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Delx Commerce DNS CAA Policy Check
x402
Delx Commerce DNS CAA Policy 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 certificate issuer is permitted by a domain's DNS CAA (Certification Authority Authorization) records
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 indicating whether the specified issuer is permitted (boolean) under the provided CAA records, along with the operation name, a pass/fail status, and tamper-evident evidence including an input SHA-256 hash, retained=false flag, and external_calls count — confirming in-memory-only processing with no data retention.
Example use cases
Pre-issuance CA authorization check
“Before I request an SSL cert from Sectigo, can you verify whether Sectigo is actually permitted by my domain's CAA records? Here are the records I pulled: [{"flags":0,"tag":"issue","value":"letsencrypt.org"}].”
Security audit of CAA policy
“I'm auditing our domain security — check if our CAA records correctly allow only Let's Encrypt to issue certificates. The issuer to check is letsencrypt.org and here are the records: [{"flags":0,"tag":"issue","value":"letsencrypt.org"},{"flags":0,"tag":"issuewild","value":";"}].”
Troubleshooting cert issuance failure
“Our certificate renewal just failed and I suspect a CAA mismatch. Can you check if DigiCert is permitted under this CAA policy: [{"flags":0,"tag":"issue","value":"letsencrypt.org"}] — the issuer we're trying to use is digicert.com.”
Technical details
Endpoint
POSThttps://commerce.delx.ai/api/v1/x402/dns-caa-policy-check?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a lightweight, deterministic, in-memory check of whether a specific CA is authorized under a given set of DNS CAA records — without making live DNS lookups. It is ideal for pre-issuance validation, security audits, and automated certificate pipeline checks where you already have the CAA records on hand and want a verifiable, pay-per-call result with no data retention and cryptographic evidence of the input processed.
Side effects
- Invalid or malformed CAA record objects may cause unexpected validation results
- Issuer string exceeding 8192 characters is rejected
- Records array exceeding 256 items is rejected
- Missing issuer or records fields may result in a validation error or incomplete result
- Payment failure (x402 protocol) blocks request processing
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| issuer | string | Issuer supplied to DNS Caa Policy Check; used only for this bounded calculation and processed in memory without retention. |
| records | array | Records supplied to DNS Caa Policy Check; used only for this bounded calculation and processed in memory without retention. |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {
"issuer": "letsencrypt.org",
"permitted": true
},
"schema": "delx/util-dns-caa-policy-check/v1",
"status": "pass",
"evidence": {
"retained": false,
"input_sha256": "b0ce3b06dcfb1237aa32eef6c1398ecd3e5f4811ddf5558614373560166e3b1e",
"external_calls": 0
},
"operation": "web_reliability:dns_caa_policy_check"
}
}Tags
x402
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