{"uid":"cap_wmAbNPyy2sWS3t-JrQcM5","slug":"x402-data-api-price-changes-b8e1f91b","name":"x402 Data API – Price Changes","description":"x402 APIs whose price changed since a snapshot taken the given number of days ago, biggest relative change first.","url":"https://tb2s28fm0h8dkq2t.68r.lambda-web.us-east-1.on.aws/v1/market/price-changes?utm_source=zero.xyz","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":{"days":{"type":"integer","description":"compare with the snapshot from this many days ago (1-30, default 7)"},"limit":{"type":"integer","description":"how many results (1-50, default 20)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"total":{},"results":{},"compared_with":{}}}}}}},"responseSchema":null,"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_lSvVY5p2p9sPKPeOWV3Xc","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 x402 APIs whose prices have changed the most (relative change) compared to a snapshot taken N days ago, sorted by biggest mover first.","exampleAgentPrompt":"Show me the 20 x402 APIs with the biggest relative price changes compared to 14 days ago, biggest movers first.","exampleUseCases":[{"title":"Detect sudden price spikes in x402 market","prompt":"What x402 APIs have had the largest price increases in the last 3 days? Show me the top 10 biggest movers."},{"title":"Weekly pricing trend review","prompt":"Give me the 30 x402 APIs with the most significant price changes over the past 7 days — I want to see which ones shifted the most relative to where they were."},{"title":"Monthly repricing analysis for API buyers","prompt":"Pull up all x402 APIs that changed price in the last 30 days, sorted by the biggest relative change first, so I can decide which ones I should reconsider using."}],"resultDescription":"A ranked list of x402 API listings whose prices changed since the snapshot date, each entry showing the API details, old price, new price, and relative price change percentage, sorted descending by the magnitude of change. Also includes a total count and the snapshot comparison timestamp.","failureModes":["days parameter out of range (must be 1-30) returns validation error","limit parameter out of range (must be 1-50) returns validation error","no price changes detected in the window returns empty results array","upstream data unavailable returns 5xx error","payment not sent or insufficient USDC returns 402 Payment Required"],"whenToPreferThis":"Use this endpoint when you need to identify which x402 APIs have repriced most aggressively over a given time window. It is the right choice for price-volatility monitoring, market-change alerting, or buyer/seller intelligence on the x402 ecosystem. Prefer it over the 'popular APIs' or 'new listings' endpoints when the user's question is specifically about price movement or repricing events.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-25T12:31:18.313Z","isFirstParty":false,"canonicalSlug":"x402-data-api-price-changes-b8e1f91b"}