TARE measures what a Uniswap v4 hook takes on a swap: the same swap is quoted twice on a pinned fork, once with the hook, once against an 89-byte inert stub, and the gap is the take. The instrument needs JavaScript to read its corpus, which is embedded in the page. The raw corpus and the commands that replay it are in the repository: github.com/JeanBaptisteDurand/ETH_Online_2026.