Finance & Crypto Hosted remote
send21
Non-custodial payment drafts/pay links for BTC, USDC, USDT, EURC. Never holds keys.
Install
Remote streamable-http
https://send21.io/mcpClient config (Claude Desktop, Cursor, Windsurf and most MCP clients)
{
"mcpServers": {
"io-github-send21io-mcp": {
"url": "https://send21.io/mcp"
}
}
}Source: official MCP Registry record · registry name io.github.send21io/mcp · published 2026-09-06 · updated 2026-09-06. Not an endorsement; review the code before connecting it to anything sensitive.