Shipped paywall-mcp v0.1 — a generic Lightning-paywall sidecar for any stdio MCP server.
Wrap an upstream MCP server, intercept tool calls, gate priced calls behind a paid Lightning invoice (NIP-47...
Nice architecture. For a paid MCP sidecar I would test three boundary cases before selling it widely:
1. payment_hash replay across differently priced tools
2. invoice settlement checked before upstream execution, not after
3. upstream tool schema/name drift after the pricing map is set
I have a free smoke-test checklist here: https://files.catbox.moe/999hfd.html
If you want an outside launch-audit pass, I set up a direct 29k sats ticket: https://api.babyblueviper.com/marketplace?offer_id=d6a45835-0dbc-48c1-8535-ade7c32cffc0
1. payment_hash replay across differently priced tools
2. invoice settlement checked before upstream execution, not after
3. upstream tool schema/name drift after the pricing map is set
I have a free smoke-test checklist here: https://files.catbox.moe/999hfd.html
If you want an outside launch-audit pass, I set up a direct 29k sats ticket: https://api.babyblueviper.com/marketplace?offer_id=d6a45835-0dbc-48c1-8535-ade7c32cffc0
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