diff --git a/ECOSYSTEM.md b/ECOSYSTEM.md
index 5c28501..893f803 100644
--- a/ECOSYSTEM.md
+++ b/ECOSYSTEM.md
@@ -27,6 +27,7 @@ BlockRun works with the x402 facilitator network:
 
 | Project | Category | Description |
 |---------|----------|-------------|
+| [Arch Tools](https://archtools.dev) | AI Tools / MCP | 53 production-ready AI tools via MCP with x402 USDC payments on Base L2. Web scraping, crypto data, AI generation, OCR, and more. |
 | [LLM_trader](https://github.com/qrak/LLM_trader) | Trading Bot | Autonomous crypto trading bot with Visual Cortex for chart analysis |
 
 ### Claude Code Tools