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evmtools

evmtools is an essential toolkit for Web3 and Ethereum developers, offering a comprehensive collection of browser-based utilities, a command-line toolkit, and interactive playgrounds for working with EVM-compatible networks. The site consolidates transaction decoders, data converters, hashing utilities, Merkle tree generators, gas and epoch converters, and ABI encoding tools to streamline debugging, testing, and smart contract interactions. It also provides wallet and signature helpers such as EIP-712 and ERC-191 signing, burner wallet generation, and a Contract UI for invoking contract functions safely during development. With multi-chain support across Ethereum, Layer 2s, and other EVM chains, evmtools aims to speed up daily development workflows, help diagnose on-chain issues, and simplify cross-chain testing and deployment.

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Introduction

Overview

evmtools is a focused collection of development utilities designed to accelerate Ethereum and EVM-compatible blockchain development. It combines web-based tools, interactive playgrounds, and a command-line toolkit to address common developer needs such as decoding transactions, converting between EVM data formats, generating cryptographic artifacts, and interacting with contracts. The platform emphasizes multi-chain compatibility and practical workflows so developers can debug, test, and experiment quickly across mainnet and Layer 2 networks.

Core Capabilities

  1. Transaction Decoding & Analysis: Decode Ethereum transaction data and function calls to inspect contract interactions, view parameters, and understand on-chain behavior for debugging and auditing.

  2. Data Conversion Tools: Convert between bytes, strings, hex, bytes32, and human-readable formats; compute cryptographic hashes (keccak256, sha256, etc.); and generate Merkle trees for airdrops and verification schemes.

  3. Smart Contract Utilities: Use ABI encoding/decoding, a Contract UI for invoking and testing functions, and developer helpers that simplify preparing low-level calls and payloads for transactions.

  4. Wallet & Signature Utilities: Generate burner wallets for ephemeral testing, produce and verify EIP-712 structured data signatures, and work with ERC-191 message signing patterns for off-chain authentication.

  5. Cross-Chain & Gas Tools: Convert gas units (wei, gwei, ether), estimate transaction costs across networks, and support development across Ethereum, Arbitrum, Polygon, BNB Chain, Optimism, Base, and many other EVM chains.

Supported Chains & Multi-Chain Workflow

evmtools intentionally supports a broad set of EVM-compatible networks so that your debugging and tooling workflows are portable between mainnet, Layer 2s, and sidechains. By providing chain-specific icons and quick selectors, the platform helps you ensure encoded transactions, gas calculations, and contract interactions match the semantics of the target network.

Developer Experience & Tool Categories

  • Interactive Playgrounds: Play with features such as the EIP-7702 Playground to experiment with account delegation and advanced transaction constructs without leaving the browser.

  • One-Click Utilities: Quick access to decoders, hashing utilities, serializers, and converters speeds repetitive tasks and reduces context switching between multiple tools.

  • CLI Integration (EVMCast): For power users and automation, EVMCast provides a command-line interface to run many of the same conversions, decodes, and contract interactions from scripts or CI pipelines, enabling reproducible terminal workflows.

Why Use evmtools

  1. Speed: Rapid, focused utilities remove friction from everyday developer tasks — from decoding obscure calldata to constructing Merkle proofs.

  2. Coverage: The suite covers a broad set of needs — cryptographic utilities, transaction decoding, ABI encoding, wallet generation, and a contract UI — reducing the need for multiple disparate tools.

  3. Accessibility: Browser-based tools and an optional CLI let both beginners and experienced engineers access functionality in the environment that fits their workflow.

  4. Multi-Chain Support: Native consideration for many EVM-compatible chains ensures that what you test locally maps correctly to the target network.

Getting Started & Recommendations

  • Start with the web-based transaction decoder and ABI encoder to inspect on-chain calls and prepare test payloads.

  • Use the EIP-7702 Playground to prototype account abstraction scenarios and the Burner Wallet for ephemeral testing.

  • Introduce EVMCast into your local toolchain or CI to automate decoding and conversion tasks as part of deployments or debugging pipelines.

Conclusion

evmtools is a practical, developer-focused toolkit that bundles many day-to-day Ethereum development tasks into a single accessible place. Whether you need to decode calls, generate cryptographic primitives, test contract functions via a Contract UI, or run automated conversions from the terminal, evmtools aims to simplify the work of building, debugging, and maintaining Web3 applications across multiple EVM networks.

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