{"uid":"cap_7oP1BK0AzgerPs_txAwKP","slug":"x402-gateway-production-up-railway-app-6434b5e6","name":"Crypto Market Rankings API","description":"Market rankings with price, volume, market cap — filterable by category","url":"https://x402-gateway-production.up.railway.app/api/crypto/markets","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","properties":{"page":{"type":"number","default":1,"example":1,"description":"Page number (1-500)"},"limit":{"type":"number","default":100,"example":100,"description":"Number of results (1-250)"},"order":{"type":"string","default":"market_cap_desc","example":"market_cap_desc","description":"Sort order"},"category":{"type":"string","example":"decentralized-finance-defi","description":"Filter by category ID"},"currency":{"type":"string","default":"usd","example":"usd","description":"Fiat currency for pricing"}},"additionalProperties":false}},"additionalProperties":false}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_JEMt115SBNDGvkrrGG_sp","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns cryptocurrency market rankings with price, volume, and market cap data, filterable by category","exampleAgentPrompt":"Show me the top 20 cryptocurrencies ranked by market cap with their current prices, 24-hour trading volume, and filter it to just DeFi tokens.","exampleUseCases":null,"resultDescription":"Returns a ranked list of cryptocurrency assets including coin name, symbol, current price, market capitalization, 24-hour trading volume, percentage price change, and market cap rank — filterable by category such as DeFi, Layer 1, meme coins, etc.","failureModes":["Invalid category filter returns empty list or 400 error","Rate limiting or payment failure returns 402 or 429","Unsupported currency parameter returns error","Stale or delayed market data during high volatility periods","Network timeout if upstream market data provider is slow"],"whenToPreferThis":"Use this endpoint when you need ranked cryptocurrency market data with filtering by category (e.g. DeFi, NFT, Layer 1) and need price, volume, and market cap in a single call. Prefer over generic web search when structured, machine-readable market data is required for analysis or comparison.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T00:49:23.602Z","isFirstParty":false}