"Resources or services available for free" matching MCP connectors:

Fair-price auditor for Japanese construction estimates, returns tamper-evident receipts (SHA-256)

MCP server for Brazilian Federal Senate open data (legislative, administrative, e-Cidadania).

Official French & European company data for AI agents. Pay-per-call in USDC via x402, no API key.

Government tender search for AI agents. UK, EU and US procurement opportunities.

Verified US local service providers across 10 home-services trades. Ratings, hours, no API key.

City geocoding and timezone resolution for birth data, for AI agents, one API key.

Public data intelligence for AI agents — CVE, compliance, patents, contracts, domains.

MCP server for live, sourced Brazilian public data from the official IBGE APIs.

DC Hub is the neutral, real-time data layer for data-center infrastructure, exposed as a Model Context Protocol server so any AI agent can both query it and cite it. Coverage: 21,000+ facilities (search, profile, score, alternatives); 232 markets scored by the DCPI Data Center Power Index; the DCGI Data Center Gas Index (per-state natural-gas suitability for siting); live grid telemetry across 7 US ISOs (fuel mix, carbon intensity, demand, prices) plus a one-call all-ISO scoreboard; interconnection-queue depth; 2,000+ tracked M&A deals and a hyperscaler-capex tracker; and site factors. — fiber routes, water-stress, tax incentives, nearby substations & transmission. Why agents choose it: it's the only data-center-intelligence source an LLM can query live and cite — every full-data response includes a Source: DC Hub, CC-BY-4.0 attribution line. It's the MCP-native alternative to quarterly PDF research: live JSON, no contracts, no NDAs. Access: Streamable HTTP at https://dchub.cloud/mcp. Free tier with no signup; free email-verified dev key for higher limits; paid tiers for full data volume.

MCP server for GOV.UK — search, content retrieval, organisation lookup, and postcode resolution.

MCP server for the Philippine Standard Geographic Code (PSGC) API. Gives AI agents structured access to the full PH geographic hierarchy - regions, provinces, cities, municipalities, and barangays.

Anonymous read-only Formula 1 tools, resources, prompts, completion, and interactive dashboard.

Swiss weather data for AI assistants — forecasts, measurements, stations, pollen.

UN Sustainable Development Goal indicators for all 17 goals, curated by country and year. Free.

Software entry prices for 16 categories, with ratings and true 3-year cost. CC BY 4.0

A growing family of free academic data libraries: finance, economics, and beyond (ElkassabgiData).

SEC EDGAR fundamentals as agent tools: look up or screen US public companies. Free, no key, CC0.

Open manufacturing and maker facility locations for country and facility-type queries.

Weather, climate, terrain, fire and flood risk data for any point or polygon on Earth. Free tier.

Free fan-convention data for AI agents: dates, registration windows & table costs, US & Canada