# Saylor Innovations UK Grid Carbon Intensity

> Saylor Innovations UK Grid Carbon Intensity is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-30).

Returns live Great Britain grid carbon intensity in gCO2/kWh, generation mix breakdown, renewable and fossil share percentages, and the greenest 3-hour window in the next 24 hours

## Facts

- Endpoint: GET https://saylorinnovations.com/api/grid/uk-carbon?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-30
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/saylor-innovations-uk-grid-carbon-intensity-78d9775a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_LI7mzqjq9PsFUWhgyZPLr

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 saylor-innovations-uk-grid-carbon-intensity-78d9775a
```

Example prompt: What's the current carbon intensity of the Great Britain electricity grid right now, and when is the greenest 3-hour window to run energy-heavy tasks in the next 24 hours?

## When to prefer this

Choose this endpoint when you need live Great Britain grid carbon data including intensity, generation mix, and a forward-looking greenest window — all in a single call. Prefer this over raw National Grid ESO APIs when you want a clean, paid, agent-ready JSON response without handling authentication or data normalization yourself.

## Known failure modes

- Upstream data source unavailable — may return stale or null intensity values
- Network timeout if the National Grid ESO data feed is delayed
- Rate limiting or payment failure for the x402 micropayment ($0.01 USDC per call)
- Partial data if generation mix breakdown is temporarily unavailable from source

## How this service works

Great Britain grid carbon intensity - live gCO2/kWh, generation mix, renewable and fossil share, plus the greenest 3-hour window in the next 24 hours

## Output

A JSON object containing the current carbon intensity value in gCO2/kWh, generation mix array (fuel type and percentage), renewables percentage, low-carbon percentage, fossil fuel percentage, the time range of the reading, the data source, and a next_24h forecast object identifying the greenest 3-hour window

## 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"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object",
     "required": [
      "intensity",
      "generation_mix"
     ],
     "properties": {
      "to": {
       "type": [
        "string",
        "null"
       ],
       "description": "End of the range"
      },
      "from": {
       "type": [
        "string",
        "null"
       ],
       "description": "Start of the range"
      },
      "note": {
       "type": [
        "string",
        "null"
       ],
       "description": "Caveat or context for reading the result"
      },
      "region": {
       "type": "string",
       "description": "Region"
      },
      "source": {
       "type": [
        "string",
        "null"
       ],
       "description": "Data source the values come from"
      },
      "next_24h": {
       "type": [
        "object",
        "null"
       ],
       "description": "Forecast summary for the next 24 hours"
      },
      "intensity": {
       "type": "object"
      },
      "checked_at": {
       "type": [
        "string",
        "null"
       ],
       "description": "Time the check was run (UTC)"
      },
      "fossil_pct": {
       "type": "number",
       "description": "Fossil, as a percentage"
      },
      "generation_mix": {
       "type": "array",
       "items": {
        "type": "object",
        "properties": {
         "pct": {
          "type": "number"
         },
         "fuel": {
          "type": "string"
         }
        }
       },
       "description": "Generation mix"
      },
      "low_carbon_pct": {
       "type": "number",
       "description": "Low carbon, as a percentage"
      },
      "renewables_pct": {
       "type": "number",
       "description": "Renewables, as a percentage"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/saylor-innovations-uk-grid-carbon-intensity-78d9775a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from saylorinnovations.com](https://www.zero.xyz/host/saylorinnovations.com/llms.txt)