{"uid":"cap_y3weLGQFgBh6P6rL5H9fh","slug":"spf-authorizes-sendgrid-checker-2afb9340","name":"SPF Authorizes SendGrid Checker","description":"Does the domain's SPF record authorise sendgrid to send its mail? Reads the SPF TXT record (Cloudflare DoH) and checks for sendgrid's include/ip mechanisms, returning yes/no, the matching mechanism and the full record. Confirms a vendor integration is wired for deliverability, or spots an unexpected sender. $0.01 per lookup.","url":"https://email.intel.rallylive.ca/email/spf-authorizes/sendgrid?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_3_aWc5DUCM2xv43O4r2oY","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Checks whether a domain's SPF record authorizes SendGrid to send email on its behalf, returning yes/no, the matching mechanism, and the full SPF record.","exampleAgentPrompt":"Can you check whether example.com's SPF record authorizes SendGrid to send email for it — I want to see if SendGrid is listed and what the full SPF record looks like?","exampleUseCases":[{"title":"Verify SendGrid onboarding for new domain","prompt":"We just set up SendGrid for sending transactional emails from acme.com — can you confirm that acme.com's SPF record actually includes SendGrid so our emails won't land in spam?"},{"title":"Audit vendor email authorization","prompt":"I need to audit which email vendors are authorized by our domain newsletter.io — specifically, does our SPF record authorize SendGrid, and what's the matching mechanism?"},{"title":"Detect unauthorized SendGrid sender","prompt":"Someone claims to be sending email on behalf of partnercompany.com through SendGrid — can you check if partnercompany.com's SPF record actually authorizes SendGrid or if this looks suspicious?"}],"resultDescription":"Returns a yes/no indicating whether the domain's SPF record authorizes SendGrid, the specific SPF mechanism that matched (e.g. include:sendgrid.net), and the full raw SPF TXT record retrieved via Cloudflare DNS-over-HTTPS.","failureModes":["Domain has no SPF TXT record — returns no authorization with empty record","Domain does not exist or DNS lookup fails — DNS resolution error","SPF record exists but SendGrid is not included — returns no with the full record for inspection","Malformed SPF record that cannot be parsed — may return error or unparseable record string","Payment not received (x402) — request rejected before lookup is performed"],"whenToPreferThis":"Use this endpoint when you need a focused, single-vendor check to confirm SendGrid is authorized in a domain's SPF record — ideal for deliverability audits, vendor onboarding verification, or detecting unauthorized senders. Prefer over generic SPF parsers when the specific question is about SendGrid authorization and you want structured yes/no output with the matching mechanism highlighted.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-20T00:45:16.490Z","isFirstParty":false,"canonicalSlug":"spf-authorizes-sendgrid-checker-2afb9340"}