x402 List

x402 Protocol Service Directory

Domain Intelligence API

Data PAYMENT-READY imported

payment-ready until 2026-08-20

imported from the x402 Bazaar, not submitted by the operator · own this service? claim it · or ask to be removed

Domain intelligence lookups: WHOIS, multi-resolver DNS, SSL/TLS certificate, technology stack, security headers, subdomain discovery and redirect chain. Each check is available on its own, or combined into a single full report. Paid per call in USDC on Base or Solana.

Pay from $0.02 per request in USDC on Base / Solana, settled onchain via the x402 protocol, no signup, no API key needed.

first settlement 2026-02-20 · $195.27 all-time · settled via coinbase, dexter

BASE URL https://domain.hugen.tokyo ENDPOINTS 1 NETWORK Base / Solana ASSET USDC MEMBER SINCE 2026-07-20 MONITORED SINCE 2026-07-20

ASSESSMENT

updated 4h ago

Evidence-backed signals, not a single score. Click any chip for the proof. Measured values stay read-only; unknown is honest.

reliability 100%
uptime 24h
100%
uptime 7d
99.8%
uptime 30d
100%
uptime 90d
100%
response p95
1508ms
avg response
1113ms
total checks
2,131

Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.

compliance A (14/14)

14 of 14 x402 conformance checks pass. Full checklist below.

jump to compliance checklist

price $0.02 (p68 in Data)
price (min)
$0.02
category percentile (min)
p68 in Data
endpoints / prices
1 / 1
model
flat
stability
100%
risk clean

No deterministic risk flag. Risk fires only on an exact blocklist match, or a reserved-brand name with a mismatched verified payTo. Never from low uptime, a high price, or a model guess.

domain age
-
registrar
-
hosting
custom
domain created
---

Identity facts, not a risk score.

traction $5.84975 30d · 424 buyers
volume 30d
$5.84975
buyers 30d
424
settlements 30d
4,989
first settlement
2026-02-20
last settlement
2026-08-13
top buyer share
69% of 30d volume
trend 7d vs 30d
0.86x the 30d daily rate
networks
eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdpKuc147dw2N9d
volume all-time
$195.27
settlements all-time
73,491
median settlement 30d
$0.01
max settlement 30d
$0.50
settled via
coinbase ($54.53, 4,940 tx), dexter ($3.03, 49 tx)

Attributed pro-quota: this payout address is shared, so volume is the operator-level figure divided by the services sharing it, while buyer and transaction counts stay whole. A declared convention, not an individually observed measure, and still a conservative undercount.

Currently sharing this payout address with Content Intelligence API, Gotobi Calendar API, Hugen DeFi Intelligence API, Hugen Intel API, Hugen Visual API, Hugen Weather API, Scout Multi-Source Intelligence API, Tick Aggregator FX API, Whale Intelligence API.

Top buyer share is a concentration signal, not part of the ranking score.

WHAT IT DOES

ai-derived

Provides domain intelligence checks including WHOIS, DNS, SSL, tech stack, security headers, subdomains, and redirects.

category
domain-intelligence
in
query params
domain-analysiswhoisdnsssltech-stacksecurity-headerssubdomainsredirects

AI-generated summary. The measured data is never altered by it.

ENDPOINTS

Service endpoints with HTTP method, path, description, pricing, and network
METHOD PATH DESCRIPTION PRICE NETWORK ASSET 402 CHANNEL
GET /domain/full $0.02 Base/Solana USDC header
1 endpoints

REQUEST / RESPONSE EXAMPLE

An unpaid request to GET /domain/full returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.

// request
curl -i 'https://domain.hugen.tokyo/domain/full'
// 402 response (captured by monitor) · 1 payload · click to expand
[
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x29322Ea7EcB34aA6164cb2ddeB9CE650902E4f60",
        "amount": "20000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      },
      {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
        },
        "payTo": "4du4AfkjJEwch2zk3shkPJVZfyJHNDnNjEWC6AboaS5Z",
        "amount": "20000",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://domain.hugen.tokyo/domain/full",
      "mimeType": "application/json",
      "description": "Complete domain intelligence in one call — WHOIS, multi-resolver DNS, SSL/TLS, tech stack, security headers, subdomain discovery, redirect chain. All 7 run in parallel with individual timeouts. Partial results on component failure. Weighted overall security grade. Doing this yourself requires 7 separate tools and result aggregation. Accepts USDC payments on Base and Solana"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {
              "domain": "example.com"
            }
          },
          "output": {
            "type": "json",
            "example": {
              "dns": {
                "records": {
                  "A": [
                    "93.184.216.34"
                  ]
                }
              },
              "ssl": {
                "grade": "A"
              },
              "tech": {
                "technology_count": 5
              },
              "whois": {
                "registrar": "Cloudflare, Inc."
              },
              "headers": {
                "grade": "B"
              },
              "redirect": {
                "grade": "A"
              },
              "subdomains": {
                "subdomain_count": 3
              }
            }
          }
        },
        "tags": [
          "whois",
          "dns",
          "ssl",
          "domain"
        ],
        "schema": {
          "properties": {
            "input": {
              "required": [
                "method"
              ]
            }
          }
        },
        "category": "domain-intelligence",
        "discoverable": true
      }
    },
    "x402Version": 2
  }
]

