{"uid":"cap_I0B3EYXwjcc9I32FWGe9L","slug":"pennyrail-email-shape-validator-7360b77e","name":"PennyRail Email Shape Validator","description":"Machine-readable settlement service","url":"https://pennyrail.vercel.app/api/p/nano/validation.email--validate-email-shape","method":"POST","headers":{},"bodySchema":{"type":"object","required":["input"],"properties":{"input":{"type":"string"}}},"responseSchema":{"type":"object","additionalProperties":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":"unknown","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_9EwWOuJnrbr3JhApc8XP4","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 whether a given string conforms to a well-formed email address shape/format","exampleAgentPrompt":"Can you check whether 'john.doe@example.com' is a properly shaped email address before I save it to the database?","exampleUseCases":[{"title":"User registration form guard","prompt":"Before I create the account, check that 'newuser@@gmail..com' is actually a valid email shape — I want to catch bad inputs before they hit the database."},{"title":"Bulk import pre-screening","prompt":"I'm about to import a contact list — can you verify whether 'marketing@acme_corp' looks like a properly formatted email address or if it's malformed?"},{"title":"API payload pre-flight check","prompt":"We're building a sign-up flow and I need to confirm that the email field 'alice+tag@subdomain.org' passes basic email shape validation before sending it downstream."}],"resultDescription":"Returns a JSON object indicating whether the input string conforms to the expected shape/format of an email address, likely including a boolean validity flag and possibly error details or shape diagnostics.","failureModes":["Missing or empty input field returns validation error","Non-string input type may cause schema rejection","Network or payment settlement failure returns 402 or 5xx","Ambiguous edge-case addresses (e.g. internationalized domains) may produce unexpected results"],"whenToPreferThis":"Choose this endpoint when you need a lightweight, pay-per-call email shape/syntax check via a micropayment-gated API, especially in agent workflows already using x402/USDC payment rails, and where spinning up a full email verification library is overkill. Prefer alternatives that do live deliverability checks (DNS/MX lookup) if you need more than syntactic shape validation.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T06:51:52.720Z","isFirstParty":false}