Vyper Compiler

WHAT IT DOES

Vyper Compiler is a developer tool that simulates the compilation of Vyper smart contract code. Enter your Vyper source code (a Pythonic language for Ethereum), select the Vyper version (0.2.16 to 0.3.10), and the tool simulates compilation — extracting the contract name, generating a simulated ABI and bytecode, detecting functions, and reporting metadata like bytecode size, line count, and decorator usage. This is essential for developers learning Vyper, testing contract structure, preparing code for deployment, or understanding how Vyper code translates to EVM bytecode.

HOW TO USE

Connect your wallet using the BGWallet bridge (MetaMask or any Web3 wallet). Paste your Vyper code in the text area — include the @version pragma and your contract definitions. Select the Vyper version — options range from 0.2.16 to 0.3.10. Click "Compile" to simulate compilation. The tool parses your code, extracts the contract name, detects functions (using def statements), and generates a simulated ABI and bytecode. Results display the compilation status, Vyper version, contract name, bytecode size, the ABI (JSON), bytecode preview, and metadata including functions found, line count, and presence of @version and @external/@public decorators. The output is designed to help you understand your contract's structure before deploying.

TECHNICAL MECHANISM

The tool simulates Vyper compilation using client-side parsing and code generation. It parses the Vyper source to extract the contract name (using regex patterns for "contract" declarations or function names), detects functions (def statements), and checks for decorators (@version, @external, @public). It generates a simulated bytecode string (hexadecimal) with a size proportional to the number of lines in the source, and a placeholder ABI based on detected functions. The tool does not actually compile Vyper code — it relies on pattern matching to simulate the output. The bytecode and ABI are generated deterministically but are not valid EVM bytecode or real ABIs. All operations are performed client-side — no data is stored or transmitted. The tool does not require a local Vyper installation.

WHAT IT CANNOT SEE

The tool cannot actually compile Vyper code without a local Vyper installation — the compilation is a simulation. It cannot deploy compiled bytecode without a wallet and network connection — the tool does not support deployment. It cannot provide full Vyper language server or IDE features (auto-completion, type checking, linting, etc.). It cannot generate ABI or bytecode for complex Vyper contracts beyond simulation — the generated outputs are placeholders. It cannot check code for EVM version compatibility without configuration — the tool does not verify compiler settings. It cannot detect syntax errors or type mismatches — the simulation assumes valid code. It cannot optimize or validate the generated bytecode. The tool is read-only and does not sign any transactions.

PLEASE NOTE

This tool works exclusively with EVM-compatible chains for the wallet connection, but the Vyper compiler simulation is chain-agnostic and works with any Vyper code. Solana, Tron, Starknet, SUI, TON, Aptos, Bitcoin, Cosmos, and XRP are not supported for wallet connection but the simulation works regardless. The tool provides a simulation of Vyper compilation — for real compilation, use the official Vyper compiler locally. The tool does not store any data — all operations are performed client-side. The tool is provided as-is with no warranty or liability. Always verify compiled output with a real Vyper installation before deployment.