← Protocol index
Resource / 161
healthyEmail Auth SPF/DMARC/DKIM Check.
Email authentication posture check: parses SPF, DMARC and DKIM plus MX for any domain and grades deliverability/anti-spoofing gaps (SPF +all, SPF >10 lookups, DMARC p=none, missing DKIM). Clean JSON for deliverability and security-ops automation.
Payment requirements / accepts[]
4 options
| State | Network | Scheme | Atomic amount | Asset | payTo / untrusted |
|---|---|---|---|---|---|
| active | eip155:8453 | exact | 10000 | 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 | 0x3731f5C2c1835E3aCe2AC157c4e31b1cEA0CB0e0 |
| active | eip155:137 | exact | 10000 | 0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359 | 0x3731f5C2c1835E3aCe2AC157c4e31b1cEA0CB0e0 |
| active | eip155:42161 | exact | 10000 | 0xaf88d065e77c8cC2239327C5EDb3A432268e5831 | 0x3731f5C2c1835E3aCe2AC157c4e31b1cEA0CB0e0 |
| active | solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp | exact | 10000 | EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v | ASt6xvRyQ7ntERsmcYVMdLqZvz1GEN8Fzexzq62tXrNQ |
All advertised payment options are stored. Base (`eip155:8453`) is the operational network for ranking and canaries; non-Base options remain visible for transparency.
Probe evidence
1 recent
healthy 2026-08-12 22:00:00 UTC GET · HTTP 402 · 11ms · accepts 4 · base 1 ok
Accepts snapshot
[
{
"amount": "10000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"assetTransferMethod": null,
"extra": {
"merchant": "x402Atlas",
"name": "USD Coin",
"tier": "standard",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0x3731f5C2c1835E3aCe2AC157c4e31b1cEA0CB0e0",
"paymentFlow": null,
"raw": {
"amount": "10000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"merchant": "x402Atlas",
"name": "USD Coin",
"tier": "standard",
"version": "2"
},
"maxTimeoutSeconds": 300,
"max_timeout_seconds": 300,
"network": "eip155:8453",
"payTo": "0x3731f5C2c1835E3aCe2AC157c4e31b1cEA0CB0e0",
"pay_to": "0x3731f5C2c1835E3aCe2AC157c4e31b1cEA0CB0e0",
"scheme": "exact"
},
"scheme": "exact"
},
{
"amount": "10000",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"assetTransferMethod": null,
"extra": {
"merchant": "x402Atlas",
"name": "USD Coin",
"tier": "standard",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:137",
"payTo": "0x3731f5C2c1835E3aCe2AC157c4e31b1cEA0CB0e0",
"paymentFlow": null,
"raw": {
"amount": "10000",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"merchant": "x402Atlas",
"name": "USD Coin",
"tier": "standard",
"version": "2"
},
"maxTimeoutSeconds": 300,
"max_timeout_seconds": 300,
"network": "eip155:137",
"payTo": "0x3731f5C2c1835E3aCe2AC157c4e31b1cEA0CB0e0",
"pay_to": "0x3731f5C2c1835E3aCe2AC157c4e31b1cEA0CB0e0",
"scheme": "exact"
},
"scheme": "exact"
},
{
"amount": "10000",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"assetTransferMethod": null,
"extra": {
"merchant": "x402Atlas",
"name": "USD Coin",
"tier": "standard",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:42161",
"payTo": "0x3731f5C2c1835E3aCe2AC157c4e31b1cEA0CB0e0",
"paymentFlow": null,
"raw": {
"amount": "10000",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"merchant": "x402Atlas",
"name": "USD Coin",
"tier": "standard",
"version": "2"
},
"maxTimeoutSeconds": 300,
"max_timeout_seconds": 300,
"network": "eip155:42161",
"payTo": "0x3731f5C2c1835E3aCe2AC157c4e31b1cEA0CB0e0",
"pay_to": "0x3731f5C2c1835E3aCe2AC157c4e31b1cEA0CB0e0",
"scheme": "exact"
