feat: add The Stall — 210 pay-per-call x402 financial intelligence MCP (v4.64.0) (#110)

* feat: add The Stall — x402 MCP server with 173 financial market data capabilities

* update The Stall to 191 caps v4.45.0

Author: KyleMillion

Readme.md

@@ -413,6 +413,7 @@ Note: the one marked as `Live Trading` has reasonable live trading support for a
 - [goMacro.ai](https://gomacro.ai) - AI-powered economic calendar with institutional-grade macro insights and scenario planning for NFP, CPI, PPI and other data releases.
 - [Chart Library](https://github.com/grahammccain/chart-library-mcp) |`Python`| - Historical chart pattern similarity search engine. 24M+ pre-computed embeddings (pgvector) across 15K+ symbols and 10 years of minute-bar data. Returns forward returns (1/3/5/10 day) for pattern-based strategy development. Also available as MCP server.
 - [Helium MCP](https://heliumtrades.com/mcp-page/) | `REST API`, `MCP` | - Free REST + MCP API providing ML-derived options pricing (per-symbol fair value, prob_ITM, Greeks), real-time market data, and AI-ranked trading strategies. Also includes 31-dim news bias scoring across 3.2M+ articles for sentiment overlays. 50 free queries/IP, no signup. [Source](https://github.com/connerlambden/helium-mcp)
+- [The Stall](https://github.com/thebrierfox/the-stall) | `MCP`, `x402` | - Pay-per-call MCP server with 191 financial market data capabilities: US stocks, ETFs, equity fundamentals, analyst ratings, earnings surprises, insider trades, hedge fund holdings, options chains, treasury yields, macro indicators, DeFi, crypto, and prediction markets. Pays in USDC on Base via x402; no API keys required. [Server](https://the-stall.intuitek.ai)
 
 ### Alternative