"A tool or technique to improve prompt writing" 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.

A Model Context Protocol server that provides Philippine License to Sell (LTS) verification data to LLMs. Built on Cloudflare Workers with Supabase. Public, read-only, no authentication required. Data sourced from the Department of Human Settlements and Urban Development (DHSUD) License to Sell registry and cross-referenced with published real estate projects on REN.PH.

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.

China A-shares MCP. Keyless.

Gateway between LLM agents and world data through eight tools and a bundled endpoint catalog.

One MCP endpoint over 75 public PPN APIs: search_apis to discover, execute_api to call. Free tier.

Free access to 3.3M French & EU court decisions + 1.5M law articles w/ history. 31 read-only tools

Reverse geocode latitude/longitude to loc_id; resolve loc_ids to boundaries, centroids, hierarchy.

UN FAOSTAT global food & agriculture statistics over a local SQLite mirror, via MCP.

Public, read-only access to ~3.9M Romanian companies (data from ONRC, ANAF, and the Ministry of Finance). Five tools: search & filter companies by name, CAEN activity, county, revenue/profit/employee ranges, and VAT status; fetch a company profile by CUI; yearly financial history; public status flags (VAT, insolvency, dissolution, e-Factura); and CAEN activity-code lookup. No authentication required.

Five-to-twelve-cent source-attributed public URL and domain result packs for AI agents.

MCP bridge to EU customs-trade & industrial-production statistics (Eurostat Comext/PRODCOM)

Norwegian open-source community wiki (2,290 articles, 2008-2022) as a signed KCP knowledge web.

Read-only breach intelligence from public feeds: reports THAT a domain leaked, never the data.

Semantic search across Japan's government white papers, in English or Japanese. Free beta.

Query FDA data on drugs, food, devices, and recalls via openFDA. STDIO or Streamable HTTP.

What a stock's price is betting on: implied growth, duration, margin from SEC filings. Free tools.

Citation-health over a CC0 citation graph: what supports, refutes, or cites a paper. Read-only.

Read-only MCP access to DSGHT.ai published foresight and country-grounded claim resolution.

Keyless MCP access to official Luxembourg public data: laws, statistics, mobility, and more.