"Free PostgreSQL Database Solutions" matching MCP connectors:

Tesouro em Foco is a free remote MCP server that brings Brazilian government bond (Tesouro Direto) pricing into AI assistants such as Claude, Cursor, and any MCP-compatible client. The engine implements the Brazilian National Treasury's official pricing methodology — validated against 269,000+ real trades — and covers all retail bond types: fixed-rate (LTN, NTN-F), inflation-linked (NTN-B Principal, NTN-B), and retirement/education bonds (Renda+ and Educa+, NTN-B1).

Eligibility-first UK & EU grant discovery, inside ChatGPT and Claude. Checks eligibility before recommending, explains why each grant fits, and cites the funder's own page on every answer — with an honest "competition_risk: unknown" when the data isn't there. 6 tools: search, fetch, find_opportunities, should_apply, explain_opportunity, complete_profile. Transport: Streamable HTTP. Auth: OAuth 2.1 + PKCE. Free to install, no card required.

Search foods, compare nutrients, and look up the full USDA FoodData Central database.

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

Free French rental-compliance lookups: zone tendue, tenant notice period, DPE letting restrictions.

Point-in-time, survivorship-free SEC EDGAR fundamentals + smart-money signals for AI agents.

Dutch vehicle, address, building, elevation, holiday & demographics data. Free samples, then paid.

Free KZ agent utilities (Kazpost tracking, IIN/BIN, IBAN, LEI, FX) + governed API marketplace.

Free public-record contractor license checks across 34 US jurisdictions (2.7M records). Tool

EPA AirNow MCP — official US real-time AQI + forecast (free key)

LatAm govt data, cited to source: rates, VAT, tax, wages, holidays, FX. 22 countries; Brazil free.

World Bank MCP — wraps the World Bank Data API v2 (free, no auth)

OpenFDA MCP — wraps the openFDA API (free, no auth required)

Normalized SEC EDGAR fundamentals. 3 of 6 tools free; the rest $0.04-$0.10 per call in USDC.

Kolada (RKA) MCP — Sweden's municipal & regional key-performance-indicator (KPI) database.

CPSC MCP — US consumer-product safety recalls (CPSC, free, no auth).

African govt data, cited to source: rates, VAT, tax, wages, holidays, FX. 34 countries; Ghana free.

Swiss Transport MCP — wraps Transport Open Data API (free, no auth)

FAA Delays MCP — live US airport operational status (FAA, free, no auth).

CFPB MCP — Consumer Financial Protection Bureau complaint database (free, no auth)