Side-by-side comparison of two Model Context Protocol servers — install paths, tools, quality signals, and directory engagement so you can pick the right one for Claude, Cursor, and other MCP clients.
LLM-agent-native backtest framework for SHFE daily futures research. 23 MCP tools (strategy validation, scaffolding, indicator catalog, error-code lookup), 22 in-package skills, 32 catalogued error codes, working strategy templates. pip install echolon then claude mcp add -s user echolon -- echolon-mcp.
Official MCP server for EU VAT validation via the EU Commission's VIES service + offline VAT rates for 45 European countries. Five tools: validatevatnumber (live VIES with company name, address, registration date, and optional consultation number for audit), getcountryvatrates, listeuvatrates, checkvatformat, listsupportedcountries. Four of five tools work offline without an API key (data bundled via eu-vat-rates-data). Open source MIT, every release signed with npm provenance via GitHub Actions OIDC. Install: npx -y vatnode-mcp.