Some Jain Āgams / texts starting with K are:

• Kalpasūtra
• Bṛhatkalpasūtra
• Kalpavyavahāra
• Kappa (Prakrit form of Kalpa)

In different Jain traditions, spellings and naming may vary slightly.

If you want, I can also give:

• all Jain Āgams in alphabetical order, or
• only Śvetāmbara / only Digambara names.