# SignalDesk AI – Electronvolt to Joule Converter

> SignalDesk AI – Electronvolt to Joule 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 numeric value in electronvolts (eV) to joules (J) using IEEE-754 double precision arithmetic.

## Facts

- Endpoint: GET https://x402-agent.kariguetoazul.workers.dev/api/units/energy/electronvolt-to-joule?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-electronvolt-to-joule-converter-ae29bad8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-07y7MzT3g_fEkvGwIW_s

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-electronvolt-to-joule-converter-ae29bad8
```

Example prompt: Convert 123.45 electronvolts to joules for me.

## When to prefer this

Choose this endpoint when you need a precise, programmatic electronvolt-to-joule conversion with IEEE-754 double precision, especially in agent pipelines that handle physics, chemistry, or material science data requiring SI energy units. Prefer it over manual calculation or general LLM reasoning when numerical precision is critical.

## Known failure modes

- Missing or non-numeric 'value' query parameter returns a validation error
- Negative values are rejected (minimum is 0 per schema)
- Values exceeding 1e+100 are out of range and rejected
- Non-GET HTTP methods may return 405 Method Not Allowed
- Payment not fulfilled (x402) results in 402 Payment Required before conversion is performed

## 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 with the original value and unit (electronvolt), the converted value in joules (IEEE-754 double precision), and metadata fields including the dimension ('energy') and precision label.

## 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 electronvolts."
      }
     },
     "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": "joule",
  "from": "electronvolt",
  "value": 123.45,
  "converted": 1.977887054673e-17,
  "dimension": "energy",
  "precision": "IEEE-754 double"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/signaldesk-ai-electronvolt-to-joule-converter-ae29bad8/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)