Blockchain ecosystem health from DeFiLlama — current TVL, 7d/30d TVL trend, and aggregate fees
Parameters
chainsanyoptional— Optional chain names to compare, such as ['Ethereum', 'Arbitrum', 'Solana']. When omitted, return the highest-TVL chains up to limit.
daysintegeroptional— Lookback window used when selecting the historical TVL points to inspect.
limitintegeroptional— Maximum number of chain rows to return when the result is not explicitly filtered.