# PrimeAPI Weight Converter

> PrimeAPI Weight Converter is a paid API for AI agents from prime-api-seven.vercel.app, paid per call via x402, $0.07817/call, status unknown (last checked 2026-09-14).

Converts weight values between different units of measurement (e.g. kilograms, pounds, ounces, grams)

## Facts

- Endpoint: POST https://prime-api-seven.vercel.app/api/tools/convert/weight
- Price: $0.07817/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/primeapi-weight-converter-ff9e9228
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_IhziEILCDchxvsazoJ6yN

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 primeapi-weight-converter-ff9e9228 -d '<json body>'
```

Example prompt: Convert 185 pounds to kilograms for me.

## When to prefer this

Use this endpoint when you need a quick, pay-per-call weight unit conversion without managing API keys. Prefer it over general-purpose conversion APIs when operating in an x402/USDC micropayment context on Base, or when integrating within an agent workflow that already uses PrimeAPI for other tool calls.

## Known failure modes

- Unrecognized unit names return an error or null result
- Missing query input returns a 400 bad request
- Unsupported unit pair may return no conversion
- Non-numeric weight values in query cause parsing errors
- Service unavailability returns 402 or 5xx error

## How this service works

Crypto, AI, Social Media, Finance, Weather, Tools &amp; more. Pay per call in USDC on Base. No API keys.

## Output

Returns the converted weight value in the requested target unit, along with relevant conversion details such as the original value, source unit, target unit, and the numeric result.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "query": {
   "type": "string",
   "description": "Search query or input parameter"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "description": "API response data"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/primeapi-weight-converter-ff9e9228/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from prime-api-seven.vercel.app](https://www.zero.xyz/host/prime-api-seven.vercel.app/llms.txt)