# Numora Matrix Multiplication API

> Numora Matrix Multiplication API is a paid API for AI agents from numomo.vercel.app, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-15).

Multiplies two matrices (2D arrays) and returns the resulting product matrix with a human-readable computation description.

## Facts

- Endpoint: POST https://numomo.vercel.app/api/matrix/multiply
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/numora-matrix-multiplication-api-b1e0c354
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_WeQDQ6iA6o3osCgFj88UP

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-multiplication-api-b1e0c354 -d '<json body>'
```

Example prompt: Can you multiply these two matrices for me? Matrix A is [[1,2],[3,4]] and Matrix B is [[5,6],[7,8]].

## When to prefer this

Choose this endpoint when an AI agent needs a fast, dependency-free, pure-math matrix multiplication computation without spinning up a local numerical library like NumPy. Ideal for agentic workflows that require linear algebra as a subroutine (e.g. graphics transforms, ML weight operations, economic modeling) and want a lightweight, pay-per-use microservice via x402 micropayments on Base. Prefer it over general-purpose code execution endpoints when you need a predictable, auditable, single-purpose math result.

## Known failure modes

- Incompatible matrix dimensions (columns of A must equal rows of B) — likely returns an error or unsuccessful response
- Missing required fields A or B — 400-level validation error
- Non-numeric values in matrix arrays — computation failure
- Non-2D array input — schema validation error
- Network or serverless cold-start timeout on Vercel — transient 5xx error

## 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 (always true on success), a 'result' object containing the product matrix, and a 'computation' string that describes in plain English what was calculated (e.g. 'Multiplied a 2x2 matrix by a 2x2 matrix to produce a 2x2 result').

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "A",
  "B"
 ],
 "properties": {
  "A": {
   "type": "array",
   "description": "Matrix (2D array)"
  },
  "B": {
   "type": "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-multiplication-api-b1e0c354/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from numomo.vercel.app](https://www.zero.xyz/host/numomo.vercel.app/llms.txt)