send21 for Claude Code

io.github.send21io/mcp

Non-custodial payment drafts/pay links for BTC, USDC, USDT, EURC. Never holds keys.

client:Claude Code transport:streamable-http tools:9

Install send21 in Claude Code

run in your project directory

claude mcp add --transport http mcp https://send21.io/mcp

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs