{"uid":"cap_BE5YrJQDd6ElWBH7X8G1R","slug":"swift-bot-labs-toolbox-email-security-checker-a9b29c18","name":"Swift Bot Labs Toolbox – Email Security Checker","description":"62 small, deterministic utility APIs (DNS and e-mail checks, web extraction, EVM decoding, x402 checks, IP math, JSON/CSV, hashing, conversions). No account or API key: pay per call in USDC with x402.","url":"https://x402-toolbox.swiftbotlab.workers.dev/v1/email/security?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","HEAD"],"type":"string"},"headers":{"type":"object","additionalProperties":{"type":"string"}},"queryParams":{"type":"object","required":["domain"],"properties":{"domain":{"type":"string"},"dkimSelectors":{"type":"string","description":"Optional comma-separated extra DKIM selectors to check (max 5)"}},"additionalProperties":false},"discoverable":{"type":"boolean"}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"ok":true,"tool":"email-security","result":{"mx":{"provider":"Google Workspace"},"spf":{"found":true,"policy":"softfail"},"dkim":{"found":["google"]},"dmarc":{"found":true,"policy":"reject"},"fixes":["Publish an MTA-STS policy"],"grade":"B","score":85,"domain":"github.com","mtaSts":{"found":false}}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","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":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_Is6pDqzSMPJ0603LfCyEi","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Checks a domain's email security configuration (MX, SPF, DKIM, DMARC, MTA-STS) and returns a letter grade with actionable fix suggestions","exampleAgentPrompt":"Can you run an email security audit on github.com and tell me the grade, whether SPF, DKIM, and DMARC are all properly set up, and what I should fix?","exampleUseCases":[{"title":"Pre-send domain deliverability audit","prompt":"Before we launch our email campaign, can you check the email security posture of acmecorp.com — I need to know if SPF, DKIM, and DMARC are configured correctly and what the overall grade is?"},{"title":"Vendor due diligence email check","prompt":"I'm vetting a new supplier at supplierco.io — can you check their email security setup so I know if their domain is properly protected against spoofing and phishing?"},{"title":"Identify why emails are going to spam","prompt":"Emails from ourdomain.net keep landing in spam — can you audit the email security records for ourdomain.net and tell me exactly what's misconfigured or missing, like SPF softfail or no DMARC policy?"}],"resultDescription":"A JSON object containing: MX provider name, SPF record presence and policy (e.g. softfail/reject), DKIM selectors found, DMARC policy and presence, MTA-STS status, an overall letter grade (A–F), a numeric score (0–100), and an array of specific fix recommendations.","failureModes":["Domain does not exist or has no DNS records — returns error or empty results","Invalid domain format in query parameter","DKIM selectors limit exceeded (max 5 extra selectors)","Transient DNS resolution failure returning incomplete results","Payment failure via x402 protocol resulting in 402 response"],"whenToPreferThis":"Choose this endpoint when you need a fast, no-account, pay-per-call DNS-level email security audit covering MX, SPF, DKIM, DMARC, and MTA-STS in a single call. It returns a structured grade and actionable fixes, making it ideal for agent workflows that need to programmatically assess or compare email security posture across many domains without setting up an account or API key.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-31T18:40:49.075Z","isFirstParty":false,"canonicalSlug":"swift-bot-labs-toolbox-email-security-checker-a9b29c18"}