MCP Servers

Blockchair MCP — multi-chain block explorer (free tier, keyless).

Blockstream.info Esplora MCP — Bitcoin block/tx/address explorer.

Bank Negara Malaysia (BNM) Open API MCP. Keyless.

BookBrainz MCP — open book metadata (MetaBrainz / sister of MusicBrainz)

BPstat — Banco de Portugal statistics API (Portuguese central bank). Keyless.

Deutsche Bundesbank (Germany's central bank) statistics MCP.

Business Feeds MCP.

California State Procurement MCP — State contract awards & purchase orders (keyless).

caniuse MCP — browser feature support tables

Carbon Interface MCP — Carbon Interface API (v1)

CarsXE MCP — wraps the CarsXE Vehicle Data API (carsxe.com)

Statistics Netherlands (CBS / StatLine) OData MCP.

Census MCP — U.S. Census Bureau housing-relevant APIs.

Census Trade MCP — US Census Bureau International Trade data

Chainlist MCP — registry of EVM chains

chaos-index MCP — wraps StupidAPIs (keyless — no credential needed)

ChEMBL MCP — drug discovery database (EBI).

Chile Government Procurement MCP — Mercado Público / ChileCompra (keyless-ish).

China A-shares MCP. Keyless.

Chuck Norris MCP — wraps chucknorris.io (free, no auth)

CISA KEV MCP.