2s DNS Lookup API

x402

2s DNS Lookup API is a paid API for AI agents from 2s.io, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).

Performs DNS record lookups for a given hostname, returning structured results including A, AAAA, MX, TXT, NS, CAA, SRV, CNAME, PTR, and SOA records via a pay-per-call REST API.

Price / call$0.001

Seller volume →—

Success—

StatusUnknown

How this service works

Resolve a hostname over public DNS and return parsed records. Query: host (required FQDN), types (comma-separated: A,AAAA,MX,TXT,NS,CAA,SRV,CNAME,PTR,SOA — default A,AAAA,MX,TXT,NS), resolver (cloudflare|google|quad9|opendns, optional). Returns one normalized JSON shape per record type with per-type error pass-through. Reserved/local TLDs (.local, .internal, .invalid, .test, localhost) are rejected. 4s per-query timeout.

Output

Returns a JSON object with an array of DNS record items matching the query, a total count, and source metadata including the resolver provider, URL, and license. Each item contains record-type-specific fields such as IP addresses, priority, and values.

Example use cases

Example prompt

“What are the MX and TXT records for github.com? Use Cloudflare as the resolver.”

Technical details

Endpoint

GEThttps://2s.io/api/dns/lookup

When to prefer

Use this endpoint when an AI agent needs programmatic, structured DNS resolution without maintaining API keys or subscriptions — ideal for one-off or infrequent DNS lookups billed per call in USDC. Prefer this over self-hosted DNS libraries when you need flexibility to switch resolvers (Cloudflare, Google, Quad9, OpenDNS) and want normalized JSON output.

Side effects

Invalid or non-existent hostname returns empty items array or error
Unsupported record type pattern returns validation error
Requested resolver is unavailable causing timeout or error
Payment not completed results in 402 response before data is returned
Rate limits or resolver outages may cause transient failures

Input

{
  "input": {
    "type": "http",
    "method": "GET",
    "queryParams": {
      "host": "example.com",
      "types": "A,MX",
      "resolver": "cloudflare"
    }
  }
}

Schema · Request body

Field	Type	Description
inputrequired	object

Output

{
  "data": {
    "ok": true,
    "items": [
      {
        "query": "example.com",
        "answers": [
          {
            "type": "A",
            "records": [
              {
                "ttl": 138,
                "address": "104.20.23.154"
              },
              {
                "ttl": 138,
                "address": "172.66.147.243"
              }
            ]
          },
          {
            "type": "MX",
            "records": [
              {
                "type": "MX",
                "exchange": "",
                "priority": 0
              }
            ]
          }
        ],
        "resolver": "1.1.1.1",
        "durationMs": 2
      }
    ],
    "total": 1,
    "source": {
      "url": "https://2s.io",
      "license": "Public DNS data",
      "provider": "Public DNS resolvers"
    }
  },
  "meta": {
    "cost": {
      "usd": 0.001,
      "tier": 0
    },
    "caller": "x402",
    "version": null,
    "endpoint": "dns.lookup",
    "settlement": {
      "txHash": "0xe8beea18b9677bd3d75246de1b09fe27f98394ff59ea6dd34e0f1a7e8c544dbe",
      "network": "eip155:8453",
      "success": true
    }
  }
}

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How this service works

Output

Technical details

Endpoint

GEThttps://2s.io/api/dns/lookup

When to prefer

Side effects

Invalid or non-existent hostname returns empty items array or error
Unsupported record type pattern returns validation error
Requested resolver is unavailable causing timeout or error
Payment not completed results in 402 response before data is returned
Rate limits or resolver outages may cause transient failures

Input

{
  "input": {
    "type": "http",
    "method": "GET",
    "queryParams": {
      "host": "example.com",
      "types": "A,MX",
      "resolver": "cloudflare"
    }
  }
}

Schema · Request body

Field	Type	Description
inputrequired	object

Output

{
  "data": {
    "ok": true,
    "items": [
      {
        "query": "example.com",
        "answers": [
          {
            "type": "A",
            "records": [
              {
                "ttl": 138,
                "address": "104.20.23.154"
              },
              {
                "ttl": 138,
                "address": "172.66.147.243"
              }
            ]
          },
          {
            "type": "MX",
            "records": [
              {
                "type": "MX",
                "exchange": "",
                "priority": 0
              }
            ]
          }
        ],
        "resolver": "1.1.1.1",
        "durationMs": 2
      }
    ],
    "total": 1,
    "source": {
      "url": "https://2s.io",
      "license": "Public DNS data",
      "provider": "Public DNS resolvers"
    }
  },
  "meta": {
    "cost": {
      "usd": 0.001,
      "tier": 0
    },
    "caller": "x402",
    "version": null,
    "endpoint": "dns.lookup",
    "settlement": {
      "txHash": "0xe8beea18b9677bd3d75246de1b09fe27f98394ff59ea6dd34e0f1a7e8c544dbe",
      "network": "eip155:8453",
      "success": true
    }
  }
}