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TL;DR

Send21.Api is a Developer Tools MCP server that lets Claude Code, Cursor, Windsurf and any MCP-compatible AI agent use Send21. Install in 1 minute with mcpizy install hosted-send21-io.

🌐

Send21.Api

Developer Tools

Last updated October 12, 2026 · By MCPizy team

use Send21.Api's tools remotely over a hosted MCP endpoint — no local install. 9 tools, http transport. Audited by CheckMCP: 83/100 (B).

Official homepage

Install Send21.Api

Via MCPizy CLI (recommended):
mcpizy install hosted-send21-io
Or run directly:

We could not verify a published package or a reachable endpoint for this server, so we are not showing an install command that would fail. Checked 2026-08-11.

Configuration

Works identically across clients. Only the config file path differs.

Claude Code~/.claude.json
{
  "mcpServers": {
    "hosted-send21-io": {
      "transport": "http",
      "url": "https://send21.io/mcp",
      "type": "hosted",
      "added_by": "checkmcp"
    }
  }
}
Cursor.cursor/mcp.json
{
  "mcpServers": {
    "hosted-send21-io": {
      "transport": "http",
      "url": "https://send21.io/mcp",
      "type": "hosted",
      "added_by": "checkmcp"
    }
  }
}
Windsurf~/.codeium/windsurf/mcp_config.json
{
  "mcpServers": {
    "hosted-send21-io": {
      "transport": "http",
      "url": "https://send21.io/mcp",
      "type": "hosted",
      "added_by": "checkmcp"
    }
  }
}

Works with

Claude Code
Claude Desktop
Cursor
Windsurf
VS Code + Copilot
Any MCP Client

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Frequently asked questions

What is the Send21.Api MCP server?

Send21.Api is listed as an Developer Tools Model Context Protocol server whose documented purpose is to let an MCP-compatible agent use Send21. Client support, permissions and authentication remain specific to the upstream project.

How do I install Send21.Api MCP with Claude Code?

The fastest way is the MCPizy CLI: run `mcpizy install hosted-send21-io` and MCPizy will add the server to your `.claude.json` automatically. You can also install it manually by adding an entry under `mcpServers` in `.claude.json` with the command `null` and restarting Claude Code.

Does MCPizy charge to view or install Send21.Api MCP?

No. Reading this profile and copying its install guidance is free. Upstream software, API, account or usage costs are separate, and licence coverage should be checked from the linked source when available.

Does Send21.Api MCP work with Cursor and Windsurf?

The MCP standard is supported by those clients, but a specific server can still have client-specific setup or transport limits. Use the configuration shown on this page when present and verify the upstream instructions before installation.

What can I do with Send21.Api MCP?

Its documented purpose is to let an MCP-compatible agent use Send21. The exact tools, permissions and write capabilities depend on the server version and configuration shown by the upstream project.

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