We offer private testnets that replay mainnet, with built-in contract simulations, analytics, and developer tools.

Joined February 2024
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🚨BREAKING: WE ASKED DEVS WHY TESTNETS SUCK!
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Ethereum just hit a record: 8.7M smart contract deployments in a single quarter. More contracts than ever. Same broken testnets as always. If you’re shipping in 2026, test like it’s mainnet. Because eventually, it is. Contract.dev. Not a testnet. Not a fork. A production grade staging env for smart contracts.

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. contract.dev isn’t just another dev tool. it’s a private, live copy of mainnet with contract dashboards, a simulation engine, and dev utilities built in. → stage contracts against real chain state. uniswap liquidity moves. chainlink feeds update. every protocol behaves exactly like production. → track TVL, fees, balances in auto-generated dashboards. every contract you deploy gets its own workspace. no dune. no custom tooling. → fire 10k txs at your contracts and see what breaks. simulations surface the bugs that only show up at scale yield drift, fee leaks, accounting errors. → impersonate any wallet. override oracle prices to simulate crashes. spin up chainlink upkeeps in one click. push to github, auto-deploy to your stagenet. sepolia is fake. anvil is frozen. forks drift the second you start them. not a testnet. not a fork. a production-grade staging env for smart contracts.
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When you can test your project in real conditions before mainnet.
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Any weekend plans? Me: Deploy. Simulate. Ship. Deploy. Simulate. Ship. Deploy. Simulate. Ship. Deploy. Simulate. Ship. Deploy. Simulate. Ship. Deploy. Simulate. Ship. Deploy. Simulate. Ship. Deploy. Simulate. Ship. Deploy. Simulate. Ship. Deploy. Simulate. Ship.
any weekend plans? me: programmable economy programmable economy programmable economy programmable economy programmable economy programmable economy programmable economy programmable economy programmable economy programmable economy programmable economy programmable economy programmable economy programmable economy programmable economy programmable economy
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contract.dev retweeted
Fully testing a smart contract on a live mainnet fork in under 2 mins. Deploy, simulate 10k txs, check dashboards all on Contract.dev. The best part? No fake liquidity. No frozen blocks. Just real mainnet conditions.
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Happy weekend guys This has been one of our best weeks so far.
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After posting that video, we realised something. It wasn’t just these devs. 90% of Web3 devs feel the exact same way. That’s exactly why we built Contract.dev. A place where you can test your project like you’re already on Mainnet before you actually are. Here’s what you get: > Mainnet Replay: Uniswap, Chainlink, Curve all behave like production > Contract Workspaces: auto-generated dashboards tracking TVL, fees, balances, storage vars > Simulation Engine: fire 10k txs at your contracts, see what breaks at scale > Wallet Impersonation: test from any address, even Vitalik’s > Oracle Overrides: crash ETH to $1, test liquidations in real conditions > GitHub CI/CD: push code, auto-deploy, workspace s spin up instantly Sepolia is fake. Anvil is frozen. Forks drift. Contract.dev is the fix.

🚨BREAKING: WE ASKED DEVS WHY TESTNETS SUCK!
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🚨BREAKING: WE ASKED DEVS WHY TESTNETS SUCK!
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Go check it out test smarter before mainnet: contract.dev

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Tomorrow is the big day for us.
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contract.dev retweeted
Breaking News🚨: Just got off a call with one of the biggest projects on ethereum. showed them the demo. they got it instantly. and honestly, this isn't about one call or one partnership. it's about what we've been quietly building at contract.dev for months and the fact that smart contract devs, defi protocols, and the broader builder community are starting to see it the same way we do. the testnet space has been broken for years. devs have made do with sepolia, anvil, stale forks. we've been heads down building the alternative and conversations like today's confirm we're onto something real. if this lands the way it's looking, a lot of smart contract devs are about to test on stagenets at hackathons, in defi pipelines, in pre-mainnet workflows. can't share specifics yet. but something big is coming to contract.dev. keep building, keep shipping. stay tuned.

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contract.dev retweeted
Shipping something big next week. The kind of thing devs wish existed for years. stay tuned.
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contract.dev retweeted
Something big dropping at @contractdotdev next week
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contract.dev retweeted
this is for all web3 devs. introducing stagenets powerful EVM sandboxes for smart contract teams. private testnets that replay mainnet, with built-in simulations, analytics, and dev tools. 🧵 here’s how it works 👇
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this is for all web3 devs. introducing stagenets powerful EVM sandboxes for smart contract teams. private testnets that replay mainnet, with built-in simulations, analytics, and dev tools. 🧵 here’s how it works 👇
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7/ a typical workflow: → link your github repo → deploy contracts via your normal hardhat/foundry scripts → open the auto-created workspaces → track balances, yield, fees, storage over time → set up simulated user activity production-like staging env. every building block monitored.
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9/ tldr: stop testing on broken testnets or frozen forks. stagenets give you a private, live copy of mainnet with dashboards, simulations, and dev utilities built in. → contract.dev the staging env smart contracts always deserved.

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