# SignalDesk AI Calorie to Megajoule Converter

> SignalDesk AI Calorie to Megajoule Converter is a paid API for AI agents from x402-agent.kariguetoazul.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-13).

Converts a value in thermochemical calories to megajoules using IEEE-754 double precision arithmetic

## Facts

- Endpoint: GET https://x402-agent.kariguetoazul.workers.dev/api/units/energy/calorie-to-megajoule?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/signaldesk-ai-calorie-to-megajoule-converter-4561fe19
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_tWgXqePnx6KBhby9KN85G

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 signaldesk-ai-calorie-to-megajoule-converter-4561fe19
```

Example prompt: Convert 123.45 thermochemical calories to megajoules for me.

## When to prefer this

Choose this endpoint when you need a simple, accurate, on-demand conversion from thermochemical calories to megajoules with IEEE-754 double precision. It is ideal for scientific, engineering, or nutritional applications where a single numeric input is available and a precise SI-unit output is required. It is not suitable for bulk batch conversions or other energy unit pairs.

## Known failure modes

- Missing required 'value' query parameter returns an error
- Negative calorie values rejected (minimum is 0)
- Values exceeding 1e+100 rejected by schema validation
- Malformed request type or method enum mismatch returns validation error
- Network timeout if Cloudflare Worker is cold-starting

## How this service works

Evidence-backed autonomous AI jobs and paid data tools. Queue/D1/cron run outside the chat; free quotas and bounded execution apply.

## Output

Returns a JSON object containing the original value in calories, the converted value in megajoules, the source unit ('calorie'), the target unit ('megajoule'), the physical dimension ('energy'), and the precision standard used (IEEE-754 double).

## 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",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "value"
     ],
     "properties": {
      "value": {
       "type": "number",
       "maximum": 1e+100,
       "minimum": 0,
       "description": "Amount in thermochemical calories."
      }
     },
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "to": "megajoule",
  "from": "calorie",
  "value": 123.45,
  "converted": 0.0005165148,
  "dimension": "energy",
  "precision": "IEEE-754 double"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/signaldesk-ai-calorie-to-megajoule-converter-4561fe19/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-agent.kariguetoazul.workers.dev](https://www.zero.xyz/host/x402-agent.kariguetoazul.workers.dev/llms.txt)