Blockchain Transaction Simulator by Crypto APIs

Simulate transactions and know in advance how they will behave onchain

The Crypto APIs Blockchain Transaction Simulator allows you to simulate transactions on multiple EVM blockchain mainnet networks, providing deeper insights on the actual transaction behaviour. Minimize losses, optimize gas consumption, test various transaction scenarios, perform bundle transaction testing, take strategic actions, and improve transaction security.

Key Functionalities Of Crypto APIs

Blockchain Transaction Simulator

Every enterprise client has unique use cases, requirements, and levels of service customization. No matter what you need you're in the right place. Explore our solutions below or share your specific requirements with us.

Reduce Network Fees

Optimize gas fees by adjusting transaction parameters. Calculate transaction fees accurately, manage gas consumption expectations, and eliminate unnecessary gas expenses.

Prevent Gas Failure

Running out of gas or high gas fees can result in costly failures. Identify and prevent these issues before they occur with our Blockchain Transaction Simulator.

Detect Еrrors & Improve Security

Detect and prevent transaction failures and reverts even in the preparation stage of transactions. Identify potential risks in transactions, smart contracts, and other blockchain activities associated with overall stability and security.

Realistic Mainnet Simulation

Experience authentic mainnet results without the risk or expense of actual on-chain transactions. Gain precise insights into transaction behavior with our risk-free simulation.

Improve User Experience

Provide deeper and meaningful insights to your dApp users regarding their interactions with your system. Create a simplified feedback to enhance users experience and engagement.

Efficient DApp
Testing & Optimization

Simulate transactions to assess confirmation times, fees, and errors. Ensure DApps and smart contracts functionalities are intact, and accelerate development by fixing identified bugs before deployment. Verify inputs, outputs, and transaction structure to guarantee optimal performance.

Request additional blockchains

Be among the first to access our multi-protocol transaction simulator. Test EVM transactions, optimize gas fees, and identify security flaws.

Get early access

What we support

Mainnets and Testnets

ETH

Ethereum

BSC

BNB Smart Chain In development

MATIC

Polygon In development

TRX

TRON In development

SOL

Solana In development

AVAX

Avalanche In development

ARB

Arbitrum One In development

OPTIMISM

Optimism In development

GNO

Gnosis In development

STRK

Starknet In development

AOA

Aurora In development

TBA

Base In development

SCRL

Scroll In development

sui

Sui In development

View all supported

What are you up to?

Our powerful blockchain product suite helps businesses and institutions build the ecosystem of tomorrow.

View all use cases

Crypto Wallet

Hardware Wallet

Crypto Exchange

Crypto PSP

Digital Banks

Crypto Lending

Crypto Custody

Crypto Taxes & Accounting

Frequently Asked Questions

Which blockchains does the CryptoAPIs Transaction Simulator support?

The Transaction Simulator supports EVM blockchains only. You can simulate transactions on EVM mainnet and testnet networks to preview how they will behave before broadcasting. Non-EVM chains such as Bitcoin, Solana, and XRP are not covered by the simulator.

Does the transaction-simulator API support Solana?

No. The simulator is EVM-only, so Solana transactions cannot be simulated through it. Only EVM-based networks (mainnet and testnet) are supported. If you need another network, the page provides a 'Request additional blockchains' option.

Can I estimate gas and catch transaction reverts before broadcasting?

Yes. Simulating an EVM transaction lets you preview its behavior, estimate gas usage, and detect failures or reverts before it ever hits the chain. This helps you optimize gas fees and prevent costly out-of-gas or reverted transactions. It runs against realistic mainnet state without spending real funds.

How does the simulator fit with preparing and broadcasting a transaction?

The simulator works alongside CryptoAPIs' Prepare Transactions and Blockchain Fees products for EVM chains. A typical flow is to prepare an EVM transaction, simulate it to confirm expected behavior and fees, then broadcast the signed transaction. This lets you validate inputs, outputs, and structure before going on-chain.

Is the Transaction Simulator generally available or in early access?

The live page presents the multi-protocol simulator as early access, inviting users to 'be among the first' to test EVM transactions. In practice, EVM transaction simulation is the capability available today. Additional protocols are not yet available, though you can request other blockchains from the page.

Transaction Simulator

Simulate transactions and know in advance how they will behave onchain

Key Functionalities Of Crypto APIs