BuildBear Labs
@_BuildBear
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A Better Way to Build π οΈ | Production-grade testing environments | βThe Github of Web3β | Trusted by @consensys to @chainstackHQ w/ 200k+ active sandboxes
Singapore
Joined August 2022
π οΈ What is BuildBear? BuildBear is your all-in-one development platform to deploy, test, and debug smart contracts in a private, production-like environment. Spin up custom Sandboxes, mint tokens, fork mainnets, verify contracts, trace and debug transactions, all from one
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Developers asked. We delivered. Monad support is now live on BuildBear ! Custom testnets. Faster iteration. Zero friction. Letβs build.
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Black Friday drop π 40% OFF for 12 months on BuildBear Premium Code: BLACKFRIDAY2025 π https://t.co/rlXHdMguxN RT for dev karma π
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Cheaper math, smaller bytecode, faster ZK proofs β‘ EIP-7939 brings the CLZ opcode to the EVM, a small change with huge impact. Dive in π https://t.co/UfVS7FyXvP
buildbear.io
EIP-7939 introduces a new CLZ opcode that counts leading zero bits in a 256-bit word. This enables cheaper math operations, compression, ZK circuits, and more efficient bytecode.
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Say hello to the next era of autonomous agents: ERC-8004 A lightweight standard for: β’ On-chain identity (ERC-721) β’ Reputation feedback β’ Third-party validation The trust layer for agent economies open, portable, and verifiable. Dive into the full breakdown β
buildbear.io
ERC-8004 proposes a lightweight, registry-based standard for discovering, identifying, and trusting autonomous agents in decentralized ecosystems using EVM-based infrastructure.
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Say hello to the next-gen web payment layer: x402! π³ No logins. No invoices. No heavy stacks. Just one line of middleware and crypto payments become part of HTTP. Dive into our blog to see how you can integrate frictionless payments on the web β
buildbear.io
x402 is an open protocol that turns the HTTP 402 status code into a simple, composable way to accept crypto payments in web apps , no accounts, no OAuth, no invoices.
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Solidity is evolving! The team just announced Core Solidity, a leaner, more powerful redesign of the language with a new type system and features like: β’ Generics β’ Traits (typeclasses) β’ Hindley-Milner type inference β’ Lambdas & algebraic data types β’ Exhaustive
soliditylang.org
Posted by Solidity Team on October 21, 2025
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There was a major AWS outage today impacting multiple apps and services. BuildBear systems remained stable and fully available during the incident. Reliability isnβt luck, itβs design. π₯
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Devs, this oneβs for you π BuildBearβs new API Playground is live! β‘οΈ Test Ethereum JSON-RPCs π Explore the JSON-RPC docs interactively π§° Try our special RPC extensions Start learning & building smarter π https://t.co/BRZSnnHa7i
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In short: BuildBear docs are no longer just human-readable. Theyβre AI-readable too. Docs β Data β Knowledge β Context β Code π«
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π‘ Why it matters: AI tools (ChatGPT, Copilot, etc.) can now read BuildBear docs directly Cleaner content β better AI answers Sets the stage for AI-powered assistants, RAG, and more
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βοΈ What we did: Each docs page (like /get-started) now has a .md equivalent with full markdown structure. Example: π https://t.co/tBgueLrHeN π
buildbear.io
BuildBear is a specialized platform for DApp development and testing. Developers can create a personalized private testnet sandbox for various EVM and EVM-compatible blockchain networks.
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π§ The future of developer documentation is AI-native. BuildBear docs are now LLM-ready by default .Every page has a .md version built for large language models. Hereβs why this matters π
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Foundry lets you test time-based logic with vm.warp(). BuildBear takes it a step further, you can actually advance time, interact with your contracts in that future state, and visualize the effects on-chain. In our new tutorial, we show exactly how BuildBear does it. You will
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βοΈ Check out our latest blog entry from our friends at @_BuildBear π In this post, you'll learn all about the BuildBear platform and how it can help you with dApp development and testing! Read the blog post today to up your dApp building game (link in the post below) π
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BuildBear's Chainlink Data-Feed Plugin allow granular control, you can install the plugin and only subscribe to the price feeds, that your contracts will refer to. We created a tutorial to showcase just this where we create a minimal event-driven cross-chain bridge (WETH β
buildbear.io
Build a minimal event-driven bridge (WETH β USDT) using Foundry and Node relayer, fully built in BuildBear Mainnet Sandboxes with the Chainlink DataFeed Plugin.
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π Great to connect with the brilliant minds shaping the future of Web3 at #TOKEN2049! Our CEO, Dipesh Sukhani, had the pleasure of meeting the Founder of @ChainPatrol . Weβre excited about the collaboration ahead and working together for a safer blockchain ecosystem. π‘π If
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GM web3 fam βοΈ Our cofounder & CEO @dipesh_sukhani is on the ground at #Token2049 ! Come say hi and connect with the team IRL π
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