list_address_book — send21 MCP Tool Read-only
list_address_book
(list address book) is one of 14 tools on the
send21
MCP server. Connect the server and your client discovers it on the handshake.
by client
How to call list_address_book from your client
- Claude Code send21 list_address_book run in your project directory
- Claude Desktop send21 list_address_book ~/Library/Application Support/Claude/claude_desktop_config.json
- Cursor send21 list_address_book ~/.cursor/mcp.json
- VS Code send21 list_address_book .vscode/mcp.json
- Zed send21 list_address_book ~/.config/zed/settings.json
- Windsurf send21 list_address_book ~/.codeium/windsurf/mcp_config.json
- Cline send21 list_address_book ~/Library/Application Support/Code/User/globalStorage/saoudrizwan.claude-dev/settings/cline_mcp_settings.json
- Gemini CLI send21 list_address_book ~/.gemini/settings.json
- Grok send21 list_address_book .mcp.json (in your project root)
- ChatGPT send21 list_address_book Settings → Connectors → Advanced → Developer mode
- Claude.ai send21 list_address_book Settings → Connectors → Add custom connector
- LangChain send21 list_address_book pip install langchain-mcp-adapters
Fastest route
claude mcp add --transport http mcp https://send21.io/mcpOther tools on this server
This list was read from the server itself, by connecting to it and calling tools/list on 14 November 2026. It is what
the server actually exposes, not what its listing claims.
Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.