{"service":"GodsLand NFT Marketplace API","status":"ok","network":"sepolia","endpoints":{"health":"GET /health","stats":"GET /api/stats","auth":["GET  /api/auth/nonce/:address","POST /api/auth/verify"],"nfts":["GET  /api/nfts","GET  /api/nfts/:tokenId","GET  /api/nfts/metadata/:tokenId","POST /api/nfts/build-mint"],"marketplace":["GET    /api/marketplace/listings","GET    /api/marketplace/listings/:tokenId/:seller","POST   /api/marketplace/build-list","POST   /api/marketplace/build-buy","PUT    /api/marketplace/build-update/:tokenId","DELETE /api/marketplace/build-cancel/:tokenId","POST   /api/marketplace/build-sell-direct","POST   /api/marketplace/confirm-sell-direct"],"auctions":["GET    /api/auctions","GET    /api/auctions/:tokenId","GET    /api/auctions/:tokenId/bids","POST   /api/auctions/build-create","POST   /api/auctions/build-bid","POST   /api/auctions/build-result/:tokenId","DELETE /api/auctions/build-cancel/:tokenId"],"users":["GET /api/users/profile/:address","GET /api/users/transactions/:address","PUT /api/users/profile"]}}