{"uid":"cap_bpiymPqx5gjMokyiU3CEm","slug":"pennyrail-number-stats-1d67b906","name":"PennyRail Number Stats","description":"Machine-readable settlement service","url":"https://pennyrail.vercel.app/api/p/nano/number.stats--number-stats","method":"POST","headers":{},"bodySchema":{"type":"object","required":["input"],"properties":{"input":{"type":"array"}}},"responseSchema":{"type":"object","additionalProperties":true},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_gafBkbnbfcZc0NWLxddsX","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Computes descriptive statistics (count, mean, min, max, etc.) over an array of numbers via a micropayment-gated API","exampleAgentPrompt":"Can you calculate the descriptive statistics — mean, min, max, and standard deviation — for this list of numbers: [4, 7, 13, 2, 19, 8, 5]?","exampleUseCases":[{"title":"Summarize sensor reading batch","prompt":"I have a batch of temperature sensor readings from today: [21.3, 22.1, 19.8, 23.5, 20.0, 22.7] — can you compute the mean, min, max, and standard deviation for me?"},{"title":"Quick grade distribution analysis","prompt":"Here are the exam scores for my class: [88, 72, 95, 60, 77, 84, 91, 68, 79, 85] — give me a statistical summary including the average and spread."},{"title":"Financial data range check","prompt":"I have these daily revenue figures in dollars: [1200, 980, 1540, 870, 1320, 1100] — what are the key stats like mean, min, and max so I can spot outliers?"}],"resultDescription":"A JSON object containing descriptive statistics computed over the input number array, likely including count, sum, mean, median, min, max, variance, and standard deviation.","failureModes":["Empty array input may return an error or undefined statistics","Non-numeric values in the array may cause a computation error","Malformed input (non-array type) returns a validation error","Payment failure (insufficient USDC balance) results in a 402 response and no computation","Very large arrays may time out on the serverless Vercel infrastructure"],"whenToPreferThis":"Choose this endpoint when you need a quick, pay-per-use descriptive statistics computation over a numeric array without spinning up your own statistical library or service. It is well-suited for lightweight, one-off analyses in agent workflows where installing a math library is impractical and the $0.001 micropayment cost per call is acceptable.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T07:20:09.685Z","isFirstParty":false}