# vyperlang/vyper

Pythonic Smart Contract Language for the EVM

Repository: https://github.com/vyperlang/vyper
Canonical: https://ross.abutalabs.com/products/vyper
Homepage: https://vyperlang.org
Language: Python
License: NOASSERTION
License Family: other
Topics: vyper, language, python, ethereum, ethereum-dapp
Last push: 2026-08-25T12:10:48+00:00

## Health v2 (maintenance only)
Score: 74/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 28, longevity 100
- inputs: {"age_days": 3582, "days_push": 8, "days_rel": 441, "gap_med": 54.0, "n_releases_24m": 3}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 5180, forks 915 (observed 2026-08-28T04:09:11.807183+00:00)

## What it is
Vyper is a Pythonic smart contract language that compiles to Ethereum Virtual Machine (EVM) bytecode, emphasizing security, simplicity, and auditability. It ships as a Python-based compiler CLI that generates bytecode, ABI, and IR from .vy contract files.

## Use cases
- write secure ethereum smart contracts in a python-like language
- compile vyper contracts to evm bytecode and abi
- alternative to solidity with built-in overflow and reentrancy protection
- audit-friendly smart contract development
- build erc20, erc721, and erc4626 tokens on ethereum
- learn smart contract development coming from python

## When to choose
- you want pythonic syntax for ethereum contracts
- security and auditability matter more than feature richness
- you need bounds checking, reentrancy guards, and strong typing enforced by the compiler
- you prefer decidable gas costs and no inline assembly

## When to avoid
- you need solidity's full feature set, modifiers, or inheritance
- you target non-EVM chains
- you require the largest ecosystem of tooling and community examples
- you want maximum language expressiveness over simplicity

## Facets
- artifact type: cli-tool
- maturity: active
- function: compiler, programming-language, security, cli
- domain: blockchain, programming-languages, compilers, security, developer-tools
- platform: python, cli, cross-platform
- tags: ethereum, evm, smart-contracts, solidity-alternative, web3, bytecode-compilation, abi-generation, cryptocurrency, docker

## Member repositories
- vyperlang/vyper (main) score 74

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:11.807183+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:01:48.371131+00:00, confidence not recorded.
  - readme: https://github.com/vyperlang/vyper (fetched 2026-08-28T04:09:11.807183+00:00, sha 9ede66623805)
  - homepage: https://vyperlang.org (fetched 2026-08-29T08:55:45.655947+00:00, sha bf6f5f2fb63a)
  - site_page: https://docs.vyperlang.org/en/latest (fetched 2026-08-29T08:55:45.665444+00:00, sha d68b61e0570a)
  - registry_pypi: https://pypi.org/pypi/vyper/json (fetched 2026-08-29T08:55:45.667255+00:00, sha 367ee2106e3c)
- Data as of 2026-08-30T08:39:29.467469+00:00.