Enabling Continuous Testing for Web3
A production-ready sandbox for testing your DApp.

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What is BuildBear
BuildBear is a revolutionary DevTool designed from the ground up to ensure your creation is production-ready from the get-go. Our robust platform empowers you with continuous, automated testing powered by the lightning-fast Phoenix Engine. Collaborate seamlessly with your team in the cloud, and invite your community to join the beta testing party. Build with unwavering confidence, knowing your DApp is battle-tested and ready to conquer the world. Welcome to the future of DApp development, welcome to BuildBear.
What makes BuildBear so powerful?
Automated Cloud Testing
Say goodbye to the hassles of manual testing. With BuildBear, your testing is automated whenever you make code updates. Enjoy effortless testing backed by detailed and actionable test reports.
Stress Test your DApps
BuildBear empowers you to effortlessly create an optimized testing environment for your DApp, ensuring precise testing in every conceivable scenario.
Keep Everything Private
BuildBear ensures the confidentiality of your DApp testing. Public Testnets are not built with privacy in mind, as the transparency of these networks exposes all contracts and transactions to public scrutiny, posing a potential risk to sensitive information.
Test as if you’re on Mainnet
Utilize BuildBear to conduct thorough Mainnet testing for your DApp, safeguarding against real-world consequences while troubleshooting potential problems.
Backed By
TestingTestingTestingTestingTesting
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Kris Kazor

Creator of Dev Tooling @dethcrypto | Delegate @optimsimFND and @HopProtocol

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Christopher Verceles

CEO and Senior Solidity Engineer | Technical Advisor to Asian Development Bank | Distributed Technology

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Anton Buenavista

Senior Solidity Engineer and Head of Ecosystem Development at Pendle

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Ken Fromm

Managing Director at BuildETH

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Zong Xi SIA

Investment Director @CocoonCapital | Venture Capital | Strategy | Business Development | Fundraising

Services BuildBear Provides
Testnet as a Service

Create Forked Sandbox from any of the following EVM and EVM-compatible chains such as :

Ethereum, Polygon, Arbitrum, Optimism, Binance, zkEVM Polygon, Linea, Gnosis and many more.

Cloud Enabled Sandbox

With our Cloud-enabled Sandbox, your team can seamlessly collaborate on projects within a secure and shared environment. This enables you to deploy your DApp in your private sandbox with your Frontend and Backend integrated, thus, letting you test your DApp with your CXOs in one deploy.
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Plugins

BuildBear Sandbox come with a plethora of Web3 Ecosystem Plugins. Gelato Web3 Functions, Chainlink VRF, Safe Offline MultiSig Signing and many more. Now test your DApp at a Team level, with Mainnet State and other hybrid primitives.
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Scalable, depending on your testing requirements

BuildBear Sandbox effortlessly adapt to your DApp's needs, automatically scaling resources as your usage demands. This ensures a consistently smooth testing experience, regardless of how intensively you use the Sandbox.
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Privacy Enabled

Our shared access features enable you to seamlessly collaborate with teammates on sandbox while retaining complete control. Only your team can access sandbox, smart contracts, and transaction data, ensuring your work remains secure and private.
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Unrestricted Native and ERC20 Tokens Faucet

Experience instant, unrestricted distribution of Native and ERC20 tokens for all your testing needs with BuildBear's Faucet, providing seamless token access and enhancing testing efficiency. Saving you the most important asset: Time!
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DevTool Support

BuildBear Sandbox are already integrated and can be used from other Web3 DevTools such as : RemixIDE, Scaffold-ETH, Cookbook, Catapulta, Loki.Code, SolidityScan.
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Customisation Sandbox

Users can override Gas estimation, allow unlocked accounts, allow unlimited contract size, and set specific mining windows to meet their requirements, making it easier to create a custom Testnet that suits their needs.
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Mainnet State

BuildBear Sandbox support mainnet state forking; thus making it easier for you to test with your team in a near real world testing environment.
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Explorer

A Private block-explorer for you, your team and your community for testing; thus, easier investigating your DApp's performance.
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Chains we support
https://strapi.buildbear.ioArbitrum.svghttps://strapi.buildbear.ioAvalanche.svghttps://strapi.buildbear.ioBinance.svghttps://strapi.buildbear.ioEthereum.svghttps://strapi.buildbear.ioFantom.svghttps://strapi.buildbear.ioGnosisChain.svghttps://strapi.buildbear.ioLinea.svghttps://strapi.buildbear.ioOmni.svghttps://strapi.buildbear.ioOptimism.svghttps://strapi.buildbear.ioPolygonLight.svg
Introducing Phoenix Engine.
The Powerhouse of BuildBear.
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Recent Success Stories
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Success Story

Deploying Smart Contracts Has Never Been This Easy: BuildBear Labs and Cookbook.dev, A Year In

Cookbook.dev is a smart contract library designed to simplify and accelerate blockchain development. It offers a wide selection of ready-to-deploy contract templates that follow established coding and security best practices, enabling developers to implement blockchain functionality without building contracts from scratch. With a user-friendly interface, Cookbook.dev makes it easy for both Web3 newcomers and experienced developers to access, customize, and deploy smart contracts, facilitating a smoother entry into blockchain development and reducing the technical overhead associated with smart contract deployment.

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Success Story

Treehouse’s Web3 Revolution with BuildBear Sandboxes: A Success Story in DeFi Development

In the fast-paced world of Web3, innovation and speed are essential. For Treehouse, a groundbreaking protocol that is pioneering the next wave of decentralized finance by building the Decentralized Fixed Income Layer, launching their product in the competitive DeFi space required not only top-tier development but also a reliable testing environment. They found the solution with BuildBear Labs, a team-wide deterministic sandbox that replaced public testnets and streamlined their testing and dapp integration process. After launching their protocol, they achieved a TVL of $80 million within just three weeks, which helped Treehouse quickly rise as a leader in the Web3 ecosystem.

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