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Syntexa DNS MX Lookup
x402
Syntexa DNS MX Lookup is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.008/call, status unknown (last checked 2026-10-02).
Looks up MX (Mail Exchange) DNS records for a given hostname, returning each record's priority and exchange server.
Price / call$0.008
Success—
StatusUnknown
How this service works
Call when an agent needs MX records only, formatted as priority and exchange. Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/dns-mx first.
Output
Returns a list of MX records for the given hostname, each containing a numeric priority value and the fully-qualified domain name of the mail exchange server. Records are typically ordered by priority (lower = higher preference).
Example use cases
Email deliverability pre-flight check
“Before we send out the campaign, can you pull the MX records for acme-corp.com so I can confirm their mail servers are set up correctly?”
Validating a new domain's mail setup
“I just configured MX records for mynewdomain.io — can you check what priority and exchange values are showing up in DNS right now?”
Mapping competitor email infrastructure
“I need to know which mail servers handle incoming email for stripe.com — can you fetch their MX records with priorities?”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/dns-mx?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need only MX record data (priority + exchange) for a hostname in a structured format suitable for agent pipelines. Prefer the free sandbox endpoint POST /v1/sandbox/dns-mx when available; use this paid endpoint when the sandbox is unavailable or rate-limited. Avoid if you need full DNS record sets (A, AAAA, TXT, etc.) — use a more general DNS API in that case.
Side effects
- Hostname does not exist or has no MX records — returns empty list or NXDOMAIN error
- Malformed hostname (too long, invalid characters) — rejected by schema validation
- Transient DNS resolution failure — may return timeout or upstream error
- Payment failure (insufficient USDC) — request rejected before DNS query is performed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| hostname | string | Public DNS hostname such as example.com. Not a URL, not an IP literal, and not a private name. |
Tags
x402
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