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.
Browse, recommend, and buy authentic Chinese tea from hou-tea.com using USDC stablecoin via the x402 protocol. First commerce MCP that ships real on-chain payment intents (delegated to wallet MCPs like @coinbase/payments-mcp). 8 tools: browse / recommend / explain / compare / health-filter / payment / order-status / agent-card.
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.