# Numora Matrix Rank Computation

> Numora Matrix Rank Computation 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 rank of a given matrix (2D array) using pure mathematical computation with no external dependencies.

## Facts

- Endpoint: POST https://numormo.vercel.app/api/matrix/rank
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/numora-matrix-rank-computation-ccd5f769
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_AxIy6OhMpG141ndnCPiQR

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability numora-matrix-rank-computation-ccd5f769 -d '<json body>'
```

Example prompt: What is the rank of the matrix [[1,2,3],[4,5,6],[7,8,9]]?

## When to prefer this

Choose this endpoint when you need a fast, self-contained, dependency-free matrix rank computation for linear algebra tasks such as checking linear independence, verifying solvability of linear systems, or analyzing data dimensionality. Ideal for AI agents that need precise mathematical results without relying on external math libraries or cloud ML services. Pay-per-call micropayment model suits on-demand, infrequent use cases.

## Known failure modes

- Malformed or non-rectangular matrix input returns an error
- Non-numeric values in matrix elements cause computation failure
- Empty matrix or missing 'A' field returns validation error
- Extremely large matrices may time out or hit memory limits

## 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 'success' (boolean), 'result' (object containing the computed rank value), and 'computation' (a human-readable string describing what was computed, e.g. 'Rank of a 3x3 matrix').

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "A"
 ],
 "properties": {
  "A": {
   "type": "array",
   "description": "Matrix (2D array)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "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"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/numora-matrix-rank-computation-ccd5f769/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from numormo.vercel.app](https://www.zero.xyz/host/numormo.vercel.app/llms.txt)