Add x402-proxy

Author: tenequm

data/apps.csv

@@ -2214,3 +2214,4 @@ backup,qbak,,https://github.com/andreas-glaser/qbak,A single-command backup help
 file-handling,CHMpy-sp,,https://github.com/AmmarSyamil/CHMpy,TUI made from Textual for changing file/folder permission in Linux. 
 text-search-replace,scooter,,https://github.com/thomasschafer/scooter,Interactive find-and-replace TUI app; By default the program recursively searches through files in the current directory and can also be used to process text from stdin.
 productivity,Sinkzone,,https://github.com/berbyte/sinkzone,"Application that blocks everything by default unless you explicitly allow it; A DNS tool for productivity, focus, and child safety."
+networking,x402-proxy,https://www.npmjs.com/package/x402-proxy,https://github.com/cascade-protocol/x402-proxy,"curl for x402 paid APIs. Auto-pays HTTP 402 responses with USDC on Base and Solana, with MCP proxy for AI agents."