OVER TIME

All charts use the 30d selector; each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/domain-intelligence-api/price, /scores, /volume and /buyers. On-chain volume and distinct buyers are measured over the service's settlement address and are a conservative undercount (only settlements that reach a measured facilitator are counted). The on-chain series roll up hourly, so the latest day can be up to about an hour behind; distinct buyers are counted per payout address, so a service that settles to more than one address is an upper bound.

UPTIME
07-20 · uptime 100.0% · 1115ms avg07-21 · uptime 100.0% · 1052ms avg07-22 · uptime 100.0% · 1140ms avg07-23 · uptime 100.0% · 895ms avg07-24 · uptime 100.0% · 1004ms avg07-25 · uptime 100.0% · 1049ms avg07-26 · uptime 100.0% · 1042ms avg07-27 · uptime 100.0% · 1084ms avg07-28 · uptime 100.0% · 1116ms avg07-29 · uptime 100.0% · 1095ms avg07-30 · uptime 100.0% · 1189ms avg07-31 · uptime 100.0% · 1153ms avg08-01 · uptime 100.0% · 1107ms avg08-02 · uptime 100.0% · 1053ms avg08-03 · uptime 100.0% · 1087ms avg08-04 · uptime 100.0% · 1091ms avg08-05 · uptime 100.0% · 1333ms avg08-06 · uptime 100.0% · 1085ms avg08-07 · uptime 98.9% · 1089ms avg08-08 · uptime 100.0% · 1224ms avg08-09 · uptime 100.0% · 1327ms avg08-10 · uptime 100.0% · 1200ms avg08-11 · uptime 100.0% · 1032ms avg08-12 · uptime 100.0% · 1110ms avg08-13 · uptime 100.0% · 1150ms avg07-2008-13
30d UPTIME 100%
RESPONSE TIME
07-20 · 1115ms avg07-20 · 1115ms avg07-21 · 1052ms avg07-21 · 1052ms avg07-22 · 1140ms avg07-22 · 1140ms avg07-23 · 895ms avg07-23 · 895ms avg07-24 · 1004ms avg07-24 · 1004ms avg07-25 · 1049ms avg07-25 · 1049ms avg07-26 · 1042ms avg07-26 · 1042ms avg07-27 · 1084ms avg07-27 · 1084ms avg07-28 · 1116ms avg07-28 · 1116ms avg07-29 · 1095ms avg07-29 · 1095ms avg07-30 · 1189ms avg07-30 · 1189ms avg07-31 · 1153ms avg07-31 · 1153ms avg08-01 · 1107ms avg08-01 · 1107ms avg08-02 · 1053ms avg08-02 · 1053ms avg08-03 · 1087ms avg08-03 · 1087ms avg08-04 · 1091ms avg08-04 · 1091ms avg08-05 · 1333ms avg08-05 · 1333ms avg08-06 · 1085ms avg08-06 · 1085ms avg08-07 · 1089ms avg08-07 · 1089ms avg08-08 · 1224ms avg08-08 · 1224ms avg08-09 · 1327ms avg08-09 · 1327ms avg08-10 · 1200ms avg08-10 · 1200ms avg08-11 · 1032ms avg08-11 · 1032ms avg08-12 · 1110ms avg08-12 · 1110ms avg08-13 · 1150ms avg08-13 · 1150ms avg07-2008-13
AVG RESP 1112ms
PRICE (captured 402, USD)
07-20 · $0.0208-13 · $0.02$0.0207-2008-13
SUB-SCORES (uptime + x402 compliance)
07-20 compliance: 100% checks07-21 uptime: 100.0% compliance: 100% checks07-22 uptime: 100.0% compliance: 100% checks07-23 uptime: 100.0% compliance: 100% checks07-24 uptime: 100.0% compliance: 100% checks07-25 uptime: 100.0% compliance: 100% checks07-26 uptime: 100.0% compliance: 100% checks07-27 uptime: 100.0% compliance: 100% checks07-28 uptime: 100.0% compliance: 100% checks07-29 uptime: 100.0% compliance: 100% checks07-30 uptime: 100.0% compliance: 100% checks07-31 uptime: 100.0% compliance: 100% checks08-01 uptime: 100.0% compliance: 100% checks08-02 uptime: 100.0% compliance: 100% checks08-03 uptime: 100.0% compliance: 100% checks08-04 uptime: 100.0% compliance: 100% checks08-05 uptime: 100.0% compliance: 100% checks08-06 uptime: 100.0% compliance: 100% checks08-07 uptime: 99.9% compliance: 100% checks08-08 uptime: 99.9% compliance: 100% checks08-09 uptime: 99.9% compliance: 100% checks08-10 uptime: 99.9% compliance: 100% checks08-11 uptime: 99.9% compliance: 100% checks08-12 uptime: 100.0% compliance: 100% checks08-13 uptime: 100.0% compliance: 100% checksuptimecompliance07-2008-13

