{"uid":"cap_lP2-3z7UAZfbBrWK42Wt-","slug":"x402-toolbox-crypto-coin-market-top-70af5245","name":"x402-toolbox Crypto Coin Market Top","description":"309 deterministic pay-per-call tools for AI agents over x402 (USDC, Base). No signup, no API key: the payment is the identity.","url":"https://x402-toolbox.shablony-pro.workers.dev/crypto/coin-market-top?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"schema":{"type":"string"}}},"responseSchema":{"type":"json","example":{"ok":true,"paid":true}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","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":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_RiQUozCiyvcknPDIEH2e3","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the top cryptocurrencies by market capitalization from a pay-per-call API using x402 micropayments","exampleAgentPrompt":"What are the top cryptocurrencies by market cap right now — can you pull the current coin market rankings for me?","exampleUseCases":[{"title":"Crypto portfolio market overview","prompt":"Can you pull up the top coins by market cap so I can see which assets are dominating the crypto market right now?"},{"title":"Research top coins before investing","prompt":"I'm looking into crypto investments — what are the highest market cap coins at the moment?"},{"title":"Daily crypto briefing for a newsletter","prompt":"Fetch the current top cryptocurrencies by market cap so I can include them in today's crypto market update."}],"resultDescription":"A JSON response listing the top cryptocurrencies ranked by market capitalization, including coin names, symbols, rankings, and market data such as prices and market cap values.","failureModes":["Payment not included or insufficient USDC — returns 402 Payment Required","Invalid schema parameter — may return empty or malformed response","Upstream data provider unavailable — returns error or stale data","Rate limiting at the worker level — returns 429 Too Many Requests"],"whenToPreferThis":"Choose this endpoint when you need a quick, no-signup ranked list of top cryptocurrencies by market cap and can pay $0.003 USDC per call via x402 micropayments. Ideal for AI agents that need to avoid API key management entirely, using on-chain USDC payments on Base as the authentication mechanism.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T03:40:53.999Z","isFirstParty":false,"canonicalSlug":"x402-toolbox-crypto-coin-market-top-70af5245"}