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Delx Commerce — DNS DKIM Selector Check
x402
Delx Commerce — DNS DKIM Selector 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).
Checks whether a given DKIM selector exists and has a valid shape in DNS for a specified domain
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 JSON object containing the fully-qualified lookup name (e.g. 'mail2026._domainkey.example.com'), a boolean indicating whether the DKIM record shape is valid, a pass/fail status, and a verifiable evidence block including a SHA-256 hash of the input and a flag confirming no data was retained.
Example use cases
Email deliverability pre-flight check
“Before we send our campaign, can you verify that the DKIM selector 'newsletter' is correctly published in DNS for ourdomain.com so we know email signing is working?”
Debugging bounced or rejected emails
“Our emails from acme.com are failing DKIM authentication — can you look up whether the selector 'google' is actually present and valid in DNS for acme.com?”
Post-migration DNS health verification
“We just migrated our email infrastructure — can you confirm the DKIM selector 'smtp2024' is still live and well-formed in DNS for newdomain.io?”
Technical details
Endpoint
POSThttps://commerce.delx.ai/api/v1/x402/dns-dkim-selector-check?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a lightweight, pay-per-call, no-signup DKIM selector DNS check with cryptographic evidence of the result and a guarantee of no data retention. Prefer it over running your own DNS lookup when you need verifiable, auditable results for compliance or debugging purposes, especially within an automated agent workflow on Base or Solana via x402 payments.
Side effects
- Domain or selector not found in DNS returns a failed status with shape_valid false
- Malformed domain or selector input may cause validation error
- DNS lookup timeout could result in an error response
- Non-existent DKIM selector returns lookup name but shape_valid false
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| domain | string | Domain supplied to DNS DKIM Selector Check; used only for this bounded calculation and processed in memory without retention. |
| selector | string | Selector supplied to DNS DKIM Selector Check; used only for this bounded calculation and processed in memory without retention. |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {
"lookup_name": "mail2026._domainkey.example.com",
"shape_valid": true
},
"schema": "delx/util-dns-dkim-selector-check/v1",
"status": "pass",
"evidence": {
"retained": false,
"input_sha256": "2ed271ad81bc9b1f625cc07ddea8ac977772c863beecee8294f8e92984db609a",
"external_calls": 0
},
"operation": "web_reliability:dns_dkim_selector_check"
}
}Tags
x402
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