{"uid":"cap_Jmsq_9wX6SFS9oFA2Nthc","slug":"compute-siliq-io-58210822","name":"Siliq SPC Analytics","description":"","url":"https://compute.siliq.io/analytics/spc","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","bodyType","body"],"properties":{"body":{"properties":{}},"type":{"type":"string","const":"http"},"method":{"enum":["POST","PUT","PATCH"],"type":"string"},"bodyType":{"enum":["json","form-data","text"],"type":"string"}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":{"request":{"lsl":45,"usl":55,"data":[45.2,46.1,47.3,48.5,49.1,50.2,51,50.8,49.9,48.7,47.5,46.8,47.2,48.1,49.3,50.5,51.2,50.9,49.8,48.6,47.4,46.9,47.1,48,49.2,50.4,51.1,50.7,49.7,48.5],"chartType":"xbar-r","subgroupSize":5},"response":{"n":30,"cp":1.0078,"pp":1.0078,"cpk":0.7773,"lcl":43.8954,"ppk":0.7773,"ucl":53.818,"sigma":1.6538,"alerts":[],"centerline":48.8567,"lcl_2sigma":45.5491,"ucl_2sigma":52.1642,"interpretation":"Process in control — no out-of-control signals detected. Cpk = 0.78 (not capable at 1.33 threshold).","compute_time_ms":1,"process_capable":false,"out_of_control_points":0}},"exampleRequest":{"lsl":45,"usl":55,"data":[45.2,46.1,47.3,48.5,49.1,50.2,51,50.8,49.9,48.7,47.5,46.8,47.2,48.1,49.3,50.5,51.2,50.9,49.8,48.6,47.4,46.9,47.1,48,49.2,50.4,51.1,50.7,49.7,48.5],"chartType":"xbar-r","subgroupSize":5},"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"down","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_x5HP0cbJyhZvnGlzUo0Jf","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Computes Statistical Process Control metrics including control limits, Western Electric rule violations, and process capability indices (Cp, Cpk) for a data series.","exampleAgentPrompt":"Run an SPC analysis on this dataset of 50 bottle-fill measurements (target 500ml, LSL 495ml, USL 505ml) — give me the control limits, flag any Western Electric rule violations, and calculate the Cp and Cpk.","exampleUseCases":null,"resultDescription":"Returns computed UCL/LCL control limits, a list of Western Electric rule violations with their indices, and process capability indices Cp and Cpk indicating whether the process is both stable and capable relative to specification limits.","failureModes":["Insufficient data points for reliable control limit calculation (too few samples)","Missing or invalid specification limits preventing Cp/Cpk calculation","Non-numeric or malformed data series returning a 400 validation error","Data with extreme outliers skewing control limit estimates","Payment failure via x402 protocol returning 402 status"],"whenToPreferThis":"Choose this endpoint when you need a complete SPC analysis bundle — control limits, Western Electric rule checks, and capability indices — in a single API call, rather than computing each separately. Ideal for quality engineers automating process monitoring pipelines or agents performing on-demand manufacturing quality assessments.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T14:26:34.483Z","isFirstParty":false}