# agent402.tools Micrograms to Stones Converter

> agent402.tools Micrograms to Stones Converter is a paid API for AI agents from agent402.tools, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Converts a numeric mass value from micrograms (µg) to stones (st) via a simple GET request with a query parameter.

## Facts

- Endpoint: GET https://agent402.tools/api/convert/micrograms-to-stones
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent402-tools-micrograms-to-stones-converter-f85b28c1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4RQLSKbBPsbbZAECgdEXB

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 agent402-tools-micrograms-to-stones-converter-f85b28c1
```

Example prompt: Can you convert 750000000 micrograms to stones for me?

## When to prefer this

Use this endpoint when you specifically need to convert a mass measurement from micrograms to stones, especially in scientific, pharmaceutical, or health contexts where both very small metric units and imperial stones units are involved. Prefer this over manual computation when high accuracy is needed at low cost.

## Known failure modes

- Missing required query parameter 'value' returns an error
- Non-numeric or malformed value causes a bad request error
- Extremely large or small values may produce precision edge cases
- Payment failure or missing x402 payment header results in 402 response

## How this service works

Convert micrograms to stones (mass). Pass ?value=N.

## Output

Returns the converted mass value expressed in stones corresponding to the input micrograms value.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "value"
     ],
     "properties": {
      "value": {
       "type": "string",
       "description": "Numeric value to convert"
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent402-tools-micrograms-to-stones-converter-f85b28c1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agent402.tools](https://www.zero.xyz/host/agent402.tools/llms.txt)