393 BC – He was sent to Tiribazus, Persian satrap of Sardis, to undermine the friendly relations then existing between Athens and Persia, offering to recognize Persian claims to the whole of Asia Minor and supremacy over Greek cities there.
388 BC – Antalcidas, then commander of the navy went to the active assistance of Persia against Athens.
– The success of his naval operations in the neighbourhood of the Hellespont was such that Athens was glad to accept terms of peace.
386 BC – The terms were announced to the Greek envoys at Sardis in the winter.
– Antalcidas continued in favour with Artaxerxes, until the annihilation of Spartan supremacy after the Battle of Leuctra diminished his influence.
367 BC – A final mission to Persia, probably was a failure, and Antalcidas, deeply chagrined and fearful of the consequences, is said to have starved himself to death.