# Orders of Magnitude API – Matrix Endpoint

> Orders of Magnitude API – Matrix Endpoint is a paid API for AI agents from x402-api-production-5133.up.railway.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Provides data and AI services via the x402 micropayment protocol at the /ns/matrix path, accepting a string input and returning processed results

## Facts

- Endpoint: GET https://x402-api-production-5133.up.railway.app/ns/matrix
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/orders-of-magnitude-api-matrix-endpoint-d461fc96
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_25t5HMbQAdfJHQSvcxBeT

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 orders-of-magnitude-api-matrix-endpoint-d461fc96
```

Example prompt: Use the Orders of Magnitude matrix service to process this query and get back AI-powered data results: 'what are the top emerging trends in renewable energy?'

## When to prefer this

Choose this endpoint when you need to invoke the Orders of Magnitude AI/data service specifically at the /ns/matrix namespace using a text string input, and you are operating in an x402 micropayment context where per-call USDC billing is acceptable. Prefer this over generic REST APIs when the workflow requires trustless, on-chain micropayments for each query.

## Known failure modes

- Payment not authorized or insufficient USDC balance — x402 payment fails and request is rejected
- Missing required 'input' field — API returns a validation error
- Empty or malformed input string — may return an empty or error response
- Service unavailable on Railway deployment — upstream host down
- Rate limiting or quota exceeded — repeated calls in short succession may be throttled

## How this service works

Data and AI services via x402 payment protocol

## Output

An object returned by the matrix endpoint containing AI-processed or data-enriched output corresponding to the input string; the exact response structure is unspecified (empty schema), so results should be treated as variable JSON.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {}
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/orders-of-magnitude-api-matrix-endpoint-d461fc96/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-api-production-5133.up.railway.app](https://www.zero.xyz/host/x402-api-production-5133.up.railway.app/llms.txt)