# Cleantech Content UK Energy Data API

> Verified UK electricity and gas tariff data, the Ofgem price cap by region, and public EV charging prices by network, for AI agents. REST API at https://data.cleantechcontent.co.uk/v1 and MCP server at https://mcp.cleantechcontent.co.uk/mcp. Every value carries source_url and verified_at. Free tier of 25 calls a day (100 with a free key), then USD 0.01 per call via x402 (USDC on Base) or Stripe Machine Payments, or prepaid packs.

Units: pence per kWh and pence per day, VAT included where it applies, GB domestic. Regions are GSP letters A to P (no I or O) or GB. Nothing is estimated: rows are verified or marked unverified and hidden by default.

## Docs

- [Documentation index](https://data.cleantechcontent.co.uk/docs/): envelope, units, keys, caching
- [REST API reference](https://data.cleantechcontent.co.uk/docs/rest/): every endpoint, filters, paying per call
- [MCP server](https://data.cleantechcontent.co.uk/docs/mcp/): connection strings and the six tools
- [EV charging price API](https://data.cleantechcontent.co.uk/docs/ev-charging/): networks, power bands, pricing bases, session comparison
- [Data, sources and freshness](https://data.cleantechcontent.co.uk/docs/data/): coverage, verification rules, region table, changelog
- [Pricing](https://data.cleantechcontent.co.uk/pricing/)
- [Terms and data licence](https://data.cleantechcontent.co.uk/licence/)

## Machine-readable

- [OpenAPI 3.1](https://data.cleantechcontent.co.uk/openapi.json)
- [Agent card](https://data.cleantechcontent.co.uk/.well-known/agent-card.json)
- [Freshness endpoint](https://data.cleantechcontent.co.uk/v1/meta/status)
- [Allowed filter values](https://data.cleantechcontent.co.uk/v1/meta/enums)

## Quick examples

- Ofgem cap, Southern England, direct debit: GET /v1/tariffs/cap?region=H&payment_method=direct_debit
- EV tariffs in London: GET /v1/tariffs?region=C&type=ev_tou
- Cost of 40 kWh at an ultra-rapid charger: GET /v1/charging/compare?kwh=40&power_band=dc_ultra_150kw_plus
- MCP tools: get_uk_energy_tariffs, get_uk_ev_tariffs, get_ofgem_price_cap, get_ev_charging_prices, compare_ev_charging_cost, get_data_freshness