checklist grew 11->14 on 2026-07-28; a step here is a metric change, not a regression

PILLARS OVER TIME (measured)

Measured site and economics pillars from the assessment history, so the latest value shown elsewhere on this page reads as a point on a trend rather than a permanent state.

VOLUME (on-chain settlement, USD)
07-15 · $307-16 · $207-17 · $207-18 · $207-19 · $207-20 · $207-21 · $207-22 · $307-23 · $407-24 · $207-25 · $207-26 · $207-27 · $207-28 · $207-29 · $207-30 · $207-31 · $208-01 · $208-02 · $208-03 · $208-04 · $208-05 · $208-06 · $108-07 · $208-08 · $108-09 · $308-10 · $208-11 · $108-12 · $208-13 · $1peak $407-1508-13

Shared payout address (9 other services). These bars are the full shared address (operator-level), so do not sum them across the services that share it. Where a per-service figure is attributed, the assessment block and the ranking, it is the address total divided pro-quota by the 10 services sharing it: a declared convention, not an individually observed measure.

DISTINCT BUYERS
07-15 · 35 buyers07-16 · 24 buyers07-17 · 27 buyers07-18 · 20 buyers07-19 · 24 buyers07-20 · 16 buyers07-21 · 28 buyers07-22 · 33 buyers07-23 · 34 buyers07-24 · 18 buyers07-25 · 28 buyers07-26 · 15 buyers07-27 · 23 buyers07-28 · 17 buyers07-29 · 32 buyers07-30 · 26 buyers07-31 · 37 buyers08-01 · 33 buyers08-02 · 19 buyers08-03 · 16 buyers08-04 · 15 buyers08-05 · 24 buyers08-06 · 11 buyers08-07 · 22 buyers08-08 · 13 buyers08-09 · 27 buyers08-10 · 23 buyers08-11 · 12 buyers08-12 · 16 buyers08-13 · 12 buyerspeak 37 buyers07-1508-13

Shared payout address (9 other services). These bars are the full shared address (operator-level), so do not sum them across the services that share it. Per-service buyer and transaction counts are shown whole (integers), not divided; only volume is attributed pro-quota. A declared convention, not an individually observed measure.

COMPLIANCE

14/14 checks pass · grade A

last 402 captured 2026-07-20 · last up 2026-08-13

  • 402 payload captured
  • accepts[] array present
  • payTo address recoverable
  • payTo at accepts[0].payTo (conformant shape)
  • payTo is a valid on-chain address
  • atomic price declared
  • atomic price in a sane range
  • asset (token) address declared
  • network resolves to CAIP-2
  • payment scheme declared
  • served over HTTPS
  • declares the current x402 version (2)
  • EIP-712 domain parameters present on every EVM entry
  • x402 v2 envelope delivered in the payment-required header

SITE PILLARS

  • homepage reachable
  • openapi doc
  • pricing page
  • llms.txt
  • robots.txt
  • terms page
recent checks (18) live · click to expand
TIME STATUS RESP CAUSE
● OK 816ms
● OK 972ms
● OK 790ms
● OK 789ms
● OK 1043ms
● OK 1059ms
● OK 942ms
● OK 802ms
● OK 1197ms
● OK 1035ms
● OK 1081ms
● OK 1104ms
● OK 1155ms
● OK 1155ms
● OK 1421ms
● OK 1153ms
● OK 1074ms
● OK 1225ms

EMBED THIS BADGE

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