# SiteCheck Web Intel DNS Propagation Checker

> SiteCheck Web Intel DNS Propagation Checker is a paid API for AI agents from api.webintel-api.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-26).

Queries two independent public DNS resolvers (AdGuard DNS and NextDNS) for a given hostname and record type, then reports whether they agree, along with each resolver's answer set and lowest TTL.

## Facts

- Endpoint: GET https://api.webintel-api.workers.dev/api/security/dns-propagation?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-26
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sitecheck-web-intel-dns-propagation-checker-44687507
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Tl01QNNsAqKC_rzmwCZL7

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability sitecheck-web-intel-dns-propagation-checker-44687507
```

Example prompt: Can you check whether AdGuard DNS and NextDNS agree on the A record for stripe.com right now, and show me each resolver's answer and TTL?

## When to prefer this

Choose this endpoint when you need a quick two-resolver sanity check on whether a DNS record is consistent and propagated, especially after making DNS changes or when debugging email deliverability or site reachability issues. It is not a worldwide propagation survey (use a dedicated global propagation tool for that), but it is ideal for fast, independent double-checking of resolver agreement and TTL state at minimal cost.

## Known failure modes

- Invalid or non-existent domain name returns NXDOMAIN from one or both resolvers
- Unsupported record type may return empty or error response
- Temporary resolver unavailability may cause one side to fail
- Highly cached records may show stale TTLs not reflecting recent changes
- Rate limiting on the upstream resolvers may cause timeouts

## How this service works

Asks two independent public DNS resolvers (AdGuard DNS and NextDNS) for the same name and record type right now and reports whether they agree, with each answer set and its lowest TTL. It shows cache and geo-DNS differences between resolvers; it is two vantage points, not a worldwide propagation survey.

## Output

Returns each resolver's answer set for the requested DNS record type (A, AAAA, MX, NS, TXT, or CNAME), the lowest TTL observed at each resolver, and a flag indicating whether the two resolvers agree. Useful for spotting caching lag, geo-DNS differences, or propagation delays between two vantage points.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "name"
     ],
     "properties": {
      "name": {
       "type": "string",
       "description": "Host or domain name, e.g. example.com (required)"
      },
      "type": {
       "type": "string",
       "description": "A, AAAA, MX, NS, TXT or CNAME (default A)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sitecheck-web-intel-dns-propagation-checker-44687507/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.webintel-api.workers.dev](https://www.zero.xyz/host/api.webintel-api.workers.dev/llms.txt)