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mirrored listing x402 eip155:8453

Carbon intensity of Great Britain's electricity grid from the official NESO Carbon Intensi

Carbon intensity of Great Britain's electricity grid from the official NESO Carbon Intensity API (CC BY 4.0), in half-hour periods with a low/moderate/high index. No params -> current national half-hour; ?horizon=fw24h|fw48h adds the forecast; ?region=1..17 (13=London) switches to a DNO region and includes the generation mix per fuel. 30-min upstream cadence, 30-min cache.

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2000 (raw units)
price
1
calls / 30d
1
unique payers
2026-08-27
updated

Provider

data.greeneris.io · discovered, not yet claimed by its owner

Payment (x402 accepts[])

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x6ab8efe305cce67daa48c97bde29c04402822dff",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "2000",
    "maxTimeoutSeconds": 300
  }
]

Output schema

{
  "bazaar": {
    "info": {
      "input": {
        "method": "GET",
        "queryParams": {
          "horizon": "fw24h",
          "region": "13"
        },
        "type": "http"
      },
      "output": {
        "example": {
          "count": 1,
          "periods": [
            {
              "forecast": 81,
              "from": "2026-07-14T05:30Z",
              "generation_mix": {
                "gas": 20.5,
                "nuclear": 8.1,
                "solar": 25,
                "wind": 34.2
              },
              "index": "low",
              "to": "2026-07-14T06:00Z"
            }
          ],
          "region": {
            "dno": "UKPN London",
            "name": "London",
            "regionid": 13
          },
          "scope": "regional",
          "source": "Carbon Intensity API, National Energy System Operator (NESO), CC BY 4.0",
          "unit": "gCO2/kWh"
        },
        "type": "json"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "method": {
              "enum": [
                "GET",
                "HEAD",
                "DELETE"
              ],
              "type": "string"
            },
            "queryParams": {
              "properties": {
                "horizon": {
                  "description": "Forecast window from now (optional)",
                  "enum": [
                    "fw24h",
                    "fw48h"
                  ],
                  "type": "string"
                },
                "region": {
                  "description": "DNO regionid 1-17 (optional; 13=London)",
                  "type": "string"
                }
              },
              "type": "object"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "example": {
              "type": "object"
            },
            "type": {
              "type": "string"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  }
}

Use it

curl

curl "https://data.greeneris.io/v1/gb/carbon"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://data.greeneris.io/v1/gb/carbon");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
res = httpx.get("https://data.greeneris.io/v1/gb/carbon")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Machine-readable

Everything on this page is also available as clean JSON at /resources/3934.json, and this resource appears in /discovery/resources and /discovery/search.