"National Rail" 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).

AI-native stablecoin settlement rail replacing SWIFT for institutional cross-border payments. 14 tools covering settlement quotes, execution, ESG scoring, oracle status, fee verification, competitor comparison, rail health, investment context, and MPP-gated macro intelligence. Settles via Base mainnet USDC at ~1.385% all-in.

Croatian National Bank (Hrvatska narodna banka, HNB) exchange-rate MCP. Keyless.

Czech National Bank (Česká národní banka, ČNB) public API MCP. Keyless.

National Bank of Romania (Banca Naţională a României, BNR) FX reference rates MCP. Keyless.

Narodowy Bank Polski (National Bank of Poland) Web API MCP. Keyless.

National Bank of Ukraine (NBU) public statistics MCP. Keyless.

Swiss National Bank (SNB) data portal MCP. Keyless.

Serbia SEF eFaktura invoices for AI agents: build UBL 2.1 SRB-CIUS, upload to SEF, query, cancel.

Romania e-Factura invoices for AI agents: build UBL 2.1 CIUS-RO, upload to ANAF/SPV, query.

Poland KSeF 2.0 national e-invoices for AI agents: issue FA(3) faktura, query by KSeF number.

Greece myDATA invoices for AI agents: build AADE XML, transmit to myDATA, query by MARK.