{"uid":"cap_1ED0nWSwee-a8cl39gQcL","slug":"httpay-xyz-sendgrid-email-delivery-gateway-884477d2","name":"httpay.xyz SendGrid Email Delivery Gateway","description":"API Gateway: SendGrid email delivery API","url":"https://httpay.xyz/api/gateway/sendgrid/v3/mail/send","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","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_iyeFXvywx-m_sU7NJUU_p","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Proxies the SendGrid v3 mail/send API to deliver transactional and marketing emails, with per-call micropayment billing via x402.","exampleAgentPrompt":"Send a transactional email via SendGrid from noreply@myapp.com to user@example.com with the subject 'Your order has shipped' and the HTML body '<p>Your package is on its way! Track it at example.com/track.</p>'.","exampleUseCases":null,"resultDescription":"Returns a SendGrid API response with HTTP 202 Accepted on success and a message ID, or an error object describing delivery failures, invalid addresses, or authentication issues.","failureModes":["Invalid or missing recipient/sender email addresses (400 Bad Request)","Malformed request body missing required fields like 'personalizations' or 'subject' (400)","Rate limiting by the underlying SendGrid API (429 Too Many Requests)","SendGrid authentication failure due to misconfigured gateway credentials (401/403)","Payment failure or insufficient USDC balance for x402 micropayment (402)","Recipient domain or address flagged/bounced by SendGrid (delivery failure reported asynchronously)"],"whenToPreferThis":"Choose this endpoint when you need to send email via the SendGrid v3 API without managing your own SendGrid API key or account, and you want per-call micropayment billing via the x402 protocol. Ideal for AI agents or serverless workflows that need to send transactional emails on demand with minimal setup.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T12:45:36.489Z","isFirstParty":false}