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What is hevm?

The hevm project is a specialized version of the Ethereum Virtual Machine (EVM) that focuses on symbolic execution, unit testing, and the debugging of smart contracts. Developed by DappHub, it works flawlessly with the tools provided by the same creators. The hevm command line interface allows users to execute smart contracts symbolically, perform unit tests, and interactively debug contracts while showing the corresponding Solidity source code, as well as execute any arbitrary EVM code. It enables calculations to be performed either using a local state set up within a testing framework or by accessing live networks through RPC calls. Users can start symbolic execution with defined parameters to find assertion violations and have the flexibility to customize certain function signature arguments while leaving others as abstract. Importantly, hevm employs an eager approach to symbolic execution, aiming to investigate all branches of the program right from the outset. This thorough methodology significantly improves the reliability and robustness of the processes involved in smart contract development and testing. Moreover, the integration of hevm with other DappHub tools enhances the overall development experience for blockchain developers.

What is Tayt?

Tayt is a specialized fuzzer tailored for testing StarkNet smart contracts. For optimal performance, it is recommended to operate within a Python virtual environment. Once started, users will encounter a set of properties that require validation, along with the external functions used to generate various transactions. In cases where any property is breached, a comprehensive call sequence will be provided, detailing the order of function calls, the parameters used, the caller's address, and any triggered events. Furthermore, Tayt enables users to assess contracts that have the ability to deploy additional contracts, significantly increasing its effectiveness in smart contract evaluation. This feature serves as a critical asset for developers aiming to verify the strength and security of their smart contract designs while streamlining the testing process. The versatility of Tayt positions it as an invaluable resource in the evolving landscape of blockchain development.

Media

Media

Integrations Supported

Ethereum
Python
Solidity
Starknet

Integrations Supported

Ethereum
Python
Solidity
Starknet

API Availability

Has API

API Availability

Has API

Pricing Information

Free
Free Trial Offered?
Free Version

Pricing Information

Free
Free Trial Offered?
Free Version

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Company Facts

Organization Name

DappHub

Company Website

github.com/dapphub/dapptools/blob/master/src/hevm/README.md

Company Facts

Organization Name

Crytic

Company Location

United States

Company Website

github.com/crytic/tayt

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Categories and Features

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