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Swift Bot Labs DNS MX Record Lookup
x402
Swift Bot Labs DNS MX Record Lookup is a paid API for AI agents from x402-toolbox.swiftbotlab.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-31).
Looks up MX (mail exchanger) DNS records for a domain and returns mail server hosts, priorities, TTLs, inferred email provider, and whether the domain accepts email.
Price / call$0.005
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
Returns a JSON object with the domain queried, an array of MX records (each with host, priority, and TTL), a boolean indicating whether the domain accepts mail, a boolean for null MX, and an inferred human-readable email provider name (e.g. 'Google Workspace', 'Microsoft 365').
Example use cases
Email provider identification for outreach
“What email provider does acmecorp.com use? Look up their MX records and tell me if it's Google Workspace, Microsoft 365, or something else.”
Pre-send deliverability check
“Before I send a batch of emails, can you check if stripe.com has valid MX records set up and actually accepts incoming mail?”
Null MX detection for bounce prevention
“Check the MX records for noreply-domain.io — I want to know if it has a null MX record meaning it intentionally rejects email, so I can skip it from my mailing list.”
Technical details
Endpoint
GEThttps://x402-toolbox.swiftbotlab.workers.dev/v1/dns/mx?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a lightweight, no-auth, pay-per-call MX record lookup with automatic email provider detection and null MX identification — ideal for agents doing email validation, lead enrichment, or deliverability checks without setting up a full DNS library or managing API keys. Prefer it over general DNS tools when the specific goal is understanding email routing for a domain.
Side effects
- Domain does not exist — returns empty MX array or DNS NXDOMAIN error
- Domain has no MX records configured — acceptsMail will be false
- Transient DNS resolution failure — may return error or empty result
- Invalid domain format in query parameter — likely returns validation error
- Network timeout on DNS upstream — may result in delayed or failed response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"tool": "dns-mx",
"result": {
"mx": [
{
"ttl": 3600,
"host": "aspmx.l.google.com",
"priority": 1
}
],
"domain": "github.com",
"nullMx": false,
"provider": "Google Workspace",
"acceptsMail": true
}
}
}Tags
x402
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