{"uid":"cap_HUbo9AIJBd7KmuPKTx_py","slug":"agentindex-x402-research-4e7e36a4","name":"AgentIndex x402 Research","description":"Jev-powered research: routed search, cited answer, claims verified against sources. Ask a question, get a 5-8 sentence answer, each claim tagged to a numbered source, built from real page content - no invented facts. A fast paid LLM writes it, under 4.5s guaranteed; on a rare miss, a no-LLM extractive fallback (top sentences from the sources, picked by Jev) takes over instead, marked \"synthesis\":\"extractive\". Try GET /research/sample.","url":"https://x402.agentindex.world/research?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"query":{"type":"string","description":"The research question to answer, up to 500 characters."},"max_sources":{"type":"integer","description":"How many web sources to consider, 1-10. Default 5."}}},"responseSchema":{"type":"json","example":{"query":"What caused the 2026 Base network congestion in September?","answer":"Base experienced elevated congestion in mid-September 2026 driven by a surge in memecoin launch activity on Uniswap V2/V3 and Aerodrome [1]. Average gas prices briefly spiked above typical levels during peak trading windows [1][2]. The Base team noted no protocol-level incident and attributed the load to organic demand rather than an attack [2]. Several DEX aggregators reported temporarily degraded quote latency during the same window [3]. Network conditions normalized within about a day as launch volume subsided [1].","sources":[{"url":"https://example.com/base-report","title":"Base network activity report","source":"web","published_at":"2026-09-15T00:00:00Z"},{"url":"https://example.com/gas-tracker","title":"Gas price tracker","source":"web","published_at":"2026-09-16T00:00:00Z"},{"url":"https://example.com/dex-status","title":"DEX aggregator status page","source":"web","published_at":"2026-09-15T00:00:00Z"}],"timing_ms":{"total":3170,"search":1450,"verify":720,"synthesis":980},"claims_verified":true,"claims_verified_reason":null}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_dyZEWR8cVsSr_ofYQ4r2Q","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Answers a research question by searching the web, verifying claims, and synthesizing a cited, fact-checked answer with source attribution","exampleAgentPrompt":"Research what caused the recent Base network congestion in September 2026, checking up to 8 web sources, and give me a fact-checked answer with citations.","exampleUseCases":[{"title":"Crypto event investigation for analyst","prompt":"Research why Ethereum gas fees spiked last week — check up to 10 sources and give me a cited, verified explanation I can share with my team."},{"title":"Company background check for due diligence","prompt":"I need a researched summary of Anthropic's recent funding rounds and valuation, verified against at least 5 sources."},{"title":"Breaking news fact-check before publishing","prompt":"Fact-check whether the Fed actually raised interest rates this month — look at up to 7 sources and tell me if the claim is verified."}],"resultDescription":"A JSON object containing: a synthesized `answer` (plain text, with inline citation markers like [1][2]); a `sources` array with URL, title, source type, and published date for each reference; a `timing_ms` breakdown (total, search, verify, synthesis); and a `claims_verified` boolean with an optional `claims_verified_reason` explaining any caveats.","failureModes":["Query exceeds 500 characters — request rejected with validation error","max_sources out of range (not 1-10) — validation error","No relevant web sources found — answer may be empty or low-confidence","Payment not settled via x402/USDC on Base — 402 Payment Required returned","Transient web fetch failures may reduce source count below requested max","Claims verification may be inconclusive if sources conflict — claims_verified_reason will explain"],"whenToPreferThis":"Choose this endpoint when you need a synthesized, cited, fact-checked answer to a research question rather than a raw list of search results. It is especially valuable when source verification matters — e.g. fact-checking claims, investigating recent events, or producing reports that require attribution. Prefer it over a plain web-search endpoint when you want the synthesis and verification step done automatically and returned as a single structured response. Pay-per-call pricing at $0.005 USDC makes it cost-effective for on-demand agent queries without subscriptions.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T18:31:11.401Z","isFirstParty":false,"canonicalSlug":"agentindex-x402-research-4e7e36a4"}