{ΟΙ.} Ὁποῖα χρῄζει ῥηγνύτω· τοὐμὸν δ’ ἐγώ,
κεἰ σμικρόν ἐστι, σπέρμ’ ἰδεῖν βουλήσομαι.
It appears that χρῄζω is used here with an impersonal agent: "Break forth what will! " — Jebb. “May whatever will burst forth!” — Lloyd-Jones.
I looked in LSJ but didn’t find anything which was clearly impersonal. Perhaps “fate” (not explicitly mentioned here) is treated as a sort of personal agent.