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DNS DKIM Selector Check
x402
DNS DKIM Selector Check is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).
Validates DKIM selector and signing-domain label shapes for a DNS DKIM lookup without external provider calls, returning a deterministic pass/advisory status as versioned JSON.
Price / call$0.001
Success—
StatusUnknown
How this service works
DNS DKIM Selector Check: DNS DKIM Selector Check checks selector and signing-domain label shapes for a DKIM lookup from bounded caller-supplied values without an external provider. Call DNS DKIM Selector Check before accepting, caching, redirecting, or retrying a caller-supplied web response. Returns normalized web evidence, the computed finding, and an explicit pass or advisory status for DNS DKIM Selector Check as versioned deterministic JSON. Price: $0.001 USDC via x402 on Base. First-party,…
Output
Returns versioned deterministic JSON containing normalized web evidence, the computed finding (label shape validation result), and an explicit pass or advisory status for the DKIM selector and domain combination. No external DNS queries are made; evaluation is purely based on the shape and format of the supplied values.
Example use cases
Pre-send DKIM validation for email pipeline
“Before we queue this outbound email, validate that the DKIM selector 's1' is well-formed for the domain 'mycompany.com' so we don't cache a bad DNS response.”
Email deliverability pre-flight check
“I'm setting up email for 'newsletter.io' — can you verify that the DKIM selector 'mail2024' has a valid label shape for that domain before I redirect any traffic?”
Automated DKIM config audit
“Check whether the selector 'dkim1' is valid for the domain 'transactional.startup.io' and give me the finding — I need to confirm the configuration before retrying the DNS lookup.”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/dns-dkim-selector-checkWhen to prefer
Prefer this endpoint when you need a fast, deterministic, first-party check of DKIM selector and domain label shapes before committing to a DNS lookup, caching a response, or retrying a failed query. It makes no external network calls, so it is safe to call in latency-sensitive pipelines. Use it as a pre-flight guard rather than a full DNS resolution service.
Side effects
- Malformed domain string exceeding maxLength returns validation error
- Malformed selector string exceeding maxLength returns validation error
- Missing required fields returns schema error
- Advisory status returned when selector or domain label shapes fail format checks
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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