{"uid":"cap_VOb0Rfgl9OjbiZWtCiFXV","slug":"one-engine-numeric-percent-change-calculator-2e33149b","name":"ONE Engine Numeric Percent Change Calculator","description":"Low-cost pay-per-call utility APIs for autonomous agents using x402 on Base.","url":"https://one-search.one-engine.workers.dev/v3/numeric/percent-change/t8?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","required":["values"],"properties":{"max":{"type":"number"},"min":{"type":"number"},"size":{"type":"integer"},"digits":{"type":"integer"},"factor":{"type":"number"},"offset":{"type":"number"},"values":{"type":"array","description":"Finite numbers, maximum 1000"}}},"responseSchema":{"type":"object","additionalProperties":true},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_FYVW6XvHalwn9T8qX1t6_","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Computes percent change values for an array of numbers with configurable scaling, bounds, and precision options.","exampleAgentPrompt":"Calculate the percent change for these numbers: [100, 110, 95, 130, 120] — give me results rounded to 2 decimal places.","exampleUseCases":[{"title":"Stock price movement analysis","prompt":"I have a series of daily closing prices — [150, 162, 158, 171, 165] — can you calculate the percent change between each value, rounded to 2 decimal digits?"},{"title":"Sales growth rate computation","prompt":"Here are my monthly sales figures: [4200, 4800, 4500, 5100, 4900]. Calculate the percent change for each step so I can see growth trends, keep it between -50 and 50 percent range."},{"title":"Sensor reading normalization","prompt":"I have 5 sensor readings [0.85, 0.91, 0.78, 0.95, 0.88] and need the percent change between consecutive readings, scaled by a factor of 100 with 1 decimal digit of precision."}],"resultDescription":"Returns an object containing the computed percent change values for the input array, potentially filtered or scaled according to the provided min, max, factor, offset, digits, and size parameters.","failureModes":["Input array exceeds 1000 values — request rejected","Non-finite numbers (NaN, Infinity) in the values array — validation error","Missing required 'values' field — 400 bad request","Payment not provided or insufficient USDC — 402 payment required","Division by zero if a value of 0 appears in the series — may return null or error for that position"],"whenToPreferThis":"Choose this endpoint when you need a pay-per-call, low-cost computation of percent changes across a numeric array without setting up your own math infrastructure. Ideal for autonomous agents operating on Base that already handle x402 micropayments and need on-demand numeric transformations at $0.01 per call. Prefer this over self-hosted solutions when minimizing operational overhead matters.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T12:44:12.287Z","isFirstParty":false,"canonicalSlug":"one-engine-numeric-percent-change-calculator-2e33149b"}