Install send21 in Claude Code
claude mcp add --transport http send21 https://send21.io/mcp{
"mcpServers": {
"send21": {
"url": "https://send21.io/mcp"
}
}
}Frequently asked questions
What does the send21 MCP server do?
Prepares non-custodial payment drafts and pay links; payer signs in their own wallet.
Is the send21 MCP server free?
Yes, most likely. Open source and no paid account or API key is mentioned in the listing. Check the provider for current pricing.
Does send21 run locally or remotely?
Remote. Hosted by the provider. You connect with a URL, nothing to install.
How do I add send21 to Claude Code?
Run: claude mcp add --transport http send21 https://send21.io/mcp
More finance, fintech & payments MCP servers
View allSignal Band
Evidence-weighted decision engines for venture and AI business cases: fund, pilot or stop, by published rules.
Sector Pulse
US sector rotation: 30 sector baskets ranked each session, with a daily record; history needs a key.
Signed
An angel investor's portfolio, deal pipeline, and contacts: positions, returns, pitches, notes, and transactions.
RWA Data
RWA Data MCP Server
Stablecoin & RWA market data for AI agents: metrics, peg monitoring, prices, claim verification; x402 USDC pay-per-call.
SnowSignals TrendVane
Market-phase state per currency across timeframes (not trade signals); free phase stats, metered live reads.
RevExOS
Quote-to-cash tools: parse invoices and POs, 3-way match, proration, revenue schedules, dunning emails.