{"name":"Crypto Balance API","version":"1.0.0","endpoints":{"GET /api/btc":"Get BTC balance. Params: input (zpub, xpub, or address)","GET /api/eth":"Get ETH balance. Params: address","GET /api/xrp":"Get XRP balance. Params: address","GET /api/sol":"Get SOL balance. Params: address","POST /api/scan":"Scan multiple chains. Body: { btc?, eth?, xrp?, sol? }"}}