstParty":false,"canonicalSlug":"wtsp-dev-credits-purchase-b8d6c1c2"}