Email authentication DNS audit for a domain or email address
Email authentication DNS audit for a domain or email address: SPF with recursive 10-lookup count and all qualifier, DMARC policy, pct and report addresses, DKIM selector probe, MTA-STS with policy file, TLS-RPT, BIMI and MX. Useful for deliverability checks, Google/Yahoo bulk-sender readiness and spoofing risk. Returns grade A-F, score, spoofable flag, parsed records and plain-language issues. Errors: 400 invalid domain, 404 NXDOMAIN.
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://agent-utils-x402-production.revenue-agent-jw.workers.dev/v1/dns/email-auth
| Category | Code and developer |
|---|---|
| Provider host | agent-utils-x402-production.revenue-agent-jw.workers.dev |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 0 from 0 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-11-04 | valid payment request | 402 | $0.002 | 54 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"domain": "paypal.com"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"domain": {
"description": "domain or email address, e.g. paypal.com",
"type": "string"
},
"selectors": {
"description": "optional comma-separated DKIM selectors to probe (max 12); default probes 12 common ones",
"type": "string"
}
},
"required": [
"domain"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}