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dkim-selector-sendgrid
x402
dkim-selector-sendgrid is a paid API for AI agents from dns.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-22).
Looks up and parses the DKIM public key for the 'sendgrid' selector of a given domain, confirming email signing validity via Cloudflare DoH.
Price / call$0.01
Success—
StatusUnknown
How this service works
DKIM public key for selector "sendgrid" of a domain: looks up sendgrid._domainkey.<domain> (TXT, Cloudflare DoH) and parses v=, k=, key type, public-key length, testing flag and whether the key is revoked (empty p=). Confirms that mail signed with the sendgrid selector will verify. $0.01 per lookup.
Output
Returns parsed details of the sendgrid._domainkey.<domain> TXT record including: DKIM version (v=), key type (k=), public key, public-key bit length, whether the testing flag is set, and whether the key is revoked (empty p= field). Confirms overall whether email signed with the sendgrid selector will verify correctly.
Example use cases
Verify SendGrid email auth before campaign
“We're about to send a big email campaign through SendGrid for acme.com — can you check if the sendgrid DKIM selector TXT record is properly configured and not revoked?”
Debug email deliverability issue
“Emails sent via SendGrid from mybusiness.io keep landing in spam — can you look up the sendgrid._domainkey TXT record for mybusiness.io and tell me if the DKIM key is valid, what the key length is, and whether it has the testing flag set?”
Audit new client domain setup
“I just onboarded a client at clientbrand.net using SendGrid — please check their sendgrid DKIM selector to make sure the public key is present, not empty, and looks correct before we go live.”
Technical details
Endpoint
GEThttps://dns.intel.rallylive.ca/dns/dkim/sendgrid?utm_source=zero.xyzWhen to prefer
Use this endpoint when you specifically need to check the SendGrid DKIM selector for a domain, as opposed to other selectors (e.g. namecheap, google). It is ideal for verifying SendGrid email deliverability configuration, auditing domain DNS before launching campaigns, or diagnosing DKIM-related email authentication failures for domains using SendGrid as their email service provider.
Side effects
- Domain not found or does not exist — DNS NXDOMAIN response
- No sendgrid._domainkey TXT record present for the domain — record missing
- Empty p= field indicating a revoked/disabled DKIM key
- Malformed TXT record that cannot be parsed as a valid DKIM record
- DNS resolution failure via Cloudflare DoH — upstream timeout or error
- Payment not completed — x402 payment required before result is returned
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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