{"uid":"cap_GzvpFVioUeXm8RSL--FO8","slug":"x402-toolbox-spf-check-b4baa882","name":"x402-toolbox SPF Check","description":"309 deterministic pay-per-call tools for AI agents over x402 (USDC, Base). No signup, no API key: the payment is the identity.","url":"https://x402-toolbox.shablony-pro.workers.dev/email/spf-check?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"schema":{"type":"string"}}},"responseSchema":{"type":"json","example":{"ok":true,"paid":true}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_fMEAuBEn0TfigUKUwzWNt","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Checks the SPF (Sender Policy Framework) DNS record for a given email domain to validate email authentication configuration","exampleAgentPrompt":"Can you check the SPF record for example.com and tell me if it's properly configured for email authentication?","exampleUseCases":[{"title":"Email deliverability debugging","prompt":"My emails from acmecorp.com keep landing in spam — can you check if the SPF record is set up correctly for that domain?"},{"title":"New domain email setup verification","prompt":"I just configured SPF for my new domain startupxyz.io — can you verify the SPF record looks correct before I send any campaigns?"},{"title":"Security audit of sender policy","prompt":"Can you pull the SPF record for competitor.com and tell me what mail servers they've authorized to send on their behalf?"}],"resultDescription":"Returns a JSON object indicating whether the SPF DNS record is present and valid for the queried domain, including the raw SPF record string and policy details such as authorized sending mechanisms and the all qualifier (pass/fail/softfail/neutral).","failureModes":["Domain has no SPF record (missing TXT record) — returns ok:false","Invalid or malformed SPF syntax — returns validation error","Domain does not exist (NXDOMAIN) — DNS lookup failure","Network timeout or DNS resolver error","Input schema missing or malformed domain parameter"],"whenToPreferThis":"Choose this endpoint when you need a lightweight, pay-per-call SPF DNS lookup with no API key or account setup required — ideal for AI agents that need to programmatically verify email sender authentication configuration on demand, especially in pipelines checking email deliverability or security posture for arbitrary domains.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T03:22:10.773Z","isFirstParty":false,"canonicalSlug":"x402-toolbox-spf-check-b4baa882"}