"Enhancing Claude-based Code Generation" matching MCP connectors:

An MCP server that audits the fairness of construction and renovation estimates in Japan. Provides fair-price ranges, overcharge detection, and verifiable unit-cost data based on JCCDB (65,729 items, DOI-backed).

Powerful OpenDART API-based Korean corporate disclosure tools for accounting professionals

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.

Real public holiday lookup for 206 countries via a rule-based calendar engine. Paid via x402.

Statistics for every Finnish postal code area and municipality: income, housing, crime, air quality

Postal code lookup with place names and coordinates for 60+ countries. Via Zippopotam.us.

Energy-Charts (Fraunhofer ISE) MCP — European electricity generation, prices, and capacity.

90+ free tools, Claude & ChatGPT: prices, options, SEC filings, 13F, insider, congress, transcripts.

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.

Query US tap-water quality from the EPA's own SDWIS records: the water systems serving a city, contaminants and violations on record (with dates and whether the EPA classifies them as health-based), compare cities, and explain contaminants. Public, no-auth, read-only. ~19,000 cities across all 50 states + DC, ~1.5M EPA records. Every response reports what the EPA recorded, never a safety verdict.

US ZIP code intelligence: demographics, weather, tax, crime, housing, voting, and more.

Brazilian Open Finance MCP — 30+ banks (Itaú, Nubank, etc.) to Claude/Cursor. Read-only.

An MCP server that through www.gdacs.org provides access to web‐based disaster information systems.

Establishment counts, employment, and payroll by geography and NAICS code from Census CBP

Zippopotam MCP — wraps Zippopotam.us ZIP/postal code API (free, no auth)

Query Australia's electricity market (NEM/AEMO): prices, generation, FCAS, interconnectors, bids.

Free, keyless postal/ZIP code lookup: place name(s), state/region, and coordinates.

ISO country/language/currency/script code lookups (Debian iso-codes JSON)

B2B lead generation for Japan: search 1M+ companies by size, capital, location, and government-subsidy history, with executive names and procurement records.

UK SIC code lookup, GICS/ICB mapping, and Companies House search. 731 codes, 5.6M companies.