x402 List

x402 Protocol Service Directory

Domain Intelligence API

Data PAYMENT-READY imported

payment-ready until 2026-09-11

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.

Part of the Hugen operator hub

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

measured since 2026-02-20 (start of our harvest window) · $197.30 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

VERDICT

ranking generation 3

solid 78/100 #213 of 265 in Data by measured score

What the score read on this service: status online, 99.9% uptime 30d, 2970ms response p95, x402 compliance 14 of 14, $0.02 price against the category, on-chain traction measured. Each of those is measured, and each is published in full below.

The score comes from our own monitoring, never from reviews, operator claims, or a language model: reliability, x402 compliance, price against the category, a deterministic risk flag, and a small on-chain traction term, weighted by ranking generation 3. It is not placement anyone can buy: the paid verify tier is reported beside it and is not one of its inputs. Every component below stays published and read-only.

It is a score inside Data, and only there: price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, which here means 265 listings, this one among them. That set is wider than the 265 the position above is counted against, because a listing we have measured too little of to rank still sits in the field the price and the speed are normalized over. The same service in a different field would read differently. The same engine answers GET /api/v1/best, and asked for a different pool (the whole directory, or another filter) it returns a different number for this service under this same ranking generation. Neither is more correct: they answer different questions, and the methodology states which is which.

Bands on the 0 to 100 measured score: strong at 93 and above, solid from 75, mixed from 55, weak below 55. Price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, so the score places a service in its own field.

ALTERNATIVES IN DATA

Other Data services in this directory, ordered by the same measured score. The figures are ours: 30-day uptime from our own probes, 30-day settlement volume read on-chain (a conservative undercount, and null where we cannot measure it, never a zero).

Ranked alternative x402 services in the same category, with band, measured score, 30-day uptime and 30-day on-chain settlement volume
SERVICE BAND SCORE UPTIME 30D VOL 30D
ThirdMade Shelf strong 98 100% ---
WhaleTape strong 98 97% ---
AgentToll strong 98 100% ---
TariffMonkee strong 97 99.7% ---
Utilia Agent Utilities strong 97 99.9% ---
5 of 264 other ranked services in Data · see the whole category

ASSESSMENT

updated 2h ago

The parts the verdict above is computed from, each with its proof. Click any chip. Measured values stay read-only; unknown is honest, and an unknown is never counted as a zero.

reliability 99.9%
uptime 24h
100%
uptime 7d
99.8%
uptime 30d
99.9%
uptime 90d
100%
response p95
2970ms
avg response
1393ms
total checks
2,741

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 (p75 in Data)
price (min)
$0.02
category percentile (min)
p75 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 $3.0245 30d · 336 buyers
volume 30d
$3.0245
buyers 30d
336
settlements 30d
2,996
measured since
2026-02-20 (start of our harvest window)
last settlement
2026-09-04
top buyer share
62% of 30d volume
trend 7d vs 30d
0.44x the 30d daily rate
networks
eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdpKuc147dw2N9d
volume all-time
$197.30
settlements all-time
75,301
median settlement 30d
$0.01
max settlement 30d
$0.50
settled via
coinbase ($30.23, 2,995 tx), dexter ($0.01, 1 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 7d 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
08-29 · uptime 100.0% · 1401ms avg08-30 · uptime 100.0% · 1585ms avg08-31 · uptime 100.0% · 2120ms avg09-01 · uptime 98.9% · 2025ms avg09-02 · uptime 100.0% · 1635ms avg09-03 · uptime 100.0% · 1869ms avg09-04 · uptime 100.0% · 1730ms avg08-2909-04
7d UPTIME 99.8%
RESPONSE TIME
08-29 · 1401ms avg08-29 · 1401ms avg08-30 · 1585ms avg08-30 · 1585ms avg08-31 · 2120ms avg08-31 · 2120ms avg09-01 · 2025ms avg09-01 · 2025ms avg09-02 · 1635ms avg09-02 · 1635ms avg09-03 · 1869ms avg09-03 · 1869ms avg09-04 · 1730ms avg09-04 · 1730ms avg08-2909-04
AVG RESP 1394ms
PRICE (captured 402, USD)
08-28 · $0.0209-04 · $0.02$0.0208-2809-04
SUB-SCORES (uptime + x402 compliance)
08-28 uptime: 100.0% compliance: 100% checks08-29 uptime: 100.0% compliance: 100% checks08-30 uptime: 100.0% compliance: 100% checks08-31 uptime: 100.0% compliance: 100% checks09-01 uptime: 99.9% compliance: 100% checks09-02 uptime: 99.9% compliance: 100% checks09-03 uptime: 99.9% compliance: 100% checks09-04 uptime: 99.9% compliance: 100% checksuptimecompliance08-2809-04

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)
08-29 · $0.1508-30 · $0.4708-31 · $0.2509-01 · $0.5909-02 · $0.2609-03 · $109-04 · $0.36peak $108-2909-04

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
08-29 · 18 buyers08-30 · 18 buyers08-31 · 16 buyers09-01 · 18 buyers09-02 · 22 buyers09-03 · 25 buyers09-04 · 14 buyerspeak 25 buyers08-2909-04

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 2026-09-04

  • 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 1875ms
● SLOW 2644ms
● OK 1443ms
● SLOW 3113ms
● SLOW 2406ms
● OK 1135ms
● OK 787ms
● OK 1387ms
● OK 769ms
● OK 811ms
● OK 1255ms
● OK 1323ms
● OK 1787ms
● OK 1063ms
● OK 1569ms
● OK 1917ms
● SLOW 2142ms
● SLOW 2578ms

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RUN THIS SERVICE?

Keep this listing accurate: propose changes to the name, description, website, category or add new endpoints to monitor. Ownership is verified with a domain proof and every change is reviewed manually; measured data stays read-only.

[ update this listing ]

Earn the verified tier: x402list pays a real call to this endpoint and, if it delivers, the service is delivery-verified. The fee covers the cost of the probe, not the badge; there is no refund if the call does not deliver. Agent and API only, no in-browser signing. See /api.

[ verify this service ($0.25) ]

To request delisting, email info@x402-list.com or update your listing at /services/domain-intelligence-api/update.