# Revenue Swarm Domain RDAP Lookup

> Revenue Swarm Domain RDAP Lookup is a paid API for AI agents from eu-tender-x402-v3-production.up.railway.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-28).

Looks up domain registration details (registrar, nameservers, registration status) for a given public domain using RDAP, paid per-call via x402 USDC on Base.

## Facts

- Endpoint: GET https://eu-tender-x402-v3-production.up.railway.app/api/domain-rdap?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-28
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/revenue-swarm-domain-rdap-lookup-2aa9c65d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_j4LE7raVSDyt_vyz2v2np

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 revenue-swarm-domain-rdap-lookup-2aa9c65d
```

Example prompt: Can you look up the domain registration details for stripe.com — I want to know who the registrar is, whether it's registered, and what nameservers it uses?

## When to prefer this

Choose this endpoint when you need lightweight, pay-per-call domain registration lookups (registrar, nameservers, registration status) without committing to a subscription-based WHOIS or RDAP service. Ideal for agent workflows that need to verify or enrich a small number of domains on demand, especially when integrated with x402 micropayment infrastructure on Base.

## Known failure modes

- Domain not found or unregistered returns registered: false with minimal data
- Invalid domain format may return an error or empty result
- RDAP registry unavailable for certain TLDs may yield incomplete data
- Network timeout on the Railway-hosted service could return a 5xx error
- Payment failure via x402 will block the call before execution

## How this service works

Pay-per-call B2B sales lead and procurement intelligence plus Base wallet data for agents. Search EU tenders/RFPs or inspect a Base wallet. Payments use x402 USDC on Base.

## Output

Returns a JSON object with the queried domain name, product type (e.g. 'Domain Registration Lookup'), registrar name, a boolean indicating whether the domain is registered, and a list of nameservers associated with the domain.

## 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": [
      "domain"
     ],
     "properties": {
      "domain": {
       "type": "string",
       "description": "Public domain such as example.com"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "domain": "example.com",
  "product": "Domain Registration Lookup",
  "registrar": "Example Registrar",
  "registered": true,
  "nameservers": [
   "a.iana-servers.net"
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/revenue-swarm-domain-rdap-lookup-2aa9c65d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from eu-tender-x402-v3-production.up.railway.app](https://www.zero.xyz/host/eu-tender-x402-v3-production.up.railway.app/llms.txt)