{"ok":true,"demo":true,"endpoint":"/tools/portfolio_change_digest","sample_input":{"address":"0x0000000000000000000000000000000000000000","chain":"base","limit":20,"refresh":true},"sample_output":{"ok":true,"dataset_fresh_at":"2026-05-22T17:11:55.000Z","source_coverage":{"rpc_native_balance":true,"curated_erc20_balances":2},"result":"paid route returns wallet-specific hosted snapshot"}}