# x402-toolbox Unit Converter

> x402-toolbox Unit Converter is a paid API for AI agents from x402-toolbox.shablony-pro.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-02).

Converts a value from one unit of measurement to another (e.g. miles to kilometers, Fahrenheit to Celsius) via a pay-per-call API over x402.

## Facts

- Endpoint: GET https://x402-toolbox.shablony-pro.workers.dev/math/unit-converter?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-toolbox-unit-converter-263bdc84
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_jsY4outqP9HtCMjDCxgFw

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 x402-toolbox-unit-converter-263bdc84
```

Example prompt: Can you convert 72 degrees Fahrenheit to Celsius for me?

## When to prefer this

Choose this endpoint when you need a lightweight, no-signup, pay-per-call unit conversion that works autonomously in an AI agent pipeline using x402/USDC micropayments on Base — ideal when you want deterministic math results without managing API keys or rate limits.

## Known failure modes

- Unsupported or unrecognized unit type returns an error
- Missing schema/value parameter causes a bad request response
- Payment failure (insufficient USDC balance) results in a 402 response and no conversion
- Incompatible unit dimensions (e.g. meters to kilograms) may return an error or unexpected result

## How this service works

309 deterministic pay-per-call tools for AI agents over x402 (USDC, Base). No signup, no API key: the payment is the identity.

## Output

A JSON object with ok: true and the converted value, confirming payment was accepted and the unit conversion was computed deterministically.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "paid": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-toolbox-unit-converter-263bdc84/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-toolbox.shablony-pro.workers.dev](https://www.zero.xyz/host/x402-toolbox.shablony-pro.workers.dev/llms.txt)