"MCP servers that don't require API keys" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
DC Hub is the live data layer for data-center siting that agents can query and cite. Its Data Center Power Index (DCPI) scores where data centers can get grid power across 300+ markets daily. Also 330,000+ mapped power, grid, gas and fiber assets. 94 MCP tools at https://dchub.cloud/mcp plus a REST API at https://dchub.cloud/api/v1. Free tier needs no key; paid plans: dchub.cloud/pricing.
Forecasts, official weather alerts, air quality, 20 years of history, and PV and wind production, via the Meteosource API. Hosted, with your own API key.
UK solar PV and heat pump calculators that follow the published MCS methods. Open, no key.
Estimates the water and energy footprint of AI use – chat prompts, agent sessions from token counts, and everyday comparisons – from a published, versioned methodology with sources. Pure arithmetic, no API key; every result states its boundary and assumptions.
Polish energy performance certificates: pricing, requirements, order, documents, payment link
Find the cheapest EV charging stations in France, Benelux, and Denmark based on your specific car and charging cards.
US ISO interconnection queues and cited energy data. 25 free queries, then $49/mo or $490/yr.
Free calculators with sources: electricity bills (KR/TW/PH/JP), Korea taxi fares, tax refunds.
Free, no-key calculators with sources: household electricity bills and LED savings for Korea (KEPCO), Taiwan (Taipower), the Philippines (Meralco, updated monthly) and Japan (TEPCO); Seoul/Busan taxi fares, tourist tax refunds and trip budgets for Korea; Korean tax and education math. 19 read-only tools using the same rate tables as kwhmate.com, koreasurvivalkit.com and gyesanmate.com. Results cite date and source; nothing is stored.
Sourced carbon emission factors + audit-traced calculations an AI can cite.
Real-time electricity prices, carbon intensity, and energy analytics for 41+ zones across Europe, GB, US, and Australia. Query live prices, compare zones, check gas storage, get green scores, and access advanced analytics via MCP.
Operate a network of EV charge points over OCPP: status, sessions, tariffs, prices, remote commands
Real-time electricity prices for AI agents. 40+ countries, 100+ zones. No auth required.
Search open jobs in grid, nuclear, renewables, storage and data centers. Read-only, no login.
Browse and query the EIA API v2 — electricity, petroleum, natural gas, coal, forecasts via MCP.
Live Irish heating oil, green diesel and road diesel prices by county, plus local oil suppliers.
Solar and home energy discovery: estimates, incentive sources, guides and contractor options.
Carbon MCP — UK Carbon Intensity API (free, no auth)
111 pay-per-call agent tools: logistics, shipping, trade and energy data tools. x402
Live day-ahead electricity prices for 40+ European markets, all-in with taxes and VAT.
