"Identifying Servers Without Any API Key Configuration" matching MCP connectors:

Live internet-censorship signals: Great Firewall reachability, model-layer censorship, takedowns.

Funding stress early warning for US money markets from free public data, with an honest backtest.

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

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

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

US crime scores, incidents, neighborhood demographics, rent data, and offender search by address.

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

Nonpartisan U.S. Congress data: bill decodes, rep lookup, bilingual EN/ES, read-only, no accounts.

SEC filings, XBRL earnings and Form 4 insider trades for agents. S&P 500. Pay per call via x402.

Search 46,000+ academic journals: trust scores, quartiles, indexing and citation verification.

Turkey & EU business data: validation, sanctions screening, parsing, FX and fuel price history

Domain & company intel for AI agents: RDAP, DNS, email deliverability, tech stack. No API keys.

US Federal Register for AI agents: rules, notices and executive orders. No API keys.

Vanlife & RV travel data. Fuel, weather, currency, events, news. https://openvan.camp/en/developers

Primary-source commodities data for AI agents — EIA, FRED, CFTC, USDA, USGS via x402 on Base.

US weather, alerts, earthquakes and elevation for AI agents, from NWS/NOAA and USGS. No API keys.

Natural-language calorie lookup. Send '2 large eggs', get USDA-sourced nutrition data.

Search and discover AI-ready websites from the international llms.txt directory using a read-only remote MCP server.

Patents MCP — wraps the USPTO Open Data Portal (ODP) Patent File Wrapper API