# UK Tons to Grains Mass Converter

> UK Tons to Grains Mass Converter is a paid API for AI agents from agent402.tools, paid per call via x402, $0.001/call, status down (last checked 2026-09-15).

Converts a numeric mass value from UK tons (long tons) to grains via a simple query parameter.

## Facts

- Endpoint: GET https://agent402.tools/api/convert/uk-tons-to-grains
- Price: $0.001/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/uk-tons-to-grains-mass-converter-65d73baf
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_RAhN3PP3Fsj_tgXqobMGJ

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 uk-tons-to-grains-mass-converter-65d73baf
```

Example prompt: How many grains are in 3.5 UK tons? Can you convert that for me?

## When to prefer this

Use this endpoint when you specifically need to convert UK long tons (2240 lbs) to grains and want a simple, single-call REST API without building your own conversion logic. Ideal for lightweight unit conversion in automated pipelines.

## Known failure modes

- Missing required 'value' query parameter returns an error
- Non-numeric value string causes a parsing or validation error
- Extremely large or small numbers may cause overflow or precision issues
- Payment not sent or insufficient USDC returns 402 Payment Required

## How this service works

Convert uk tons to grains (mass). Pass ?value=N.

## Output

Returns the converted mass value expressed in grains corresponding to the input UK tons quantity.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {
   "value": "2.5"
  }
 }
}
```

## 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/uk-tons-to-grains-mass-converter-65d73baf/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)