{"uid":"cap_-0yLWM-U8MeZnWqaXARqg","slug":"numora-matrix-trace-6b2fa900","name":"Numora Matrix Trace","description":"100 pure math computation endpoints for AI agents. Statistics, financial math, linear algebra, equation solving, calculus, number theory, sequence generation, and unit conversions. Zero external dependencies. x402 micropayments on Base.","url":"https://numorapoi.orbonomy.xyz/api/matrix/trace","method":"POST","headers":{},"bodySchema":{"type":"object","required":["A"],"properties":{"A":{"type":"array","description":"Matrix (2D array)"}}},"responseSchema":{"type":"object","required":["success","result","computation"],"properties":{"result":{"type":"object","description":"Computation result varies by endpoint"},"success":{"type":"boolean","description":"Always true on success"},"computation":{"type":"string","description":"Human-readable description of what was computed"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.1","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":"$0.04/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.04","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.04","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_ufCuJF6foJZnGLpZt9ydd","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.04","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Computes the trace (sum of diagonal elements) of a given square matrix","exampleAgentPrompt":"Can you compute the trace of this matrix for me: [[4, 7, 2], [3, 6, 1], [5, 8, 9]]? I need the sum of its diagonal elements.","exampleUseCases":null,"resultDescription":"Returns a JSON object with success=true, a result object containing the computed trace (scalar sum of diagonal elements), and a human-readable computation string describing what was calculated.","failureModes":["Non-square matrix provided — trace is undefined for non-square matrices","Malformed 2D array input — returns error if A is not a proper 2D array","Empty matrix — may return zero or an error depending on implementation","Payment failure via x402 — 402 response if micropayment not provided or insufficient","Network timeout — if the endpoint is slow or unreachable"],"whenToPreferThis":"Use this endpoint when you need a pure, serverless, dependency-free computation of a matrix trace with no external data lookups. Ideal for AI agents that need precise linear algebra results programmatically and want to pay per-use via x402 micropayments on Base rather than maintaining a subscription or running local math libraries.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T18:56:26.137Z","isFirstParty":false}