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.
Read-only Solana transaction preflight and agent media tools: live priority fees, simulation, failure diagnosis, token-risk evidence, PDF-to-Markdown, and audio normalization. No API key; remote MCP calls use x402 USDC on Solana ($0.002–$0.01/call). Install via npx -y utilia-solana-agent@0.5.7 or use remote MCP at https://api.utilia.ink/mcp.