Trusted calculation infrastructure for apps and AI agents

curl -X POST 'https://www.calculatorx.com/api/v1/calc/amps-to-va' \
  -H 'Content-Type: application/json' \
  -H 'CalculatorX-Spec-Version: 1.4.3' \
  -d '{"inputs":{"mode":"amps-va","primary":12,"volts":230,"phase":"single"}}'

const res = await fetch('https://www.calculatorx.com/api/v1/calc/amps-to-va', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json', 'CalculatorX-Spec-Version': '1.4.3' },
  body: JSON.stringify({
  "inputs": {
    "mode": "amps-va",
    "primary": 12,
    "volts": 230,
    "phase": "single"
  }
})
});
const data = await res.json();
console.log(data.result_detail, data.formula);

import json, urllib.request

req = urllib.request.Request(
    'https://www.calculatorx.com/api/v1/calc/amps-to-va',
    data=json.dumps({
  "inputs": {
    "mode": "amps-va",
    "primary": 12,
    "volts": 230,
    "phase": "single"
  }
}).encode(),
    headers={'Content-Type': 'application/json', 'CalculatorX-Spec-Version': '1.4.3'},
    method='POST',
)
with urllib.request.urlopen(req) as r:
    print(json.load(r))

curl -sS -X POST 'https://www.calculatorx.com/mcp' \
  -H 'Content-Type: application/json' \
  -H 'MCP-Protocol-Version: 2026-07-28' \
  -H 'Mcp-Method: tools/call' \
  -H 'Mcp-Name: execute_calculation' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"execute_calculation","arguments":{"capability_id":"electrical.apparent_power","inputs":{"mode":"amps-va","primary":12,"volts":230,"phase":"single"},"calculation_version":"1.4.3"},"_meta":{"io.modelcontextprotocol/protocolVersion":"2026-07-28","io.modelcontextprotocol/clientInfo":{"name":"calculatorx-docs-example","version":"1.0.0"},"io.modelcontextprotocol/clientCapabilities":{}}}}'

{
  "result": 2760,
  "result_detail": {
    "value": 2760,
    "unit": "VA",
    "formatted": "2,760 VA"
  },
  "formula": {
    "expression": "S = V_RMS × I_RMS"
  },
  "calculation_version": "1.4.3",
  "verification": {
    "engine_tested": true,
    "expert_reviewed": false
  }
}

Trimmed success body for 12 A × 230 V → 2,760 VA. Full responses also include assumptions, warnings, evidence, and the resolved engine. verification.engine_tested is not expert review.