"npm" matching MCP servers:

Cryptographic receipts for AI agent decisions and game outcomes. Notarize decisions, anchor commitments on Base mainnet, and verify receipts end to end - hash content, submit anchors, check status. Ships 17 tools with both a hosted remote endpoint and a local npm package.

Enables MCP clients to control a Minecraft survival character via Mineflayer, with a web UI, viewer, and custom TypeScript script execution.