{
  "title": "Standby power cost calculator",
  "human_url": "https://happytails.ai/en/calculators/standby-power-cost-calculator/",
  "agent_url": "https://happytails.ai/agents/en/calculators/standby-power-cost-calculator/",
  "language": "en",
  "markdown_url": "https://happytails.ai/en/calculators/standby-power-cost-calculator.md",
  "content": "Standby power cost calculator\nCalculate a transparent home-energy estimate locally from the assumptions you enter.\nHow can we improve this tool?\nReport a problem or share an idea.\nPlease leave out private information. Your message and the tool name go to our team via PostHog.\nHow to use Standby power cost calculator\nEnter the energy assumptions and units.\nReview the calculation and assumptions.\nDownload or copy the complete result.\nUseful next steps\nAppliance electricity cost calculator\nBattery cycle cost calculator\nEv charging cost calculator\nTransparent energy estimate\nEvery result shows the assumptions it used. Check local tariffs, equipment specifications and utility statements before making a decision.",
  "content_format": "text/plain",
  "visibility": "public",
  "links": [
    {
      "name": "Appliance electricity cost calculator",
      "url": "https://happytails.ai/en/calculators/appliance-electricity-cost-calculator/"
    },
    {
      "name": "Battery cycle cost calculator",
      "url": "https://happytails.ai/en/calculators/battery-cycle-cost-calculator/"
    },
    {
      "name": "Ev charging cost calculator",
      "url": "https://happytails.ai/en/calculators/ev-charging-cost-calculator/"
    }
  ],
  "tool": {
    "id": "standby-power-cost-calculator",
    "category": "calculators",
    "built": true,
    "requirements": "Runs locally with bounded numeric inputs and returns a complete JSON result. Tariffs, efficiency and usage are not looked up.",
    "implementation": {
      "fields": [
        {
          "key": "watts",
          "label": "Standby power per device (W)",
          "value": 8,
          "type": "number",
          "min": 0,
          "step": "any"
        },
        {
          "key": "devices",
          "label": "Devices",
          "value": 3,
          "type": "number",
          "min": 1,
          "step": 1
        },
        {
          "key": "hoursPerDay",
          "label": "Hours per day",
          "value": 24,
          "type": "number",
          "min": 0,
          "step": "any",
          "max": 24
        },
        {
          "key": "daysPerYear",
          "label": "Days per year",
          "value": 365,
          "type": "number",
          "min": 0,
          "step": "any",
          "max": 366
        },
        {
          "key": "pricePerKwh",
          "label": "Price per kWh",
          "value": 0.3,
          "type": "number",
          "min": 0,
          "step": "any"
        }
      ],
      "input": false,
      "presentation": "metrics",
      "note": "Runs locally in your browser. Enter your own power, usage, efficiency and tariff assumptions; no live tariff lookup is performed. Results are estimates, not utility bills or engineering advice.",
      "example": {
        "input": "",
        "options": {
          "watts": 8,
          "devices": 3,
          "hoursPerDay": 24,
          "daysPerYear": 365,
          "pricePerKwh": 0.3
        }
      },
      "experience": {
        "automatic": false,
        "single": false,
        "inputMaxLength": 1000000,
        "inputMode": "text",
        "label": "Energy assumptions JSON",
        "placeholder": "{\n  \"watts\": 8,\n  \"devices\": 3,\n  \"hoursPerDay\": 24,\n  \"daysPerYear\": 365,\n  \"pricePerKwh\": 0.3\n}",
        "help": "Use the documented numeric fields. Up to 1,000,000 characters. Review the settings before running.",
        "action": null
      },
      "mode": "explicit",
      "interactive": false
    },
    "execution": "Browser interface",
    "api": null,
    "browser_agent": {
      "supported": true,
      "name": "run_current_tool",
      "discovery": "WebMCP on the human page in a supporting browser",
      "verification": "See audit/API-AUDIT.md; availability is not verification"
    }
  },
  "markdown": "# Standby power cost calculator\n\n- Human page: https://happytails.ai/en/calculators/standby-power-cost-calculator/\n- Markdown: https://happytails.ai/en/calculators/standby-power-cost-calculator.md\n- Structured JSON: https://happytails.ai/agents/en/calculators/standby-power-cost-calculator/index.json\n- Visibility: public\n\n## Tool capabilities\n\n| Property | Value |\n| --- | --- |\n| Tool ID | `standby-power-cost-calculator` |\n| Category | calculators |\n| Implementation | Registered implementation. Registration alone is not a production-quality guarantee. |\n| Browser execution | Use the visible action or interactive controls. |\n| Browser processing | Browser; see tool notes for network behavior. |\n| HTTP API | Not callable through HTTP. |\n| Browser-agent interface | run_current_tool |\n\n### Implementation notes\n\nRuns locally in your browser. Enter your own power, usage, efficiency and tariff assumptions; no live tariff lookup is performed. Results are estimates, not utility bills or engineering advice.\n\n### Inputs and settings\n\nNo free-text input is required. Use the file inputs and/or settings below.