{"uid":"cap_rWnTjNfpwotH2YicExaIB","slug":"agentshelf-email-syntax-validator-371ac305","name":"AgentShelf Email Syntax Validator","description":"Call when an agent needs email syntax checked (no SMTP). No network. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/email-syntax first.","url":"https://agentshelf.syntexa.ch/v1/email-syntax?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"email":{"type":"string","examples":["Ada@Example.com"],"maxLength":320,"minLength":1,"description":"Email address to check and lowercase. No SMTP lookup."}}},"responseSchema":null,"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_drbOJgadK7g83wAMoNV_9","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 the syntactic correctness of an email address string without making any network or SMTP connections","exampleAgentPrompt":"Can you check whether 'john.doe@@example..com' is a valid email address — just the syntax, no need to ping any server?","exampleUseCases":[{"title":"Form input sanitization before saving","prompt":"Before I store this user-submitted email 'jane_doe+newsletter@sub.domain.co.uk' in the database, can you confirm it's syntactically valid?"},{"title":"Bulk registration error detection","prompt":"A user tried to sign up with the email 'not-an-email@' — can you tell me if that passes basic email syntax rules?"},{"title":"Automated data pipeline email check","prompt":"I have an email scraped from a web form: 'contact@company..org' — is the syntax correct or is it malformed?"}],"resultDescription":"Returns a result indicating whether the provided email address string is syntactically valid, based on format rules (RFC-compliant parsing), with no SMTP or DNS lookups performed.","failureModes":["Empty or missing email field returns validation error","Email string exceeding 320 characters rejected","Malformed request body returns 400-level error","Payment failure or insufficient USDC balance blocks the request"],"whenToPreferThis":"Choose this endpoint when you need a fast, offline, pure-syntax check of an email address with no network side effects — ideal for form validation, data pipeline sanitation, or pre-storage checks where SMTP delivery verification is unnecessary or undesirable. Prefer the free sandbox POST /v1/sandbox/email-syntax endpoint first if available to avoid the $0.001 USDC cost.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T06:47:28.731Z","isFirstParty":false,"canonicalSlug":"agentshelf-email-syntax-validator-371ac305"}