{"uid":"cap_qJWxLozb0vig4dy5BRu2r","slug":"agent402-uk-email-syntax-validator-5dec57ce","name":"Agent402 UK Email Syntax 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/email","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"email":{"type":"string","description":"Email address"}}},"responseSchema":{"type":"json","example":{"domain":"example.com","valid_syntax":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_mCQGdpXdaRnba1BOrBefN","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 email address syntax (format only, no DNS/MX lookup) and returns the parsed domain and a boolean valid_syntax flag.","exampleAgentPrompt":"Before writing this contact to the CRM, just do a quick syntax check on their email — is 'john.doe@example.com' a valid format, and what domain does it belong to?","exampleUseCases":[{"title":"CRM write gate for leads","prompt":"I'm about to save a new lead with email 'sarah.jones@acme.org' to the CRM — can you first check if the email format is valid so we don't write garbage data?"},{"title":"Pre-outreach email format filter","prompt":"Before we kick off the email campaign, check whether 'user@bad..domain.com' is syntactically valid — I don't want to send outreach to malformed addresses."},{"title":"Form submission email sanity check","prompt":"A user just signed up with the email 'notanemail@' — can you validate the syntax and tell me the domain so I can decide whether to accept or reject the registration?"}],"resultDescription":"Returns a JSON object with two fields: 'domain' (the domain part of the email address as a string, e.g. 'example.com') and 'valid_syntax' (a boolean indicating whether the email string is syntactically well-formed). No DNS, MX, or disposable-address checks are performed.","failureModes":["Missing or empty 'email' field in request body returns an error","Non-string input for email may cause a parsing error","Payment failure (402) if x402 micropayment is not properly handled","Network timeout if the service is temporarily unavailable"],"whenToPreferThis":"Choose this endpoint when you need a fast, cheap, pure-logic email format check before a CRM write, database insert, or outreach step — and you do NOT need MX record verification or disposable-domain detection. At $0.001 per call it is ideal as a pre-filter before investing in more expensive DNS-based validation. Prefer this over LLM-based guessing or heavier validation services when format-only correctness is sufficient.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T11:26:55.195Z","isFirstParty":false}