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Numora Matrix Trace
x402
Numora Matrix Trace is a paid API for AI agents from numormo.vercel.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' field, a 'result' object containing the scalar trace value (sum of main diagonal elements), and a 'computation' string describing what was calculated in human-readable form.
Example use cases
Eigenvalue analysis preprocessing
“I have a 4x4 matrix [[5,2,1,0],[3,8,4,1],[0,2,6,3],[1,0,2,7]] and I need its trace to verify that the sum of eigenvalues equals it — can you compute that for me?”
Physics simulation matrix check
“For my simulation I need to confirm the trace of this 3x3 inertia tensor: [[10,0,0],[0,15,0],[0,0,20]] — what is it?”
Machine learning covariance inspection
“I have a covariance matrix [[1.2, 0.4, 0.1],[0.4, 0.9, 0.3],[0.1, 0.3, 1.5]] and I need to quickly get its trace to understand total variance — can you calculate that?”
Technical details
Endpoint
POSThttps://numormo.vercel.app/api/matrix/traceWhen to prefer
Use this endpoint when you need a pure, zero-dependency mathematical computation of the matrix trace with no external service calls. Ideal for AI agents that need fast, reliable scalar results from matrix inputs and prefer micropayment-based pay-per-use pricing over subscription APIs. Best when correctness and simplicity matter more than visualization or symbolic output.
Side effects
- Non-square matrix provided — trace is only defined for square matrices
- Malformed 2D array input — jagged arrays or non-numeric values will fail
- Missing required 'A' field in request body
- Empty matrix provided
- Payment failure via x402 micropayment protocol — insufficient USDC balance
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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