UK energy MCP server

A remote Model Context Protocol server at https://mcp.cleantechcontent.co.uk/mcp (Streamable HTTP, no login). It gives any agent six tools for UK electricity and gas tariffs, the Ofgem price cap and public EV charging prices, each answer carrying a source URL and a verified date.

Connect

Claude Desktop

Settings, Connectors, Add custom connector, and paste the URL. Or add this to claude_desktop_config.json:

{ "mcpServers": { "uk-energy": { "command": "npx", "args": ["-y", "mcp-remote", "https://mcp.cleantechcontent.co.uk/mcp"] } } }

Claude Code

claude mcp add --transport http uk-energy https://mcp.cleantechcontent.co.uk/mcp

Cursor, ChatGPT and others

Any client that supports remote MCP servers over Streamable HTTP can use the URL directly. Legacy clients that need a local process can use npx -y mcp-remote https://mcp.cleantechcontent.co.uk/mcp.

Tools

Tool	Use it when the user asks about	Inputs
`get_uk_energy_tariffs`	What a UK electricity or gas tariff costs, comparing suppliers, unit rates, standing charges, off-peak windows, exit fees, export (SEG) rates	`region`, `type`, `supplier`, `fuel`, `payment_method`, `include_unverified`, `limit`
`get_uk_ev_tariffs`	The cheapest home tariff for charging an electric car, overnight windows, smart-charging add-ons, hardware requirements	`region`, `supplier`, `include_unverified`
`get_ofgem_price_cap`	The current or next Ofgem price cap, the default tariff rate in a region, direct debit versus prepayment	`region`, `payment_method`, `fuel`, `period`, `include_history`
`get_ev_charging_prices`	What a public charging network charges per kWh, subscription and idle fees	`network`, `power_band`, `basis`, `include_unverified`, `limit`
`compare_ev_charging_cost`	What one charging session would cost across networks, which network is cheapest	`kwh`, `power_band`, `basis`
`get_data_freshness`	How current the data is; always free	none

Example prompts

"What is the Ofgem price cap for electricity in South Wales on prepayment?"
"Which EV tariff has the longest off-peak window in London, and what is the day rate?"
"Compare the cost of adding 30 kWh at a 50 kW rapid charger across UK networks."
"Is Octopus Agile cheaper than the cap on average this month in Yorkshire?"

Free tier and payment inside MCP

The first 25 tool calls a day from an address are free; get_data_freshness never counts. After that a tool returns an error result whose _meta["x402/error"] carries x402 payment requirements (USD 0.01 in USDC on Base). Clients built with the Cloudflare Agents SDK withX402Client helper, or any client that can sign x402 payments, retry automatically with _meta["x402/payment"]; the settled transaction is returned in _meta["x402/payment-response"]. Alternatively pass a credit or free API key on the connection as Authorization: Bearer <key> or ?key= on the URL. See pricing.

Registry and listings

Published in the official MCP Registry as uk.co.cleantechcontent/uk-energy-data. The same service is listed on Glama, Smithery, PulseMCP and mcp.so.