x402 List

x402 Protocol Service Directory

Content Intelligence API

Content

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.

UPTIME 24H 100% 7D 100% 30D 100%
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
1017ms
avg response
654ms
total checks
47
compliance A (11/11)

11 of 11 x402 conformance checks pass. Full checklist below.

jump to compliance checklist

price $0.01 to $0.02 (p45 in Content)
price (min)
$0.01
price (max)
$0.02
category percentile (min)
p45 in Content
category percentile (max)
p45 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.

traction $8.77 30d · 49 buyers
volume 30d
$8.77
buyers 30d
49
settlements 30d
539
last settlement
2026-07-21
top buyer share
32% of 30d volume
trend 7d vs 30d
0.62x the 30d daily rate
networks
eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdpKuc147dw2N9d

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

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

WHAT IT DOES

ai-derived

The service analyzes, extracts, summarizes, and provides metadata and links from web content.

category
content-intelligence
in
query params
content-analysisweb-extractionsummarizationmetadatalink-extraction

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
GET /content/analyze $0.02 Base/Solana USDC
GET /content/extract $0.01 Base/Solana USDC
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
  }
]

UPTIME

07-21 · uptime 100.0% · 631ms avg07-2107-21
RESPONSE TIME
07-21 · 631ms avg07-21 · 631ms avg07-2107-21
24h UPTIME 100%
UPTIME 24H 100%
AVG RESP 626ms
TOTAL CHECKS 63

RECENT CHECKS

TIME STATUS RESP
● OK 567ms
● OK 406ms
● OK 559ms
● OK 417ms
● OK 630ms
● OK 734ms
● OK 463ms
● OK 588ms
● OK 532ms
● OK 539ms
● OK 550ms
● OK 752ms
● OK 486ms
● OK 589ms
● OK 483ms
● OK 404ms
● OK 600ms
● OK 825ms

OVER TIME

All charts share the 24h window selected here. 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).

PRICE (captured 402, USD)
07-20 · $0.0107-21 · $0.01$0.0107-2007-21

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

SUB-SCORES (uptime + x402 compliance)
07-20 compliance: 100% checks07-21 uptime: 100.0% compliance: 100% checksuptimecompliance07-2007-21
VOLUME (on-chain settlement, USD)
07-20 · $0.7307-21 · $0.94peak $0.9407-2007-21

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
07-20 · 11 buyers07-21 · 15 buyerspeak 15 buyers07-2007-21

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 buyer count is attributed, the assessment block and the ranking, it is divided pro-quota by the 10 services sharing the address and can be fractional: a declared convention, not an individually observed measure.

COMPLIANCE

11/11 checks pass · grade A
  • 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

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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.

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