{"uid":"cap_oPceLxD1VmT8_orybHw3g","slug":"cited-brief-39455905","name":"Cited Brief","description":"Pay-per-call web research tools for AI agents, paid in USDC over x402.","url":"https://cited-brief.cited-brief.workers.dev/brief?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"urls":{"type":"array","items":{"type":"string"},"maxItems":5,"minItems":1,"description":"Public http(s) pages to answer from"},"question":{"type":"string","maxLength":500,"minLength":1,"description":"The question to answer"}}},"responseSchema":{"type":"json","example":{"model":"gemini-3.5-flash-lite","answer":"The Pro plan costs $10 per user per month when billed yearly.","claims":[{"url":"https://example.com/pricing","text":"Pro is $10 per user per month, billed yearly","quote":"Pro $10 per user/month billed annually"}],"question":"What does the Pro plan cost per user per month, billed yearly?","dropped_unverified":0}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.1","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.1/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.1","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.1","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_Z4AwNkzM1n5rM_NjTIxVF","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.1","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Answers a user question by extracting and citing evidence from specified web pages, returning a verified answer with source quotes","exampleAgentPrompt":"Go to https://stripe.com/pricing and https://stripe.com/docs/billing and answer: what does Stripe charge per successful card transaction for standard accounts?","exampleUseCases":[{"title":"Competitive pricing research from live pages","prompt":"Look at https://notion.so/pricing and https://www.notion.so/help/billing and tell me: what does the Plus plan cost per user per month when billed annually?"},{"title":"Policy detail lookup from company docs","prompt":"Check https://openai.com/policies/usage-policies and answer: what types of content are explicitly prohibited under OpenAI's usage policy?"},{"title":"Feature verification before recommending a tool","prompt":"Read https://linear.app/features and https://linear.app/changelog and answer: does Linear support GitHub integration, and if so what does it do?"}],"resultDescription":"A JSON object containing a plain-language answer to the question, an array of claims each with the source URL, the verbatim quote used, and the supporting text, plus a count of claims dropped for being unverifiable and the model that generated the answer.","failureModes":["URL is behind a paywall or login — page content cannot be fetched, claim dropped","URL returns non-HTML content (PDF, binary) — may fail to extract text","Question exceeds 500 characters — request rejected with validation error","Fewer than 1 or more than 5 URLs provided — request rejected","No verifiable evidence found in pages — answer returned with zero claims","Page loads slowly or times out — dropped from evidence set","USDC payment insufficient or x402 handshake fails — payment error, call not executed"],"whenToPreferThis":"Choose this endpoint when you need a grounded, citation-backed answer derived from specific known URLs rather than a broad web search. It is ideal when you already know which pages contain the answer and want verifiable quotes — not open-ended discovery. Prefer it over general search APIs when auditability and source traceability matter, and over raw scraping when you need a synthesized answer rather than raw HTML. The pay-per-call USDC model makes it suitable for on-demand agent workflows without subscriptions.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-17T06:31:09.617Z","isFirstParty":false,"canonicalSlug":"cited-brief-39455905"}