MCP server

Carbon

io.github.pipeworx-io/carbon

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

Carbon MCP — UK Carbon Intensity API (free, no auth)

Website Source

At a glance

Type

MCP server

Publisher

pipeworx.io (verified by the MCP Registry)

Status

Working at last check

Tools

47

Token cost

About 26,859 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http carbon https://gateway.pipeworx.io/carbon/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.carbon]
url = "https://gateway.pipeworx.io/carbon/mcp"

Gemini CLI

{"mcpServers":{"carbon":{"httpUrl":"https://gateway.pipeworx.io/carbon/mcp"}}}

Cursor

{"mcpServers":{"carbon":{"url":"https://gateway.pipeworx.io/carbon/mcp"}}}

VS Code

{"servers":{"carbon":{"type":"http","url":"https://gateway.pipeworx.io/carbon/mcp"}}}

Antigravity

agy mcp add carbon https://gateway.pipeworx.io/carbon/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"carbon","server_url":"https://gateway.pipeworx.io/carbon/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"carbon","server_url":"https://gateway.pipeworx.io/carbon/mcp"}

Tools

• get_generation_mix ~81 tokens
  Check current UK electricity grid composition by source percentage (gas, coal, wind, solar, nuclear, hydro, biomass, imports). Use to understand real-time grid energy mix.
• get_intensity ~87 tokens
  Check current UK electricity carbon intensity. Returns gCO2/kWh (forecast and actual) plus intensity level (very low to very high). Use to schedule energy-intensive tasks during low-carbon periods.
• get_intensity_by_date ~126 tokens
  Get UK electricity carbon intensity for every 30-minute period on a specific date (e.g., "2024-01-15"). Returns gCO2/kWh forecast and actual. Use to identify lowest-carbon hours.
• get_intensity_factors ~76 tokens
  Carbon intensity factors (gCO2/kWh) per fuel type used in the headline figures — e.g. Coal 937, Gas (Combined Cycle) 394, Nuclear 0, Wind 0, Solar 0.
• get_regional_intensity ~186 tokens
  Carbon intensity (forecast gCO2/kWh + index band) and generation mix for a specific Great Britain region. Pass "postcode" (UK outcode — first half of a postcode, e.g. "RG10") or "regionid" (1–17, e.g. 13 = London). Omit both for all regions at the current half-hour. Regional figures are forecast-onl

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