{"uid":"cap_3OAfuRPe78wejbq8sNTcw","slug":"sampling-observations-category-frequencies-base-100-series-ef04a49c","name":"Sampling Observations — Category Frequencies + Base-100 Series","description":"Sampling observations — Category frequencies + Base-100 series: Category frequencies + Base-100 series for supplied sampling observations records (sample_value, sample_weight). Up to 200 rows; 2 independent reports using shared local analytical engines. No live lookup, prediction, professional assessment or external action. 0.01 USDC includes 2 supplied-data reports for up to 200 rows.","url":"https://market.datapackvibe.com/x402/assistant-ib26-analytics-15-105?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"rows":{"type":"array","items":{"type":"object","required":["row_id","dataset_group","date","sample_value","sample_weight"],"properties":{"date":{"type":"string","default":"","pattern":"^\\d{4}-\\d{2}-\\d{2}$","maxLength":10},"row_id":{"type":"string","default":"","maxLength":80,"minLength":1},"sample_value":{"type":["number","null"],"maximum":1000000000000,"minimum":-1000000000000},"dataset_group":{"type":"string","default":"","maxLength":80},"sample_weight":{"type":["number","null"],"maximum":1000000000000,"minimum":-1000000000000}},"additionalProperties":false},"default":[{"date":"2026-10-01","row_id":"row-1","sample_value":10,"dataset_group":"group-a","sample_weight":1},{"date":"2026-10-02","row_id":"row-2","sample_value":20,"dataset_group":"group-b","sample_weight":2},{"date":"2026-10-03","row_id":"row-3","sample_value":15,"dataset_group":"group-a","sample_weight":3},{"date":"2026-10-04","row_id":"row-4","sample_value":30,"dataset_group":"group-b","sample_weight":4}],"maxItems":200,"minItems":1},"field":{"enum":["sample_value","sample_weight"],"type":"string","default":"sample_value"},"base_index":{"type":"integer","default":0,"maximum":199,"minimum":0}}},"responseSchema":null,"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_0VO841KO9dQ4h6SXqqLoG","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 category frequency distributions and a base-100 index series from user-supplied weighted sampling observation records","exampleAgentPrompt":"I have up to 200 rows of weighted sampling observations with a sample_value and sample_weight per row, grouped by dataset_group and dated — can you run the category frequency report and base-100 index series on the sample_value field, using row index 0 as the base?","exampleUseCases":[{"title":"Survey response frequency analysis","prompt":"I've got 150 survey responses with numeric scores, group labels, and response weights — can you compute the category frequency breakdown and a base-100 index series across all of them using the sample_value field, starting the index at row 0?"},{"title":"Economic indicator rebasing","prompt":"I have monthly economic indicator readings across two groups with sampling weights — please give me both the category frequencies and a base-100 indexed series for sample_value, using my first row as the base period."},{"title":"A/B test weighted distribution check","prompt":"Can you analyze these 80 A/B test observations — each has a group label, date, numeric outcome, and weight — and return category frequencies plus a base-100 series on the sample_value field rebased to row 0?"}],"resultDescription":"Returns two analytical reports: (1) category frequency distributions showing how often each dataset_group category appears, optionally weighted; and (2) a base-100 index series normalizing the specified field (sample_value or sample_weight) relative to a chosen base row, covering up to 200 input rows processed entirely with local analytical engines.","failureModes":["Input array exceeds 200 rows — request will be rejected","Missing required row fields (row_id, dataset_group, date, sample_value, sample_weight) cause validation errors","base_index out of range (0–199) relative to actual number of rows supplied","null sample_value or sample_weight values may affect index computation and frequency counts","Malformed date strings not matching YYYY-MM-DD pattern will fail schema validation","Payment of 0.01 USDC not fulfilled will result in 402 response"],"whenToPreferThis":"Choose this endpoint when you have up to 200 pre-collected weighted observation records and need two complementary statistical summaries — category frequency distributions and a base-100 normalized index series — computed offline without any external data lookups, predictions, or professional assessments. It is ideal for lightweight, reproducible statistical reporting on survey, sampling, or time-series datasets at very low cost ($0.01 per call covering both reports).","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-15T12:38:53.583Z","isFirstParty":false,"canonicalSlug":"sampling-observations-category-frequencies-base-100-series-ef04a49c"}