{"uid":"cap_MB3ZYErq_yXGoGUT28Aqd","slug":"delx-commerce-numeric-outlier-scan-f3f5db3d","name":"Delx Commerce — Numeric Outlier Scan","description":"Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.","url":"https://commerce.delx.ai/api/v1/x402/numeric-outlier-scan?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"values":{"type":"array","description":"Input field: values."},"z_threshold":{"type":"number","description":"Input field: z_threshold."}}},"responseSchema":{"type":"json","example":{"mean":48.6,"count":5,"schema":"delx/util-numeric-outlier-scan/v1","z_threshold":2,"outlier_count":0,"outlier_indexes":[],"standard_deviation":75.703633}},"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_Ee1OVj0LzzEUex0Y-7HeO","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":"Scans an array of numeric values and identifies statistical outliers using z-score thresholding, returning mean, standard deviation, and outlier indexes.","exampleAgentPrompt":"Can you scan this list of numbers — [12, 15, 14, 300, 13, 11] — for outliers using a z-score threshold of 2? I want to know which values are anomalous and get the mean and standard deviation.","exampleUseCases":[{"title":"Sensor spike detection in IoT data","prompt":"I have a batch of temperature sensor readings: [22.1, 21.8, 22.5, 99.3, 21.9, 22.0] — can you scan them for outliers using a z-score threshold of 2.5 and tell me which readings look like spikes?"},{"title":"Financial price anomaly flagging","prompt":"Here are daily closing prices for a stock this month: [102, 105, 103, 101, 98, 245, 104, 100] — run an outlier scan with z-threshold 2 and tell me which days had abnormal prices."},{"title":"Quality control on manufacturing measurements","prompt":"I've got a list of product weight measurements from today's production run: [500, 499, 501, 498, 502, 350, 500, 499] — can you identify any outliers at a z-score threshold of 3?"}],"resultDescription":"Returns a JSON object containing the computed mean, standard deviation, total count of values, the configured z-score threshold, the number of outliers detected, and an array of indexes corresponding to the outlier values in the original input array.","failureModes":["Empty or missing 'values' array causes validation error","Non-numeric values in array may cause computation failure","Very small arrays (fewer than 2 elements) may produce unreliable standard deviation","Extremely high z_threshold values may result in zero outliers being detected even for visibly extreme data","Missing z_threshold defaults to a preset value — results may differ from expectation if not explicitly set"],"whenToPreferThis":"Choose this endpoint when you need a fast, stateless, pay-per-call numeric outlier scan without setting up infrastructure or a data pipeline. Ideal for agents processing ad-hoc numeric arrays where you want exact z-score-based anomaly detection with no recurring subscription cost. Prefer over general-purpose data platforms when you only need this single computation on demand.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T00:53:53.950Z","isFirstParty":false,"canonicalSlug":"delx-commerce-numeric-outlier-scan-f3f5db3d"}