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DKIM Default Selector DNS TXT Record Lookup
x402
DKIM Default Selector DNS TXT Record Lookup is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.008/call, status unknown (last checked 2026-10-01).
Retrieves the TXT record at default._domainkey.{hostname} to fetch the DKIM public key for the default selector of a given domain
Price / call$0.008
Success—
StatusUnknown
How this service works
Call when an agent needs TXT at default._domainkey.{hostname}. A different selector is a different DNS name. Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/dns-txt-dkim-default first.
Output
Returns the raw DNS TXT record content found at default._domainkey.{hostname}, which contains the DKIM public key and associated policy fields (e.g. v=DKIM1; k=rsa; p=...). If no record exists, an appropriate not-found or error response is returned.
Example use cases
Email deliverability audit for domain
“Check whether example.com has a valid DKIM public key published at the default selector — fetch the TXT record at default._domainkey.example.com so I can audit their email authentication setup.”
Verify DKIM before sending campaign
“Before I launch this email campaign through mailgun.com, can you pull the default DKIM TXT record for mailgun.com so I can confirm the signing key is properly published in DNS?”
Diagnose email authentication failure
“I'm getting DKIM failures for messages from newsletter.acme.io — can you fetch the DNS TXT record at default._domainkey.newsletter.acme.io so I can see what key is currently published?”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/dns-txt-dkim-default?utm_source=zero.xyzWhen to prefer
Use this endpoint when you specifically need the DKIM TXT record for the 'default' selector of a domain (i.e. querying default._domainkey.{hostname}). If you need a different DKIM selector, you must construct the correct DNS name manually and use a different lookup. Prefer the free sandbox variant (unpaid POST /v1/sandbox/dns-txt-dkim-default) for testing before committing the $0.008 USDC charge.
Side effects
- Domain does not exist — DNS NXDOMAIN response
- No TXT record at default._domainkey.{hostname} — record not found
- Hostname exceeds 253 characters or is empty — validation error
- DNS resolution timeout or network error
- Invalid hostname format causing lookup failure
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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