},
"scheme": "exact"
},
{
"amount": "10000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"assetTransferMethod": null,
"extra": {
"feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F",
"merchant": "x402Atlas",
"tier": "standard"
},
"maxTimeoutSeconds": 300,
"network": "solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp",
"payTo": "ASt6xvRyQ7ntERsmcYVMdLqZvz1GEN8Fzexzq62tXrNQ",
"paymentFlow": null,
"raw": {
"amount": "10000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F",
"merchant": "x402Atlas",
"tier": "standard"
},
"maxTimeoutSeconds": 300,
"max_timeout_seconds": 300,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "ASt6xvRyQ7ntERsmcYVMdLqZvz1GEN8Fzexzq62tXrNQ",
"pay_to": "ASt6xvRyQ7ntERsmcYVMdLqZvz1GEN8Fzexzq62tXrNQ",
"scheme": "exact"
},
"scheme": "exact"
}
]
PaymentRequired raw
{
"accepts": [
{
"amount": "10000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"merchant": "x402Atlas",
"name": "USD Coin",
"tier": "standard",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0x3731f5C2c1835E3aCe2AC157c4e31b1cEA0CB0e0",
"scheme": "exact"
},
{
"amount": "10000",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"merchant": "x402Atlas",
"name": "USD Coin",
"tier": "standard",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:137",
"payTo": "0x3731f5C2c1835E3aCe2AC157c4e31b1cEA0CB0e0",
"scheme": "exact"
},
{
"amount": "10000",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"merchant": "x402Atlas",
"name": "USD Coin",
"tier": "standard",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:42161",
"payTo": "0x3731f5C2c1835E3aCe2AC157c4e31b1cEA0CB0e0",
"scheme": "exact"
},
{
"amount": "10000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F",
"merchant": "x402Atlas",
"tier": "standard"
},
"maxTimeoutSeconds": 300,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "ASt6xvRyQ7ntERsmcYVMdLqZvz1GEN8Fzexzq62tXrNQ",
"scheme": "exact"
}
],
"error": "Payment required",
"extensions": {
"bazaar": {
"category": "domain-intelligence",
"info": {
"input": {
"method": "GET",
"queryParams": {
"domain": "example.com",
"selector": "google"
},
"type": "http"
},
"output": {
"example": {
"accepts_mail": true,
"dkim": {
"checked_selectors": [
"default",
"google",
"selector1",
"selector2",
"k1",
"dkim",
"mail"
],
"found": [
{
"record": "v=DKIM1; k=rsa; p=MIGfMA0GCSq...",
"selector": "google"
}
]
},
"dmarc": {
"adkim": "s",
"aspf": "s",
"pct": 100,
"policy": "reject",
"record": "v=DMARC1; p=reject; pct=100; rua=mailto:dmarc@example.com; adkim=s; aspf=s",
"rua": [
"mailto:dmarc@example.com"
],
"ruf": [],
"subdomain_policy": ""
},
"domain": "example.com",
"mx": [
{
"host": "aspmx.l.google.com.",
"pref": 1
}
],
"queried_at": "2026-07-02T12:00:00Z",
"spf": {
"all_qualifier": "~all",
"dns_lookups": 1,
"mechanisms": [
{
"causes_dns": true,
"kind": "include",
"qualifier": "+",
"value": "_spf.google.com"
},
{
"causes_dns": false,
"kind": "all",
"qualifier": "~",
"value": ""
}
],
"record": "v=spf1 include:_spf.google.com ~all"
},
"warnings": []
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"domain": {
"description": "Domain to check — hostname only, no scheme/IP literal, no trailing dot, no localhost, no local/internal/reserved suffix (.local, .internal, .localdomain, .lan, .test)",
"maxLength": 253,
"pattern": "^[A-Za-z0-9-]{1,63}(\\.[A-Za-z0-9-]{1,63})*$",
"type": "string"
},
"selector": {
