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Numora Matrix Trace
x402
Numora Matrix Trace is a paid API for AI agents from numormor.netlify.app, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-14).
Computes the trace (sum of diagonal elements) of a square matrix
Price / call$0.1
Success—
StatusUnknown
How this service works
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.
Output
Returns a JSON object with a boolean success flag, a result object containing the computed trace (scalar sum of the main diagonal), and a human-readable computation description string explaining what was calculated.
Example use cases
Portfolio covariance matrix analysis
“I need to find the trace of this correlation matrix to understand the total variance across my investment portfolio: [[1.0, 0.3, 0.2], [0.3, 1.0, 0.5], [0.2, 0.5, 1.0]]. What does that tell me?”
Machine learning model layer verification
“Can you compute the trace of this weight matrix from my neural network layer to help me validate the model's numerical properties: [[0.5, -0.2, 0.1], [0.3, 0.8, -0.4], [-0.1, 0.6, 0.2]]?”
System stability eigenvalue check
“I'm analyzing a dynamical system and need the trace of this state transition matrix to estimate the sum of eigenvalues: [[2, 1, 0], [0, 3, 1], [0, 0, 1]]. Can you calculate that for me?”
Technical details
Endpoint
POSThttps://numormor.netlify.app/api/matrix/traceWhen to prefer
Use this endpoint when you need a pure, dependency-free computation of the matrix trace (sum of diagonal elements) for any square matrix. Prefer this over general-purpose math libraries when you need a lightweight, API-accessible, pay-per-use computation in an agent workflow, especially when already using the Numora suite of math endpoints.
Side effects
- Non-square matrix provided — trace is undefined for non-square matrices
- Missing required field A — returns validation error
- A is not a 2D array — malformed input error
- Empty matrix array — computation error
- Payment not completed via x402 — 402 Payment Required response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| Arequired | array | Matrix (2D array) |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| resultrequired | object | Computation result varies by endpoint |
| successrequired | boolean | Always true on success |
| computationrequired | string | Human-readable description of what was computed |
Tags
x402
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