# 54ch10 Domain WHOIS & Reputation Brief

> 54ch10 Domain WHOIS & Reputation Brief is a paid API for AI agents from 54ch10.uk, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).

Returns a pre-interaction reputation brief for a domain, including age, registrar, and risk signals like phishing or scam indicators.

## Facts

- Endpoint: GET https://54ch10.uk/v1/whois
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/54ch10-domain-whois-reputation-brief-43d82736
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_XOttTBxkbMwLDtIBxeMzK

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 54ch10-domain-whois-reputation-brief-43d82736
```

Example prompt: Before I connect my wallet to uniswap-airdrop-claim.io, can you run a 54ch10 pre-interact brief on that domain to check its age, registrar, and whether it looks like a phishing or scam site?

## When to prefer this

Choose this endpoint when you need a quick, structured pre-interaction reputation brief for a domain before a user clicks a link, connects a wallet, or approves a crypto transaction. It is especially well-suited for web3 and DeFi safety workflows where phishing domains, honeypots, and scam sites are common threats. Prefer this over generic WHOIS tools when you need risk-oriented output (not just registration data) in a machine-readable format suitable for automated agent decision-making.

## Known failure modes

- Domain not found or unregistered — may return registered: false with limited data
- Invalid or malformed domain string — likely 400 or error in ok field
- Payment not included or insufficient — 402 response required for x402 protocol
- Rate limiting or service unavailability — 5xx responses possible
- Domain is very new with no history — age_days near zero, limited signals

## How this service works

54ch10: pre-interact URL check. Paste a link, get brief + domain + page. Taste /v1/open/free. 80 calls for $1. Wire in 30s. Analytics-only tooling. Not financial advice.

## Output

Returns a JSON object with fields: ok (boolean), tier, domain, age_days (integer days since registration), registrar name, registered (boolean), and a disclaimer. Higher-level risk signals such as phishing, scam, or honeypot flags may be included depending on service tier.

## 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",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "headers": {
     "type": "object",
     "additionalProperties": {
      "type": "string"
     }
    },
    "queryParams": {
     "type": "object",
     "required": [
      "domain"
     ],
     "properties": {
      "domain": {
       "type": "string",
       "description": "Domain name"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "tier": "x402",
  "domain": "example.com",
  "age_days": 11300,
  "registrar": "Example Registrar, Inc.",
  "disclaimer": "Informational tooling only. Not financial advice. No custody, trading, or token promotion. Scores are imperfect heuristics — verify independently.",
  "registered": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/54ch10-domain-whois-reputation-brief-43d82736/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 54ch10.uk](https://www.zero.xyz/host/54ch10.uk/llms.txt)