Email for agents, as MCP tools

# With an agent API key
claude mcp add --transport http mailgi https://api.mailgi.xyz/mcp \
  --header "Authorization: Bearer amb_..."

# Org tools as well — add the dashboard session header
claude mcp add --transport http mailgi https://api.mailgi.xyz/mcp \
  --header "Authorization: Bearer amb_..." \
  --header "X-Mailgi-Session: <session token>"

# No credentials yet — public tools only, for bootstrap
claude mcp add --transport http mailgi https://api.mailgi.xyz/mcp

// claude_desktop_config.json
{
  "mcpServers": {
    "mailgi": {
      "command": "npx",
      "args": [
        "-y", "mcp-remote", "https://api.mailgi.xyz/mcp",
        "--header", "Authorization:${MAILGI_AUTH}"
      ],
      "env": { "MAILGI_AUTH": "Bearer amb_..." }
    }
  }
}
// The env indirection keeps the space in "Bearer amb_..."
// from being split when the arguments are passed on.

// .cursor/mcp.json (project) or ~/.cursor/mcp.json (global)
{
  "mcpServers": {
    "mailgi": {
      "url": "https://api.mailgi.xyz/mcp",
      "headers": {
        "Authorization": "Bearer amb_..."
      }
    }
  }
}