buttondown_add_subscriber — Buttondown MCP by usefulapi MCP Tool
buttondown_add_subscriber
(buttondown add subscriber) is one of 25 tools on the
Buttondown MCP by usefulapi
MCP server. Connect the server and your client discovers it on the handshake.
by client
How to call buttondown_add_subscriber from your client
- Claude Code Buttondown MCP by usefulapi buttondown_add_subscriber run in your project directory
- Claude Desktop Buttondown MCP by usefulapi buttondown_add_subscriber ~/Library/Application Support/Claude/claude_desktop_config.json
- Cursor Buttondown MCP by usefulapi buttondown_add_subscriber ~/.cursor/mcp.json
- VS Code Buttondown MCP by usefulapi buttondown_add_subscriber .vscode/mcp.json
- Zed Buttondown MCP by usefulapi buttondown_add_subscriber ~/.config/zed/settings.json
- Windsurf Buttondown MCP by usefulapi buttondown_add_subscriber ~/.codeium/windsurf/mcp_config.json
- Cline Buttondown MCP by usefulapi buttondown_add_subscriber ~/Library/Application Support/Code/User/globalStorage/saoudrizwan.claude-dev/settings/cline_mcp_settings.json
- Gemini CLI Buttondown MCP by usefulapi buttondown_add_subscriber ~/.gemini/settings.json
- Grok Buttondown MCP by usefulapi buttondown_add_subscriber .mcp.json (in your project root)
- ChatGPT Buttondown MCP by usefulapi buttondown_add_subscriber Settings → Connectors → Advanced → Developer mode
- Claude.ai Buttondown MCP by usefulapi buttondown_add_subscriber Settings → Connectors → Add custom connector
- LangChain Buttondown MCP by usefulapi buttondown_add_subscriber pip install langchain-mcp-adapters
Fastest route
claude mcp add --transport http buttondown https://buttondown.usefulapi.io/mcpOther tools on this server
- buttondown_get_account
- buttondown_list_newsletters
- buttondown_get_newsletter
- buttondown_list_subscribers
- buttondown_get_subscriber
- buttondown_update_subscriber
- buttondown_list_emails
- buttondown_get_email
- buttondown_get_email_analytics
- buttondown_create_email_draft
- buttondown_update_email_draft
- buttondown_list_tags
- buttondown_get_tag_analytics
- buttondown_create_tag
- buttondown_list_automations
- buttondown_get_automation
- buttondown_get_automation_analytics
- buttondown_list_surveys
- buttondown_list_survey_responses
- buttondown_list_segments
- buttondown_list_forms
- buttondown_list_snippets
- buttondown_list_webhooks
- buttondown_list_events
This list was read from the server itself, by connecting to it and calling tools/list on 12 October 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.