{"uid":"cap_lSRFa1YEY9EazUJC9K39d","slug":"x402-multi-tool-api-web-search-serp-926d4fb9","name":"x402 Multi-Tool API — Web Search (SERP)","description":"Pay-per-request data toolkit for AI agents — 13 no-auth tools, $0.005 USDC each via x402. Web search, read URL, crypto price/markets/trending, Wikipedia, news headlines, weather, FX rates, IP geolocation, DNS lookup, stock quotes, and domain WHOIS.","url":"https://x402deploy.vercel.app/api/serp","method":"POST","headers":{},"bodySchema":{"type":"object","required":["query"],"properties":{"query":{"type":"string","description":"Search query string"},"country":{"type":"string","description":"ISO country code"},"num_results":{"type":"integer"}}},"responseSchema":{"query":"best vector database","total":1,"country":"us","results":[{"url":"https://example.com","title":"Example result","snippet":"An example snippet","position":1}]},"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__lPhCPisGoo0PMX7sEdkA","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":"Performs a web search (SERP) and returns ranked results including URLs, titles, and snippets, paid per-request via x402 USDC micropayment.","exampleAgentPrompt":"Search the web for 'best open-source vector databases 2024' and give me the top 5 results including their URLs and snippets, searching from the US.","exampleUseCases":[{"title":"Research product recommendations online","prompt":"Search the web for 'best noise-cancelling headphones under $300' and return the top 5 results so I can see what sites are recommending."},{"title":"Find competitor websites for a niche","prompt":"Do a web search for 'AI meeting transcription tools' in the US and give me the top 10 results with their URLs and titles."},{"title":"Fetch current event information","prompt":"Search for 'Federal Reserve interest rate decision June 2025' and return the top 5 results with snippets so I can summarize what happened."}],"resultDescription":"Returns a JSON object containing the original query, total result count, country used, and an array of ranked results — each with a URL, page title, text snippet, and position number.","failureModes":["Missing required 'query' field returns a 400 validation error","Payment not received or insufficient USDC causes a 402 Payment Required response","Invalid ISO country code may produce no results or default to a fallback country","Query with no indexed results returns an empty results array","Rate limiting or upstream SERP provider downtime returns a 503 or 500 error"],"whenToPreferThis":"Choose this endpoint when an AI agent needs live web search results without setting up API keys or OAuth — ideal for pay-per-use agentic workflows where cost-per-call must be minimal ($0.005 USDC). Prefer over traditional search APIs when the agent infrastructure already supports x402 micropayments and needs no-auth, instant access to ranked web results with snippets.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T00:41:06.785Z","isFirstParty":false}