{"id":"9846cfbf-0947-46c0-991f-197b8f17cdd5","shortId":"dzYpwG","kind":"x402","title":"Extract, summarize, and analyze web content via a single API call, paid per-request with x402.","tagline":"Extract, summarize, and analyze web content via a single API call, paid per-request with x402.","description":"The Content Intelligence API at content.hugen.tokyo provides web content extraction, summarization, and analysis through a set of x402-payable endpoints. The `/content/extract` endpoint accepts a URL query parameter and returns the extracted article content including title, author, word count, language, and estimated reading time. A dual-engine extraction approach handles both static and JavaScript-rendered pages. Related endpoints on the same service include `/content/metadata`, `/content/links`, `/content/summary`, and `/content/analyze`, each accepting a URL and optional `strip_query` boolean parameter.\n\nThe endpoint is live and returns an x402 payment challenge requiring $0.01 USDC on Base per call. Alternative access methods are available: an MCP gateway at mcp.hugen.tokyo, a free API key with $0.05 credit via discovery.hugen.tokyo, or the `x402-pay` Python SDK for one-line access without wallet setup. The API is documented via an OpenAPI 3.1 spec and an llms.txt endpoint for machine-readable descriptions.\n\nResponse schemas for the paid endpoints are not explicitly defined in the OpenAPI spec (empty schema objects), but the sample response in the x402 challenge shows structured JSON with fields like `content`, `title`, `author`, `word_count`, `language`, and `reading_time_minutes`. The API is versioned at 0.1.0, indicating early-stage development.","tags":[],"capabilities":["web-content-extraction","article-text-extraction","js-rendered-page-support","url-metadata-extraction","link-extraction","content-summarization","content-analysis","x402-payment","usdc-on-base"],"categories":["search","llm","web-scraping"],"synonyms":["web scraper API","article extractor","content parser","readability API","URL content extraction","web page summarizer","text extraction service","web content API"],"warnings":["Response schemas are not defined in the OpenAPI spec (empty schema objects); output structure is inferred from the x402 challenge sample only","API is version 0.1.0 — early stage, interface may change","No dedicated documentation, pricing, or README pages found (all return 404)"],"endpointUrl":"https://content.hugen.tokyo/content/extract","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x29322Ea7EcB34aA6164cb2ddeB9CE650902E4f60","amount":"5000","scheme":"exact","network":"eip155:8453","maxTimeoutSeconds":300},{"asset":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","extra":{"feePayer":"Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"},"payTo":"4du4AfkjJEwch2zk3shkPJVZfyJHNDnNjEWC6AboaS5Z","amount":"5000","scheme":"exact","network":"solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp","maxTimeoutSeconds":300}]},"qualityScore":"0.720","qualityRationale":"The endpoint is live with a valid x402 402 challenge, has an OpenAPI 3.1 spec with defined parameters, and provides a sample response. However, response schemas are empty in the spec, no dedicated docs or pricing page exists beyond the Swagger UI, and the API is at version 0.1.0. The sample response in the challenge gives reasonable confidence about the output 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'/content/extract':57 '/content/links':102 '/content/metadata':101 '/content/summary':103 '0.01':127 '0.05':148 '0.1.0':231 '3.1':174 'URL content extraction' 'accept':59,107 'access':134,163 'altern':133 'analysi':47 'analyz':4,21 'api':10,27,38,145,168,227 'approach':85 'articl':68 'article extractor' 'article-text-extraction' 'author':72,218 'avail':137 'base':130 'boolean':114 'call':11,28,132 'challeng':125,209 'content':6,23,36,43,69,216 'content parser' 'content-analysis' 'content-summarization' 'content.hugen.tokyo':40 'count':74,220 'credit':149 'defin':194 'descript':184 'develop':236 'discovery.hugen.tokyo':151 'document':170 'dual':82 'dual-engin':81 'earli':234 'early-stag':233 'empti':199 'endpoint':55,58,95,117,179,190 'engin':83 'estim':77 'explicit':193 'extract':1,18,44,67,84 'field':214 'free':144 'gateway':140 'handl':86 'includ':70,100 