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Ape Vyper

Ape Vyper is a Python plugin for the Ape Framework that connects Ape to VVM for compiling Vyper smart-contract source files.

Explore the practical guide ↓

Independent OpenViST project profile, based on linked sources.

Ape Vyper — OpenViST project profile in Developer Tools.
OpenViST project illustration. See the linked sources for product details.
Understand the project

Practical overview

When it fits

Use Ape Vyper when a development workflow already uses Ape and needs to compile Vyper contracts through VVM.

Who it is for

  • Developers building smart contracts in Vyper who use Ape Framework.
  • Ape project maintainers who need Vyper compiler version or EVM-rule configuration.

Documented uses

  • Compile `.vy` files in an Ape project's contracts folder into Ape ContractTypes.
  • Select Vyper compiler versions using pragmas, configuration, or VVM commands.
  • Flatten a contract and imported interfaces into a single file for publishing or validation.
Before you choose

Requirements & limits

The repository documents installation through pip or from source and requires Python 3.10 or later. It is licensed under Apache-2.0.

  • This is an Ape Framework plugin, not a standalone Vyper development environment.
  • Vyper compiler versions can be managed through the ape vyper vvm commands.
  • Contract flattening is experimental.
  • Standalone .vyi files create ABI-only ContractTypes that are not deployable, but can be used from Ape scripts to interact with deployed contracts.

Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.

Source-based practical guide

Install Ape Vyper and compile project contracts

Install the plugin and compile Vyper source files in an existing Ape project.

Before you start

  • Python 3.10 or later
  • An Ape project with Vyper contract files using the .vy extension

Steps

  1. Install the plugin with the command below.

    Documented command
    pip install ape-vyper

  2. Place .vy contract files in the Ape project's contracts folder.

  3. From the project root, run ape compile.

Expected outcome

The project's Vyper files compile into Ape ContractTypes that can be deployed and interacted with in Ape.

Guide limitations

  • Interface source files cannot be compiled directly; place them in an interfaces directory under the contracts folder for imports.
  • The guide covers compilation, not deployment.
Documentation 1 ↗
Source-based practical guide

Flatten a Vyper contract for publishing or validation

Combine a Vyper contract and its imported interfaces into one flattened file.

Before you start

  • Ape Vyper installed in an Ape development environment
  • A Vyper contract file in the project

Steps

  1. From the project context, identify the source contract path and desired output path.

  2. Run ape vyper flatten contracts/MyContract.vy build/MyContractFlattened.vy, adjusting the paths for the files in use.

Expected outcome

A flattened Vyper file combining the contract and imported interfaces is written to the specified output path.

Guide limitations

  • The repository labels contract flattening experimental.
Documentation 1 ↗
Evidence and transparency

Sources & review

Official repository ↗
Source record details
Source availability
Active
Sources checked
14 October 2026
Original website title
ApeWorX/ape-vyper · Official homepage title · retained in its source language
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