"Google Cloud Spanner" matching MCP connectors:

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.

12 Google News endpoints. Pay per call in USDC via x402.

ArXiv preprints + Google Scholar papers, with citation counts in one query.

News MCP: real-time headlines & custom news search across 7 regions. Free, just sign in with Google.

Google Trends search interest over time with growth metrics. Free key at trendsapi.ai

Trend data from Google, TikTok, Amazon, Reddit, YouTube, Steam, npm and more as JSON

Trend data from Google Trends, YouTube, TikTok, Reddit, Amazon, Wikipedia, npm, Steam and more

Search and download academic papers from arXiv, PubMed, bioRxiv, medRxiv, Google Scholar, Semantic…

Global B2B intelligence for AI agents: 35M+ companies, 1.6M sanctions, KYB pack. 78 tools.

30+ academic research tools from Semantic Scholar, Google Scholar, arXiv, PubMed, and clinical trial databases. Search papers, find citations, and explore scholarly data. $0.01/call

Data-center, grid, fiber & gas infrastructure intelligence for AI agents — query and cite.

Search Google Scholar, PubMed, and academic databases for research papers and citations via MCP.