"description": "Optional DKIM selector to check authoritatively; if omitted, a common-selector list is probed",
"type": "string"
}
},
"required": [
"domain"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"accepts_mail": {
"description": "true when the domain has at least one MX record",
"type": "boolean"
},
"dkim": {
"properties": {
"checked_selectors": {
"description": "exact selectors probed",
"items": {
"type": "string"
},
"type": "array"
},
"found": {
"items": {
"properties": {
"record": {
"type": "string"
},
"selector": {
"type": "string"
}
},
"type": "object"
},
"type": "array"
}
},
"type": "object"
},
"dmarc": {
"description": "null when no DMARC record is present",
"properties": {
"adkim": {
"default": "r",
"enum": [
"r",
"s"
],
"type": "string"
},
"aspf": {
"default": "r",
"enum": [
"r",
"s"
],
"type": "string"
},
"pct": {
"default": 100,
"maximum": 100,
"minimum": 0,
"type": "integer"
},
"policy": {
"description": "p= tag; empty when missing/invalid",
"enum": [
"none",
"quarantine",
"reject",
""
],
"type": "string"
},
"record": {
"type": "string"
},
"rua": {
"description": "aggregate report addresses",
"items": {
"type": "string"
},
"type": "array"
},
"ruf": {
"description": "forensic report addresses",
"items": {
"type": "string"
},
"type": "array"
},
"subdomain_policy": {
"description": "sp= tag; empty when absent (inherits policy)",
"type": "string"
}
},
"type": [
"object",
"null"
]
},
"domain": {
"type": "string"
},
"mx": {
"items": {
"properties": {
"host": {
"type": "string"
},
"pref": {
"maximum": 65535,
"minimum": 0,
"type": "integer"
}
},
"type": "object"
},
"type": "array"
},
"queried_at": {
"format": "date-time",
"type": "string"
},
"spf": {
"description": "null when no SPF record is present",
"properties": {
"all_qualifier": {
"description": "qualifier on the all mechanism; empty when absent",
"enum": [
"-all",
"~all",
"?all",
"+all",
""
],
"type": "string"
},
"dns_lookups": {
"description": "count of lookup-causing terms; RFC 7208 limit is 10",
"minimum": 0,
"type": "integer"
},
"mechanisms": {
"items": {
"properties": {
"causes_dns": {
"type": "boolean"
},
"kind": {
"enum": [
"include",
"a",
"mx",
"ip4",
"ip6",
"all",
"exists",
"ptr",
"redirect",
"exp",
"unknown"
],
"type": "string"
},
"qualifier": {
"enum": [
"+",
"-",
"~",
"?"
],
"type": "string"
},
"value": {
"type": "string"
}
},
"type": "object"
},
"type": "array"
},
"record": {
"type": "string"
}
},
"type": [
"object",
"null"
]
},
"warnings": {
"description": "human-readable posture advisories; never null",
"items": {
"type": "string"
},
"type": "array"
}
},
"required": [
"domain",
"queried_at",
"accepts_mail",
"mx",
"spf",
"dmarc",
"dkim",
"warnings"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
},
"tags": [
"email",
"spf",
"dmarc",
"dkim",
"deliverability",
"security"
]
}
},
"resource": {
"description": "Email authentication posture check: parses SPF, DMARC and DKIM plus MX for any domain and grades deliverability/anti-spoofing gaps (SPF +all, SPF >10 lookups, DMARC p=none, missing DKIM). Clean JSON for deliverability and security-ops automation.",
"mimeType": "application/json",
"serviceName": "Email Auth SPF/DMARC/DKIM Check",
"tags": [
"email",
"spf",
"dmarc",
"dkim",
"deliverability",
"security"
],
"url": "https://email-auth.use.x402atlas.com/check"
},
"x402Version": 2
}
Response headers
{
"alt-svc": "h3=\":443\"; ma=2592000",
"content-length": "2131",
"content-type": "application/json",
"date": "Wed, 12 Aug 2026 22:00:00 GMT",
