marginal MCP server

Email A/B tests for AI agents: subject lines, managed sends, open/click tracking, and results.

Category: Productivity

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Source: official MCP Registry entry sh.marginal/mcp

Direct MCP URL and setup

CLAUDE CODE

claude mcp add --transport http sh-marginal-mcp https://marginal.sh/mcp

CURSOR / VS CODE (mcp.json)

{ "mcpServers": { "sh-marginal-mcp": { "url": "https://marginal.sh/mcp" } } }