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Starknet Devnet RS

Starknet Devnet RS is a Rust-based local testnet for Starknet development and contract testing, with support for forking mainnet or testnet contracts, account impersonation, L1-L2 interaction, predeployed accounts and tokens, block and time controls, and state snapshots.

Explore the practical guide ↓

Independent OpenViST project profile, based on linked sources.

Starknet Devnet RS — 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 it when Starknet development or testing calls for a local environment with control over network state, blocks, time, or repeatable snapshots.

Who it is for

  • Starknet developers testing contracts in a local environment.
  • Teams that need to explore contract behavior against forked mainnet or testnet state.
  • JavaScript test developers who want to use the official wrapper to install, spawn, and use Devnet in tests.

Documented uses

  • Run contract tests against a configurable local Starknet testnet.
  • Interact with contracts deployed on mainnet or testnet through forking.
  • Test account activity, L1-L2 interaction, and predeployed accounts or tokens.
  • Explore block- and time-dependent contract behavior.
  • Save, restore, or restart test state using snapshots, dump, and load operations.
Before you choose

Requirements & limits

The project is available as a public GitHub repository under the MIT license. The repository documents CLI configuration, Docker images, and a JavaScript wrapper.

  • Forking supports interaction with contracts deployed on either mainnet or testnet.
  • Block and time manipulation provide controls for scenarios that depend on chain progression.
  • Snapshot, dump, load, and restart features support saving and restoring test state.
  • Native blockifier execution is available through the optional cairo_native Cargo feature.

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

Build and run Devnet with native execution enabled

Build or run Starknet Devnet RS with its optional cairo_native Cargo feature.

Before you start

  • A Rust/Cargo environment capable of building the project from its repository.

Steps

  1. From the repository, build with the command below.

    Documented command
    cargo build --features cairo_native

  2. To run with the feature instead, use the command below and provide the desired Devnet arguments.

    Documented command
    cargo run --features cairo_native --

Expected outcome

Devnet is built or launched with cairo_native enabled; startup logs include `cairo_native enable` when the feature is enabled.

Guide limitations

  • This feature is optional.
  • Devnet is not a replacement for the official testnet; test on alpha-sepolia after using Devnet.
  • Devnet does not support the starknet_getStorageProof RPC method, and block roots are set to 0.
Documentation 1 ↗
Evidence and transparency

Sources & review

Official repository ↗
Source record details
Source availability
Active
Sources checked
11 October 2026
Original website title
starknet-io/starknet-devnet · Official homepage title · retained in its source language
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