Yogini Tantra

Creation, dissolution, determination of mantras, the establishment of deities, description of pilgrimage sites, dharma of stages of life, establishment of the twice-born, establishment of beings etc., determination of yantras, origin of deities and origin of trees, description of kalpas, establishment of astrology, narration of the Puranas, account of the treasury, account of vows, description of purity and impurity, characteristics of women and men, dharma of kings, dharma of charity, dharma of the ages, conduct, and description of spiritual matters—that which includes these characteristics is called a Tantra.

Creation and the account of astrology, the illumination of daily duties,
The order of the sequence, the classification of caste, and likewise the classification of lineage,
And the dharma of the age is known; these are the eight characteristics of the Yamala.

Creation, description of astrology, daily duties, order of sequence, caste division, lineage division, and dharma of the age—these are the eight characteristics of the Yamala.

According to the Varahi Tantra, the verses of the Tantra total nine lakhs in the celestial world, the world of Brahma, and the underworld, and only one lakh in this Bharatavarsha. Therefore—

"The Agama is stated to be three-fold, and the fourth is remembered as the divine.
The Kalpa is stated to be four-fold, namely Agama, Damara,
Yamala, and Tantra; these are their separate divisions."

The Agama is of three types; the fourth is the divine original: "aishvara" (pertaining to Ishvara). The Kalpa is also of four types: Agama, Damara, Yamala, and Tantra. This classification is observed. It is written in the Mahavishvasara Tantra—

"Sixty-four Tantras, beginning with the Yamala, O Parvati,
Are fruitful here in the lands ruled by Vishnu original: "vishnukrantasu bhumishu" (a specific division of geography in Tantric cosmography).
Whatever Tantras have been spoken as different Kalpas,
Are fruitless here, O beautiful one, intended only to delude heretics."