{"uid":"cap_R2MAoDn5TowuHYLnSNRxE","slug":"x402-toolbox-strong-username-validation-c2440184","name":"x402-toolbox Strong Username Validation","description":"309 deterministic pay-per-call tools for AI agents over x402 (USDC, Base). No signup, no API key: the payment is the identity.","url":"https://x402-toolbox.shablony-pro.workers.dev/validation/strong-username-check?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"schema":{"type":"string"}}},"responseSchema":{"type":"json","example":{"ok":true,"paid":true}},"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_4Pez0PD91UIFP5RrnYr4V","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 whether a given username string meets strong username requirements (format, length, character rules)","exampleAgentPrompt":"Check whether the username 'CoolDev_42' passes strong username validation rules — I want to make sure it's acceptable before I register the account.","exampleUseCases":[{"title":"Pre-registration username check","prompt":"Before I create the account, can you verify that 'shadow_runner99' is a valid strong username? I want to make sure it won't be rejected."},{"title":"User-facing form validation","prompt":"A user typed 'j!' as their username in my signup form — does that pass strong username validation rules?"},{"title":"Bulk onboarding username policy","prompt":"I'm migrating users and need to check if the username 'Alice.Wonderland2024' meets strong username requirements before importing it."}],"resultDescription":"Returns a JSON object with an 'ok' boolean indicating whether the username passed strong validation, and a 'paid' boolean confirming the x402 micropayment was processed. May include additional validation detail fields.","failureModes":["Missing or empty schema/username parameter returns an error or false ok","Malformed input string may return validation failure","Payment failure (insufficient USDC balance) blocks the call entirely","Network timeout on the Cloudflare Worker edge node"],"whenToPreferThis":"Choose this endpoint when you need a lightweight, no-signup, pay-per-call username strength check via x402 micropayment on Base/USDC, especially when building autonomous agent workflows that must avoid OAuth or API-key management overhead. Prefer over bespoke regex solutions when you want a deterministic, hosted validation rule enforced consistently.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T06:49:57.455Z","isFirstParty":false,"canonicalSlug":"x402-toolbox-strong-username-validation-c2440184"}