Drain Mcp

kimbo128/drain

Pay for AI inference with USDC on Polygon without API keys or intermediaries. You open a payment channel on-chain, then stream requests off-chain with signed vouchers that increment the total amount owed. The provider claims payment later with your highest voucher signature. The MCP server auto-discovers providers from handshake58.com and handles the voucher signing flow. Useful when you want programmatic access to AI models using crypto micropayments instead of traditional API keys, or when building agents that need to pay for services autonomously. Two on-chain transactions per session (open and close), everything else happens off-chain at around $0.000005 per request.

GitHub stars

1

tools

5

auth

Secret needed

transport

STDIO

env var

1

last updated

Feb 17, 2026

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