"payment-required": "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",
"via": "1.1 Caddy",
"x-request-id": "f2f1850a-f42e-4843-bf0b-6ada172f1e87"
}
Response body
{
"accepts": [
{
"amount": "10000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"merchant": "x402Atlas",
"name": "USD Coin",
"tier": "standard",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0x3731f5C2c1835E3aCe2AC157c4e31b1cEA0CB0e0",
"scheme": "exact"
},
{
"amount": "10000",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"merchant": "x402Atlas",
"name": "USD Coin",
"tier": "standard",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:137",
"payTo": "0x3731f5C2c1835E3aCe2AC157c4e31b1cEA0CB0e0",
"scheme": "exact"
},
{
"amount": "10000",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"merchant": "x402Atlas",
"name": "USD Coin",
"tier": "standard",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:42161",
"payTo": "0x3731f5C2c1835E3aCe2AC157c4e31b1cEA0CB0e0",
"scheme": "exact"
},
{
"amount": "10000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F",
"merchant": "x402Atlas",
"tier": "standard"
},
"maxTimeoutSeconds": 300,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "ASt6xvRyQ7ntERsmcYVMdLqZvz1GEN8Fzexzq62tXrNQ",
"scheme": "exact"
}
],
"contact": {
"email": "support@x402atlas.com"
},
"documentation": "https://email-auth.use.x402atlas.com/docs",
"error": "payment_required",
"hint": "This endpoint requires x402 payment. The price and payment options are in the PAYMENT-REQUIRED response header (x402 v2). Pay with an x402 client, then retry to receive the data.",
"llms": "https://email-auth.use.x402atlas.com/llms.txt",
"method": "GET",
"openapi": "https://email-auth.use.x402atlas.com/openapi.json",
"price": "$0.01 per call",
"resource": {
"description": "Email authentication posture check: parses SPF, DMARC and DKIM plus MX for any domain and grades deliverability/anti-spoofing gaps (SPF +all, SPF >10 lookups, DMARC p=none, missing DKIM). Clean JSON for deliverability and security-ops automation.",
"mimeType": "application/json",
"serviceName": "Email Auth SPF/DMARC/DKIM Check",
"tags": [
"email",
"spf",
"dmarc",
"dkim",
"deliverability",
"security"
],
"url": "https://email-auth.use.x402atlas.com/check"
},
"x402Version": 2
}
Request headers
{
"accept": "*/*",
"user-agent": "Fetch402Bot/0.1 (+https://fetch402.com/crawler; contact: crawler@fetch402.com)"
}
Machine contract
Schemas.
InputJSON
{
"method": "GET",
"queryParams": {
"domain": "example.com",
"selector": "google"
},
"type": "http"
}
OutputJSON
{
"example": {
"accepts_mail": true,
"dkim": {
"checked_selectors": [
"default",
"google",
"selector1",
"selector2",
"k1",
"dkim",
"mail"
],
"found": [
{
"record": "v=DKIM1; k=rsa; p=MIGfMA0GCSq...",
"selector": "google"
}
]
},
"dmarc": {
"adkim": "s",
"aspf": "s",
"pct": 100,
"policy": "reject",
"record": "v=DMARC1; p=reject; pct=100; rua=mailto:dmarc@example.com; adkim=s; aspf=s",
"rua": [
"mailto:dmarc@example.com"
],
"ruf": [],
"subdomain_policy": ""
},
"domain": "example.com",
"mx": [
{
"host": "aspmx.l.google.com.",
"pref": 1
}
],
"queried_at": "2026-07-02T12:00:00Z",
"spf": {
"all_qualifier": "~all",
"dns_lookups": 1,
"mechanisms": [
{
"causes_dns": true,
"kind": "include",
"qualifier": "+",
"value": "_spf.google.com"
},
{
"causes_dns": false,
"kind": "all",
"qualifier": "~",
"value": ""
}
],
"record": "v=spf1 include:_spf.google.com ~all"
},
"warnings": []
},
"type": "json"
}