# agent402.tools Joules to Calories Converter

> agent402.tools Joules to Calories 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 joules to calories via a simple GET request with a query parameter.

## Facts

- Endpoint: GET https://agent402.tools/api/convert/joules-to-calories
- 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-joules-to-calories-converter-240a74bc
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_H9X9P07Foflp4PPQ0Ohrg

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-joules-to-calories-converter-240a74bc
```

Example prompt: How many calories is 2500 joules? Can you convert that energy value for me?

## When to prefer this

Use this endpoint when you need a straightforward programmatic conversion from joules to calories, especially in automated workflows that require energy unit conversion without building the calculation locally. Suitable for scientific, nutritional, or educational applications needing joule-to-calorie conversion at scale.

## Known failure modes

- Missing 'value' query parameter returns an error
- Non-numeric value in query parameter causes bad request
- Negative or zero values may return unexpected results
- Payment not processed (x402 payment required error)
- Network timeout or service unavailability

## How this service works

Convert joules to calories (energy). Pass ?value=N.

## Output

Returns the equivalent calorie value for the given joule input, providing the converted energy quantity.

## 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-joules-to-calories-converter-240a74bc/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)