Tenderly is a blockchain operations platform for teams running production systems onchain. It pioneered transaction simulation in Web3 and built one of the first smart contract debuggers, and today gives engineering, finance, and risk teams a single environment to simulate, validate, and monitor onchain activity, so they can model the outcome of any transaction, integration, or capital allocation against live production state before it happens. High-fidelity simulations preview any onchain action against real, current state, including live oracle prices and synced liquidity. A multichain Explorer decodes transactions and contract activity into readable operational context. Real-time monitoring detects anomalies and triggers automated, validated responses. The platform supports 100+ EVM networks, from Ethereum and leading Layer 2s (Arbitrum, Optimism, Base, Polygon, Linea) to emerging chains such as World Chain, MegaETH, and Plasma. Tenderly is a chosen infrastructure and tooling provider for major new networks, including Robinhood Chain, Circle's Arc, Sony's Soneium, and Tempo, the payments blockchain incubated by Stripe and Paradigm. Founded in 2018, it is used across the onchain ecosystem: by protocols such as Aave, Uniswap, Morpho, Safe, Chainlink, and Sky; by institutions, exchanges, and market makers including Kraken, Binance, Anchorage Digital, Maple, Tether, and Wintermute; and by security teams such as the Security Alliance (SEAL), zeroShadow, and Cyfrin. Teams have run more than 4 billion simulations and debugged over 10 million transactions on the platform, which powers protocols and organizations behind more than 50 billion dollars in onchain value.