diff --git a/README.md b/README.md
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@@ -376,6 +376,7 @@ x402 leverages HTTP's `402 Payment Required` status code for instant stablecoin
 - [Solana Integration Guide](https://solana.com/developers/guides/getstarted/intro-to-x402) - Solana x402 integration
 - [Stellar x402 Facilitator](https://stellar.org/blog/foundation-news/x402-on-stellar) - Production facilitator on OpenZeppelin Relayer (sub-5s settlement)
 - [Pay.sh by Solana + Google Cloud](https://www.banklesstimes.com/articles/2026/05/06/solana-and-google-cloud-launch-pay-sh-for-ai-agent-micropayments/) - May 2026 stablecoin micropayment gateway for AI agents accessing Gemini, BigQuery, Vertex AI, and 50+ APIs
+- [The Stall MCP](https://github.com/thebrierfox/the-stall) — Production x402 MCP server with 201 financial data capabilities (crypto, equities, DeFi, options, prediction markets); agents pay per call in USDC on Base.
 
 ### L402