x402 List

x402 Protocol Service Directory

Content Intelligence API

Content 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

Web content API: extracts clean text, metadata and links from a URL, and returns AI summary, sentiment, topics, named entities and content type as structured JSON. Priced per call in USDC on Base or Solana.

Pay from $0.01 to $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://content.hugen.tokyo ENDPOINTS 2 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
100%
uptime 30d
100%
uptime 90d
100%
response p95
1596ms
avg response
685ms
total checks
2,130

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 $0.01 to $0.02 (p50 in Content)
price (min)
$0.01
price (max)
$0.02
category percentile (min)
p50 in Content
category percentile (max)
p53 in Content
endpoints / prices
2 / 2
model
tiered
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
1808d
registrar
GMO Internet Group, Inc.
hosting
custom
domain created
2021-08-29

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 Domain 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

No AI synthesis has been produced for this service yet.

ENDPOINTS

Service endpoints with HTTP method, path, description, pricing, and network
METHOD PATH DESCRIPTION PRICE NETWORK ASSET 402 CHANNEL
GET /content/analyze $0.02 Base/Solana USDC header
GET /content/extract $0.01 Base/Solana USDC header
2 endpoints

REQUEST / RESPONSE EXAMPLE

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

// request
curl -i 'https://content.hugen.tokyo/content/analyze'
// 402 response (captured by monitor) · 2 payloads · 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": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
        },
        "payTo": "4du4AfkjJEwch2zk3shkPJVZfyJHNDnNjEWC6AboaS5Z",
        "amount": "20000",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://content.hugen.tokyo/content/analyze",
      "mimeType": "application/json",
      "description": "Comprehensive AI content analysis — sentiment scoring (-1.0 to 1.0), topic classification, named entity extraction, content type detection (news/blog/docs/tutorial), and credibility assessment. Returns structured analysis ready for immediate use. No LLM integration needed. Accepts USDC payments on Base and Solana"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {
              "url": "https://example.com/article"
            }
          },
          "output": {
            "type": "json",
            "example": {
              "summary": "...",
              "sentiment": {
                "label": "positive",
                "score": 0.7
              },
              "content_type": "news"
            }
          }
        },
        "tags": [
          "web",
          "extract",
          "summary",
          "ai"
        ],
        "schema": {
          "properties": {
            "input": {
              "required": [
                "method"
              ]
            }
          }
        },
        "category": "content-extraction",
        "discoverable": true
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x29322Ea7EcB34aA6164cb2ddeB9CE650902E4f60",
        "amount": "10000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      },
      {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
        },
        "payTo": "4du4AfkjJEwch2zk3shkPJVZfyJHNDnNjEWC6AboaS5Z",
        "amount": "10000",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://content.hugen.tokyo/content/extract",
      "mimeType": "application/json",
      "description": "Extract clean, readable text from any web page — removes navigation, ads, scripts, and boilerplate. Dual-engine extraction with JS-rendered page fallback for SPAs and dynamic content. Returns content with title, author, word count, language, and reading time. No headless browser or scraping library needed. Accepts USDC payments on Base and Solana"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {
              "url": "https://example.com/article"
            }
          },
          "output": {
            "type": "json",
            "example": {
              "title": "OpenAI Launches GPT-5 with Advanced Reasoning",
              "author": "John Smith",
              "content": "OpenAI announced GPT-5 today, marking a significant leap in reasoning capabilities. The model demonstrates improved performance across mathematical reasoning, coding, and scientific analysis benchmarks...",
              "language": "en",
              "word_count": 1250,
              "reading_time_minutes": 5
            }
          }
        },
        "tags": [
          "web",
          "extract",
          "summary",
          "ai"
        ],
        "schema": {
          "properties": {
            "input": {
              "required": [
                "method"
              ]
            }
          }
        },
        "category": "content-extraction",
        "discoverable": true
      }
    },
    "x402Version": 2
  }
]

OVER TIME

All charts use the 24h selector; each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/content-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
08-13 · uptime 100.0% · 1165ms avg08-1308-13
24h UPTIME 100%
RESPONSE TIME
08-13 · 1165ms avg08-13 · 1165ms avg08-1308-13
AVG RESP 690ms
PRICE (captured 402, USD)
08-12 · $0.01508-13 · $0.015$0.01508-1208-13

Median across 2 endpoints. Use the selector to isolate one.

SUB-SCORES (uptime + x402 compliance)
08-12 uptime: 100.0% compliance: 100% checks08-13 uptime: 100.0% compliance: 100% checksuptimecompliance08-1208-13

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)
building volume history (1 day so far)

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
building buyer history (1 day so far)

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 593ms
● SLOW 1328ms
● SLOW 1414ms
● SLOW 2730ms
● SLOW 2717ms
● OK 676ms
● SLOW 2019ms
● SLOW 1844ms
● OK 721ms
● OK 972ms
● SLOW 1801ms
● SLOW 2367ms
● SLOW 1221ms
● SLOW 2278ms
● SLOW 2328ms
● SLOW 1784ms
● SLOW 1663ms
● OK 960ms

EMBED THIS BADGE

Show that Content Intelligence API is monitored on x402-list. Paste this on your site or README, it links back to this live listing.

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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/content-intelligence-api/update.