V

verifiable-receipts

Zambo: the cross-AI execution layer. 100+ native tools over one MCP endpoint, with a verifiable execution receipt for every call (AER-1 open draft). Free: 20 calls/tool/day, no account. Day Pass $0.99 USDC on Base for 24h; Zambo Pass $29/month ($19/month for verified $ZAMBO holders). https://zambo.dev