'indic':232 'intellig':37 'javascript':91 'javascript-rend':90 'js-rendered-page-support' 'json':212 'key':146 'languag':75,221 'like':215 'line':162 'link-extraction' 'live':119 'llms.txt':178 'machin':182 'machine-read':181 'mcp':139 'mcp.hugen.tokyo':142 'method':135 'minut':225 'object':201 'one':161 'one-lin':160 'openapi':173,197 'option':111 'page':93 'paid':12,29,189 'paramet':63,115 'pay':156 'payabl':54 'payment':124 'per':14,31,131 'per-request':13,30 'provid':41 'python':157 'queri':62,113 'read':78,223 'readability API' 'readabl':183 'relat':94 'render':92 'request':15,32 'requir':126 'respons':185,205 'return':65,121 'sampl':204 'schema':186,200 'sdk':158 'servic':99 'set':50 'setup':166 'show':210 'singl':9,26 'spec':175,198 'stage':235 'static':88 'strip':112 'structur':211 'summar':2,19,45 'text extraction service' 'time':79,224 'titl':71,217 'url':61,109 'url-metadata-extraction' 'usdc':128 'usdc-on-base' 'version':229 'via':7,24,150,171 'wallet':165 'web':5,22,42 'web content API' 'web page summarizer' 'web scraper API' 'web-content-extraction' 'without':164 'word':73,219 'x402':17,34,53,123,155,208 'x402-pay':154 'x402-payable':52 'x402-payment'","prices":[{"id":"0895d355-e56c-4645-a77f-9a6d9f1dd6f8","listingId":"9846cfbf-0947-46c0-991f-197b8f17cdd5","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":null,"chain":"base","payTo":"0x29322Ea7EcB34aA6164cb2ddeB9CE650902E4f60","paymentMethod":"x402-usd coin","isPrimary":true,"details":{"scheme":"exact","accepts_all":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x29322Ea7EcB34aA6164cb2ddeB9CE650902E4f60","amount":"5000","scheme":"exact","network":"eip155:8453","maxTimeoutSeconds":300},{"asset":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","extra":{"feePayer":"Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"},"payTo":"4du4AfkjJEwch2zk3shkPJVZfyJHNDnNjEWC6AboaS5Z","amount":"5000","scheme":"exact","network":"solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:37.909Z"}],"sources":[{"listingId":"9846cfbf-0947-46c0-991f-197b8f17cdd5","source":"x402_bazaar","sourceId":"https://content.hugen.tokyo/content/extract","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:37.909Z","lastSeenAt":"2026-04-22T05:32:30.266Z"}],"details":{"listingId":"9846cfbf-0947-46c0-991f-197b8f17cdd5","quickStartSnippet":"pip install x402-pay\n\nimport x402_pay\nresponse = x402_pay.get(\n    'https://content.hugen.tokyo/content/extract?url=https://example.com'\n)\nprint(response.json())","exampleRequest":{"url":"https://content.hugen.tokyo/content/extract?url=https%3A%2F%2Fexample.com%2Farticle&strip_query=false","method":"GET"},"exampleResponse":{"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},"schema":null,"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The API is described as 'Extract, summarize, and analyze web content in one call. Dual-engine extraction handles JS-rendered pages.'","source_url":"https://content.hugen.tokyo/docs"},{"claim":"The /content/extract endpoint requires a url query parameter (string, max 4096 chars) and optional strip_query boolean","source_url":"https://content.hugen.tokyo/openapi.json"},{"claim":"Payment required is $0.01 USDC on Base per call","source_url":"https://content.hugen.tokyo/content/extract"},{"claim":"Alternative access via MCP gateway, API key with $0.05 credit, or x402-pay Python SDK","source_url":"https://content.hugen.tokyo/content/extract"},{"claim":"API version is 0.1.0","source_url":"https://content.hugen.tokyo/docs"}],"useCases":["Extracting clean article text from any URL for downstream LLM processing","Building research agents that need structured content from web pages","Summarizing web articles without running your own scraping or LLM infrastructure","Analyzing web content for language, authorship, and reading metrics","Extracting all links from a page for crawling or link-graph analysis"],"bestFor":["AI agents needing clean web content extraction on demand","Developers who want article parsing without managing scraping libraries","Workflows requiring per-call micropayment access to content intelligence"],"notFor":["Bulk scraping of thousands of pages at low cost (per-call pricing adds up)","Extracting content from pages behind authentication or paywalls"],"kindDetails":{},"updatedAt":"2026-04-22T02:26:13.268Z"}}