{"uid":"cap_fZ90wXcULW9ChKZ2FbD0o","slug":"basic-utils-agent-standard-deviation-calculator-138590b2","name":"Basic Utils Agent – Standard Deviation Calculator","description":"A versatile utility agent offering calculator, statistics, datetime, and unit conversion services.","url":"https://basic-utils-agent.up.railway.app/statistics/stddev","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"data":{"type":"array","items":{"type":"number"},"description":"List of numeric values for statistical analysis. Maximum length: 10000"}}},"responseSchema":{"type":"json","example":{"stddev":1.414213562373095}},"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_NFsptAcqK86iqTryJZhbm","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":"Computes the standard deviation of a list of numeric values","exampleAgentPrompt":"Can you calculate the standard deviation of these numbers for me: 2, 4, 4, 4, 5, 5, 7, 9?","exampleUseCases":[{"title":"Quality control spread analysis","prompt":"I have measurements from our production line: 10.1, 10.3, 9.8, 10.0, 10.5, 9.9, 10.2 — can you calculate the standard deviation so I can see how consistent the output is?"},{"title":"Student grade variability check","prompt":"Here are the test scores from my class: 72, 85, 90, 68, 77, 95, 88, 61, 83, 79 — what's the standard deviation so I can understand how spread out the grades are?"},{"title":"Financial returns volatility","prompt":"Calculate the standard deviation of these daily returns for me: 0.5, -0.3, 1.2, -0.8, 0.4, 0.9, -0.1, 0.7 — I want to know how volatile this asset is."}],"resultDescription":"Returns a JSON object containing a single field 'stddev' with the computed standard deviation as a floating-point number (e.g. {\"stddev\": 1.414213562373095})","failureModes":["Empty array input returns an error or undefined result","Non-numeric values in the array cause a validation failure","Array exceeding 10,000 elements may be rejected","Malformed JSON body returns a 400 error","Payment failure (402) if x402 payment header is missing or insufficient"],"whenToPreferThis":"Choose this endpoint when you need a quick, cheap ($0.002 USDC) computation of standard deviation without setting up a local math library or statistical package. Ideal for agents that occasionally need statistical dispersion metrics on moderate-sized datasets (up to 10,000 values) without heavy infrastructure.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T18:45:54.220Z","isFirstParty":false}