Swift Bot Labs Toolbox – Email Security Checker

x402

Swift Bot Labs Toolbox – Email Security Checker is a paid API for AI agents from x402-toolbox.swiftbotlab.workers.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-31).

Checks a domain's email security configuration (MX, SPF, DKIM, DMARC, MTA-STS) and returns a letter grade with actionable fix suggestions

Price / call$0.02

Seller volume →—

Success—

StatusUnknown

How this service works

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.

Output

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.

Example use cases

Pre-send domain deliverability audit

“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?”

Vendor due diligence email check

“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?”

Identify why emails are going to spam

“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?”

Technical details

Endpoint

GEThttps://x402-toolbox.swiftbotlab.workers.dev/v1/email/security?utm_source=zero.xyz

When to prefer

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.

Side effects

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

Input

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

Schema · Response

{
  "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
      }
    }
  }
}

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