#rollups

Live economic-activity metrics for Ethereum Layer-2 rollups — Arbitrum, Base, Optimism, zkSync, Linea, Scroll, Polygon and more — powered by the public growthepie.xyz feed, no key, nothing stored. This is the L2 fundamentals cut: not a single chain's block or gas data, but how much each rollup is actually used and what it earns. The chains endpoint lists the tracked rollups. The chain endpoint returns one rollup's latest metrics: daily active addresses, transaction count, fees paid, on-chain profit (the fees it keeps after paying Ethereum to post its data), median transaction cost, stablecoin supply, total value locked, market cap and fully-diluted valuation. The metric endpoint ranks every rollup by a single metric, so you can see at a glance which L2 leads on users, fees or profit and how the scaling race is shifting. Track the real adoption and economics of the rollup ecosystem as live JSON. This is the L2 activity / economics cut — distinct from the per-chain on-chain (block and gas) APIs and the TVL-only APIs in the catalogue.

api.oanor.com/growthepie-api

Live cross-chain bridge data from Across, one of the largest intent-based bridges, which moves USDC, ETH, WBTC and other assets between Ethereum and its rollups (Arbitrum, Base, Optimism, Polygon, zkSync, Linea, Blast, Scroll and more) using a relayer network and a single unified liquidity pool. The quote endpoint prices a bridge transfer — the relayer capital fee, gas fee, LP fee, total fee, the amount received and the estimated fill time. The routes endpoint lists every supported bridge route (origin chain, destination chain, token). The limits endpoint returns the min and max bridgeable amount for a route. The chains endpoint lists supported chains. Read live from Across, nothing stored. This is Across's own cross-chain bridge fee, route and fill-time layer — distinct from DEX, lending, staking and price feeds.

api.oanor.com/across-api