onetool-mcp: OneTool MCP is a single MCP server that bundles 100+ tools — Brave search, Google, Context7, AWS, Playwright, Chrome DevTools, Excel, database operations, and more. Instead of registering each tool individually and burning context on their definitions, agents write short Python code to call any tool on demand. Anthropic engineering research backs this approach: code execution reduces token usage by over 98%, cutting costs dramatically when agents need many external tools.; sp500-mcp-server: An MCP server and Next.js web app for querying S&P 500 company data from Supabase. It exposes tools for company fundamentals, news sentiment, officers, and SEC filings, along with a web UI and embedded MCP App resources.
Cutting MCP token overhead when an agent needs 10+ external tools
Financial research on S&P 500 companies