\n\n| Setting | Meaning | Control type | Default | Constraints |\n| --- | --- | --- | --- | --- |\n| `watts` | Standby power per device (W) | number | 8 | min=0 step=any |\n| `devices` | Devices | number | 3 | min=1 step=1 |\n| `hoursPerDay` | Hours per day | number | 24 | min=0 max=24 step=any |\n| `daysPerYear` | Days per year | number | 365 | min=0 max=366 step=any |\n| `pricePerKwh` | Price per kWh | number | 0.3 | min=0 step=any |\n\n### Browser-agent workflow\n\n1. Open the human page in a browser that supports WebMCP.\n2. Discover the interface exposed by that page; use its actual schema.\n3. Select files on the page first when the tool requires files.\n4. Call `run_current_tool` with valid input and settings.\n5. Inspect the returned result or error and the displayed output. Retrieve files from the displayed download links.\n\nCalls do not automatically copy or download results. Browser permissions still apply. Interface availability alone is not proof of successful execution.\n\n### Planning specification\n\nRuns locally with bounded numeric inputs and returns a complete JSON result. Tariffs, efficiency and usage are not looked up.\n\nThis describes intended requirements. Use the implementation notes, interface schema and observed output to determine current support.\n\n### Complete machine-readable capability record\n\n```json\n{\n  \"id\": \"standby-power-cost-calculator\",\n  \"category\": \"calculators\",\n  \"built\": true,\n  \"requirements\": \"Runs locally with bounded numeric inputs and returns a complete JSON result. Tariffs, efficiency and usage are not looked up.\",\n  \"implementation\": {\n    \"fields\": [\n      {\n        \"key\": \"watts\",\n        \"label\": \"Standby power per device (W)\",\n        \"value\": 8,\n        \"type\": \"number\",\n        \"min\": 0,\n        \"step\": \"any\"\n      },\n      {\n        \"key\": \"devices\",\n        \"label\": \"Devices\",\n        \"value\": 3,\n        \"type\": \"number\",\n        \"min\": 1,\n        \"step\": 1\n      },\n      {\n        \"key\": \"hoursPerDay\",\n        \"label\": \"Hours per day\",\n        \"value\": 24,\n        \"type\": \"number\",\n        \"min\": 0,\n        \"step\": \"any\",\n        \"max\": 24\n      },\n      {\n        \"key\": \"daysPerYear\",\n        \"label\": \"Days per year\",\n        \"value\": 365,\n        \"type\": \"number\",\n        \"min\": 0,\n        \"step\": \"any\",\n        \"max\": 366\n      },\n      {\n        \"key\": \"pricePerKwh\",\n        \"label\": \"Price per kWh\",\n        \"value\": 0.3,\n        \"type\": \"number\",\n        \"min\": 0,\n        \"step\": \"any\"\n      }\n    ],\n    \"input\": false,\n    \"presentation\": \"metrics\",\n    \"note\": \"Runs locally in your browser. Enter your own power, usage, efficiency and tariff assumptions; no live tariff lookup is performed. Results are estimates, not utility bills or engineering advice.\",\n    \"example\": {\n      \"input\": \"\",\n      \"options\": {\n        \"watts\": 8,\n        \"devices\": 3,\n        \"hoursPerDay\": 24,\n        \"daysPerYear\": 365,\n        \"pricePerKwh\": 0.3\n      }\n    },\n    \"experience\": {\n      \"automatic\": false,\n      \"single\": false,\n      \"inputMaxLength\": 1000000,\n      \"inputMode\": \"text\",\n      \"label\": \"Energy assumptions JSON\",\n      \"placeholder\": \"{\\n  \\\"watts\\\": 8,\\n  \\\"devices\\\": 3,\\n  \\\"hoursPerDay\\\": 24,\\n  \\\"daysPerYear\\\": 365,\\n  \\\"pricePerKwh\\\": 0.3\\n}\",\n      \"help\": \"Use the documented numeric fields. Up to 1,000,000 characters. Review the settings before running.\",\n      \"action\": null\n    },\n    \"mode\": \"explicit\",\n    \"interactive\": false\n  },\n  \"execution\": \"Browser interface\",\n  \"api\": null,\n  \"browser_agent\": {\n    \"supported\": true,\n    \"name\": \"run_current_tool\",\n    \"discovery\": \"WebMCP on the human page in a supporting browser\",\n    \"verification\": \"See audit/API-AUDIT.md; availability is not verification\"\n  }\n}\n```\n\n## Page guide\n\nCalculate a transparent home-energy estimate locally from the assumptions you enter.\n\nHow can we improve this tool?\n\nReport a problem or share an idea.\n\nPlease leave out private information. Your message and the tool name go to our team via PostHog.\n\n### How to use Standby power cost calculator\n\n1. Enter the energy assumptions and units.\n2. Review the calculation and assumptions.\n3. Download or copy the complete result.\n\n## Useful next steps\n\n- [Appliance electricity cost calculator](https://happytails.ai/en/calculators/appliance-electricity-cost-calculator/) ([Markdown](https://happytails.ai/en/calculators/appliance-electricity-cost-calculator.md))\n\n- [Battery cycle cost calculator](https://happytails.ai/en/calculators/battery-cycle-cost-calculator/) ([Markdown](https://happytails.ai/en/calculators/battery-cycle-cost-calculator.md))\n\n- [Ev charging cost calculator](https://happytails.ai/en/calculators/ev-charging-cost-calculator/) ([Markdown](https://happytails.ai/en/calculators/ev-charging-cost-calculator.md))\n\n## Transparent energy estimate\n\nEvery result shows the assumptions it used. Check local tariffs, equipment specifications and utility statements before making a decision.\n"
}