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What are DevNets?

Tenderly DevNets are fully-featured local blockchain development environments that allow you to test and develop smart contracts in an isolated, controlled environment. DevNets provide you with:
  • Instant blockchain instances - Spin up a development network in seconds
  • Template-based deployment - Use pre-configured templates for common scenarios
  • JSON-RPC endpoints - Connect your development tools via standard RPC
  • Isolated testing environments - Each DevNet runs independently
DevNets are designed for development and testing. They provide a safe environment to experiment with smart contracts before deploying to mainnet or testnet.

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Key Features

Template Support

Apply pre-configured templates when spawning DevNets to quickly set up common scenarios

RPC Access

Get instant JSON-RPC endpoints to connect your development tools and frameworks

Project Integration

DevNets integrate with your Tenderly projects for seamless workflow

Quick Spawning

Launch new development networks on-demand with a single command

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Available Commands

The tenderly devnet command provides the following subcommands:

spawn-rpc

Spawn a DevNet RPC endpoint for blockchain development and testing

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Quick Start

Get started with DevNets in three simple steps:
1

Authenticate

Ensure you’re logged in to your Tenderly account:
tenderly login
2

Set up your project

Initialize or configure your Tenderly project:
tenderly init
3

Spawn a DevNet

Create a new DevNet RPC endpoint with a template:
tenderly devnet spawn-rpc --template my-template

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Use Cases

DevNets are perfect for:
  • Local Development - Test smart contracts without network fees or delays
  • Integration Testing - Validate contract interactions in a controlled environment
  • CI/CD Pipelines - Automate testing with disposable blockchain instances
  • Prototype Development - Experiment with new features before production deployment
  • Education - Learn smart contract development without risking real assets

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Configuration

DevNets can be configured using:
  • Command-line flags - Override settings for individual commands
  • tenderly.yaml - Store project-level configuration
  • Templates - Use pre-defined network configurations
For detailed configuration options, see the tenderly.yaml configuration guide.

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Next Steps

Spawn RPC

Learn how to create DevNet RPC endpoints

Configuration

Configure your DevNet settings

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