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Delx Commerce — Email MX Readiness Check
x402
Delx Commerce — Email MX Readiness Check is a paid API for AI agents from commerce.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-01).
Validates whether a set of DNS MX records indicate that a domain is ready and able to receive email.
Price / call$0.001
Success—
StatusUnknown
How this service works
Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.
Output
Returns a readiness boolean, a list of usable MX records with exchange hostnames and priorities, a pass/fail status, and an evidence block containing an SHA-256 hash of the input, a flag confirming no data retention, and a count of external calls made — all under the delx/util-email-mx-readiness-check/v1 schema.
Example use cases
Pre-send deliverability validation
“Before I send this campaign, check whether these MX records from my recipient list domains indicate that email will actually be delivered: [{"exchange": "mail.example.com", "priority": 5}, {"exchange": "mail2.example.com", "priority": 10}].”
New user email verification
“A new user just signed up with a company email — can you check these MX records to confirm their domain is set up to receive email before I try to send a welcome message: [{"exchange": "mx.newuser-corp.com", "priority": 10}]?”
Email infrastructure audit
“I'm auditing the email infrastructure for a batch of domains we manage — run an MX readiness check on these records and tell me which ones are actually usable: [{"exchange": "mx1.clientdomain.com", "priority": 10}, {"exchange": "mx2.clientdomain.com", "priority": 20}].”
Technical details
Endpoint
POSThttps://commerce.delx.ai/api/v1/x402/email-mx-readiness-check?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a lightweight, pay-per-call, no-signup validation of MX record readiness — especially in agentic pipelines where verifiable, tamper-evident evidence (input hash, no-retention flag) matters. It is preferable over full SMTP probing tools when you already have MX records and want a fast, in-memory check without external DNS lookups or persistent data storage.
Side effects
- Empty or malformed records array returns a failed readiness check with no usable records
- Records exceeding 256 items may be rejected or truncated
- Invalid record object structure may cause parsing errors
- Network or service unavailability returns a non-200 response
- Payment failure via x402 protocol prevents the call from completing
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| records | array | Records supplied to Email MX Readiness Check; used only for this bounded calculation and processed in memory without retention. |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {
"ready": true,
"usable_records": [
{
"exchange": "mx.example.com",
"priority": 10
}
]
},
"schema": "delx/util-email-mx-readiness-check/v1",
"status": "pass",
"evidence": {
"retained": false,
"input_sha256": "2f2f55bbb9bea419341f4467faeb92d47276b73be2a24e15557a35a2e9286b7e",
"external_calls": 0
},
"operation": "web_reliability:email_mx_readiness_check"
}
}Tags
x402
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