# agent402.tools Electronvolts to Kilocalories Converter

> agent402.tools Electronvolts to Kilocalories 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 energy value from electronvolts (eV) to kilocalories (kcal) via a simple GET request.

## Facts

- Endpoint: GET https://agent402.tools/api/convert/electronvolts-to-kilocalories
- 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/agent402-tools-electronvolts-to-kilocalories-converter-214fc4af
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_AXBfzRxYsNEVEMs5zT7YR

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-electronvolts-to-kilocalories-converter-214fc4af
```

Example prompt: Can you convert 2500 electronvolts to kilocalories for me?

## When to prefer this

Use this endpoint when you need a quick, programmatic conversion from electronvolts (eV) to kilocalories (kcal), especially in scientific, physics, chemistry, or nutrition-adjacent contexts where energy unit bridging between atomic-scale and thermodynamic-scale units is needed.

## Known failure modes

- Missing 'value' query parameter returns an error
- Non-numeric or malformed value input causes a 400-level error
- Very large or very small values may cause precision issues
- Payment not processed leads to 402 Payment Required response

## How this service works

Convert electronvolts to kilocalories (energy). Pass ?value=N.

## Output

Returns the converted energy value in kilocalories corresponding to the provided electronvolt input, as a numeric result.

## 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-electronvolts-to-kilocalories-converter-214fc4af/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)