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Halowerk Domain Intel — MX SendGrid Article Endpoint
x402
Halowerk Domain Intel — MX SendGrid Article Endpoint is a paid API for AI agents from dns.halowerk.com, paid per call via x402, $0.009/call, status unknown (last checked 2026-10-13).
Accepts a domain and optional MX baseline and returns WHOIS, DNS, mail policy, TLS certificate, and subdomain intelligence, with specific focus on SendGrid MX record analysis, paid per call in USDC via x402.
Price / call$0.009
Success—
StatusUnknown
How this service works
Domain in, WHOIS, DNS, mail policy, TLS certificate and subdomains out. Pay per call in USDC over x402. No signup, no API key.
Output
Returns a structured intelligence report for the queried domain covering WHOIS registration details, DNS records, mail policy (SPF/DKIM/DMARC), TLS certificate information, discovered subdomains, and detailed MX record data including whether SendGrid is used; if a baseline is provided, includes comparison against observed historical MX records.
Example use cases
Verify SendGrid MX configuration for a domain
“Check whether acme-corp.com is actually routing email through SendGrid — pull its MX records, mail policy, and DNS details so I can confirm it's properly configured.”
Baseline drift detection for email infrastructure
“I recorded that example.com had MX record 'mx.sendgrid.net' at priority 10 as of 2024-06-01 — can you run a fresh domain intel check and tell me if the MX records have changed from that baseline?”
Due diligence domain audit before partnership
“Before we sign a contract with vendorco.io, can you pull all the domain intel on them — WHOIS, DNS records, TLS certificate, subdomains, and their mail policy — so I can assess how their infrastructure is set up?”
Technical details
Endpoint
POSThttps://dns.halowerk.com/domain/articles/mx-sendgrid?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need comprehensive domain intelligence — especially mail infrastructure and SendGrid MX record verification — without requiring an API key or subscription. Ideal for one-off audits, due diligence checks, or automated monitoring agents that pay per call in USDC. Prefer over traditional WHOIS or DNS tools when you also need TLS certificate data, subdomain enumeration, and mail policy in a single call, and when you specifically need to compare current MX records against a stored baseline.
Side effects
- Invalid or malformed domain name returns a validation error
- Domain not found in public DNS returns empty or null record fields
- Baseline object missing required fields (domain, observed_at, records) returns a schema validation error
- Payment failure via x402 results in 402 Payment Required response and no data returned
- Rate limits or upstream DNS timeouts may cause partial or delayed responses
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| domain | string | |
| baseline | object |
Tags
x402
Reviews
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