contract.dev

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

[contract.dev @contractdotdev]

🚨BREAKING: WE ASKED DEVS WHY TESTNETS SUCK!

[Neelesh Balasubramani @NeeleshW3]

The best thing to do on a weekend is play board games

[contract.dev @contractdotdev]

@lifiprotocol @xStocksFi Any DeFi product now composing with xStocks through https://t.co/mJOZH5JivF is inheriting a new set of oracle and settlement dependencies.

How those contracts behave under real market conditions pre-deploy is the part worth thinking about early

[contract.dev @contractdotdev]

@arbitrum @Ostium @kaledora Perp DEXs with commodity and equity exposure live or die on how their risk models behave under real market conditions.

That kind of contract logic needs serious pre-deploy stress testing exactly what we've been building at https://t.co/GaporF66e3

[contract.dev @contractdotdev]

@maraoz The asymmetry is real and AI is making it worse. The only answer is raising the floor on pre-deploy rigor testing contracts under real mainnet conditions, not sanitized testnets.

That's exactly what we've been building at https://t.co/GaporF66e3

[contract.dev @contractdotdev]

@arbitrum @oobit Big W for Oobit and Arbitrum. Programmable finance reaching 150M merchants is a number worth celebrating

[contract.dev @contractdotdev]

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.

https://t.co/qxak212Vah. Not a testnet. Not a fork. A production grade staging env for smart contracts.

[contract.dev @contractdotdev]

. https://t.co/LljBEMlwoV 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.

[contract.dev @contractdotdev]

When you can test your project in real conditions before mainnet.

[contract.dev @contractdotdev]

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.

[Arbitrum @arbitrum]

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

[contract.dev @contractdotdev]

Fully testing a smart contract on a live mainnet fork in under 2 mins.

Deploy, simulate 10k txs, check dashboards all on https://t.co/klS6Lg2EAi.

The best part? No fake liquidity. No frozen blocks. Just real mainnet conditions.

[contract.dev @contractdotdev]

Happy weekend guys

This has been one of our best weeks so far.

[contract.dev @contractdotdev]

Fully testing a smart contract on a live mainnet fork in under 2 mins.

Deploy, simulate 10k txs, check dashboards all on https://t.co/klS6Lg2EAi.

The best part? No fake liquidity. No frozen blocks. Just real mainnet conditions.

[contract.dev @contractdotdev]

@Oge2357 Dw us

[contract.dev @contractdotdev]

congrats on the launch. multi-currency contract logic with live fx flows is one of the trickier things to validate before going live at https://t.co/LljBEMlwoV we give teams private testnets that follow real network state so contracts get tested in actual production conditions. could be useful as more teams start building on arc

[contract.dev @contractdotdev]

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 https://t.co/qxak213sZP. 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.

https://t.co/qxak213sZP is the fix.

[contract.dev @contractdotdev]

🚨BREAKING: WE ASKED DEVS WHY TESTNETS SUCK!

[contract.dev @contractdotdev]

@Swagtimus What is just something that might help? Would love to talk in Dw

[contract.dev @contractdotdev]

@anabelmtz86 @0x_beryl True if you want more details would love to have a great chat in dw

[contract.dev @contractdotdev]

@kipupwidanshika I can feel the pain in the msg.

[contract.dev @contractdotdev]

🚨BREAKING: WE ASKED DEVS WHY TESTNETS SUCK!

[contract.dev @contractdotdev]

@adityakrx Real conditions matter.🤝🫡

[contract.dev @contractdotdev]

@cryptorboe Too real 🫡