What is "Musnad Zayd" and are all its hadiths authentic because they are narrated on the authority of Ali, Hussein, and Hasan (may Allah be pleased with them)?

The book "Musnad Zayd" is an accredited book among the Zaydis, attributed to Zayd ibn Ali, but its attribution to him is incorrect. The one who narrates from him is Amr ibn Khalid al-Wasiti, who is abandoned in Hadith, accused of lying. Ahmad, Yahya, al-Daraqutni, and others declared him a liar. In fact, Wakee' said: "He used to fabricate Hadith." Sheikh Al-Albani said: "The status of this Musnad, in our view, is like that of Musnad al-Rabi' ibn Habib, or worse."