# Numora Matrix Rank Computation

> Numora Matrix Rank Computation 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 rank of a matrix (the number of linearly independent rows or columns)

## Facts

- Endpoint: POST https://numormor.netlify.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-135b31fd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_SUBEVgpOzNZyVXI4pxh9H

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-135b31fd -d '<json body>'
```

Example prompt: What's the rank of this matrix: [[1,2,3],[4,5,6],[7,8,9]]? I need to know how many linearly independent rows it has.

## When to prefer this

Use this endpoint when you need a fast, self-contained matrix rank computation with no external dependencies and micropayment billing per call. Ideal for AI agents that need deterministic mathematical results without setting up a local linear algebra library. Prefer when you want pay-per-use pricing on Base via x402 rather than a subscription-based math service.

## Known failure modes

- Missing required 'A' field returns validation error
- Non-numeric values in matrix array cause computation failure
- Non-rectangular (jagged) matrix array may cause error
- Empty matrix or empty rows return error or zero rank
- Payment failure via x402 micropayment returns 402 response

## 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' (human-readable string describing what was computed, e.g. 'Rank of 3x3 matrix is 2').

## 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-135b31fd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from numormor.netlify.app](https://www.zero.xyz/host/numormor.netlify.app/llms.txt)