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Penniless Data Utilities – DNS Lookup
x402
Penniless Data Utilities – DNS Lookup is a paid API for AI agents from penniless-json-repair.sjaman.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Performs a DNS record lookup for a given domain, returning structured answers for any record type (A, MX, TXT, etc.) via DNS over HTTPS.
Price / call$0.001
Success—
StatusUnknown
How this service works
Deterministic, dependency-free data utilities served over x402 micropayments (USDC on Base). None of these call another AI model. Keyword: JSON repair Keyword: malformed JSON Keyword: broken JSON from LLM Keyword: fix JSON output Keyword: JSON sanitizer Keyword: truncated JSON recovery Keyword: YAML to JSON Keyword: convert YAML Keyword: parse YAML config Keyword: cron next run Keyword: cron parser Keyword: when does cron run next Keyword: unified diff Keyword: line diff Keyword: text diff Keyword: HTML to text Keyword: extract links Keyword: extract emails Keyword: scrape text Keyword: whois lookup Keyword: domain registration Keyword: registrar Keyword: domain expiry date Keyword: RDAP Keyword: dns lookup Keyword: MX records Keyword: TXT records Keyword: A record Keyword: DNS over HTTPS Keyword: github repo stats Keyword: github stars Keyword: repository popularity Keyword: OSS project metadata Keyword: email validation Keyword: verify email address Keyword: check MX deliverability Keyword: email syntax Use case: repair a JSON code block wrapped in Markdown fences Use case: turn a docker-compose or CI YAML file into JSON Use case: compute the next UTC fire time of a cron expression Use case: produce a unified diff between two versions of a file Use case: strip HTML tags and pull out links, emails, and headings Use case: look up a domain's registrar, status and expiry before purchase Use case: check when a domain registration lapses Use case: resolve A, AAAA, MX, TXT or NS records for a hostname Use case: find a domain's mail servers and SPF TXT record Use case: compare GitHub repository stars, forks and activity for market research Use case: check whether an email address is well-formed and its domain accepts mail
Output
Returns a JSON object with ok (boolean), the queried domain, record type, DNS status (e.g. NOERROR, NXDOMAIN), and an array of answers each containing name, type, TTL, and data fields.
Example use cases
Email deliverability pre-check
“Before I send a bulk email campaign to addresses at acmecorp.com, can you look up their MX records to confirm they have working mail servers configured?”
SPF record verification
“Check the TXT records for stripe.com — I want to see if they have an SPF record set up and what it says.”
Domain A record resolution
“What IP address does api.github.com resolve to? Look up its A record for me.”
Technical details
Endpoint
POSThttps://penniless-json-repair.sjaman.workers.dev/dns/lookupWhen to prefer
Choose this endpoint when you need a lightweight, pay-per-query DNS lookup without managing resolver infrastructure. Ideal for agents that occasionally need DNS data without a standing DNS subscription, especially when already using x402 micropayment infrastructure. Prefer over general WHOIS or RDAP endpoints when you specifically need live DNS record data (A, MX, TXT, CNAME, etc.) rather than registrar/ownership information.
Side effects
- Domain does not exist — returns NXDOMAIN status with empty answers array
- Requested record type not found — returns NOERROR with empty answers
- Invalid domain format — may return error or empty result
- Payment failure via x402 — 402 response before DNS query is attempted
- Upstream DNS resolver timeout — request may fail or return partial results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"type": "MX",
"domain": "example.com",
"status": "NOERROR",
"answers": [
{
"ttl": 180,
"data": "0 .",
"name": "example.com",
"type": "MX"
}
]
}
}Tags
x402
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