Paste one private key per line. Kept in server memory for this run only — never written to disk, never sent anywhere but your own machine.

This calls OpenSea's official public API — not a private endpoint. An instant free key is fetched automatically; if that's rate-limited (429), expand "Use my own key" above and paste one from docs.opensea.io/reference/api-keys. It handles stage selection (public/FCFS/allowlist) server-side, so it works even for signature-gated stages this tool otherwise can't build on its own.

You pay base fee + tip, never more than your max fee ceiling. The node also requires your wallet hold gasLimit × maxFee + mint value upfront — a high ceiling with a thin wallet gets rejected before firing. For scheduled fires, nonce/balance are prefetched ~10s early so the live gas estimate is the only round-trip left at fire time.