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BuildBear Labs @_BuildBear

A Better Way to Build 🛠️ | Production-grade testing environments | “The Github of Web3” | Trusted by @consensys to @chainstackHQ w/ 200k active sandboxes

Joined August 2022
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  • Followers 1,009
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BuildBear Labs
@_BuildBear
5 May 2025
🛠️ 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 powerful dashboard. Let’s walk through it 👇
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The future of dev is agentic, your tools should be too. BuildBear CLI is here. 🚀 Spin up sandboxes, run flows, debug contracts, and automate everything from the terminal. No UI friction. Just pure velocity. Build faster, debug smarter. Now from your terminal. Get started: buildbear.io/docs/cli/workfl…

Docs - Common Workflows - BuildBear Labs

End-to-end examples for typical development scenarios

buildbear.io
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Developers asked. We delivered. Monad support is now live on BuildBear ! Custom testnets. Faster iteration. Zero friction. Let’s build.
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Black Friday drop 👀 40% OFF for 12 months on BuildBear Premium Code: BLACKFRIDAY2025 👉 app.buildbear.io/settings/bi… RT for dev karma 💙
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Cheaper math, smaller bytecode, faster ZK proofs ⚡ EIP-7939 brings the CLZ opcode to the EVM, a small change with huge impact. Dive in 👇 buildbear.io/blog/eip-7939

EIP-7939: CLZ Opcode for Cheaper Bit-Level Math and ZK Proofs - BuildBear Labs

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: • On-chain identity (ERC-721) • Reputation feedback • Third-party validation The trust layer for agent economies open, portable, and verifiable. Dive into the full breakdown → buildbear.io/blog/erc-8004

ERC‑8004: Trustless Agents with Reputation, Validation & On‑Chain Identity - BuildBear Labs

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! 💳 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 → buildbear.io/blog/x402-middl…

x402: A Web-Native Protocol for Frictionless Crypto Payments - BuildBear Labs

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: • Generics • Traits (typeclasses) • Hindley-Milner type inference • Lambdas & algebraic data types • Exhaustive pattern matching A new language, built on lessons from the old one. Still Solidity, but formally specified, minimal, and community-driven. Read the full roadmap → soliditylang.org/blog/2025/1…

The Road to Core Solidity | Solidity Programming Language

Posted by Solidity Team on October 21, 2025

soliditylang.org
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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 isn’t luck, it’s design. 🔥
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Devs, this one’s for you 👇 BuildBear’s new API Playground is live! ⚡️ Test Ethereum JSON-RPCs 📚 Explore the JSON-RPC docs interactively 🧰 Try our special RPC extensions Start learning & building smarter 👉 buildbear.io/docs/json-rpc
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🧠 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. Here’s why this matters 👇
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💡 Why it matters: AI tools (ChatGPT, Copilot, etc.) can now read BuildBear docs directly Cleaner content → better AI answers Sets the stage for AI-powered assistants, RAG, and more
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In short: BuildBear docs are no longer just human-readable. They’re AI-readable too. Docs → Data → Knowledge → Context → Code 💫
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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 learn to test and execute real time-gated flows like token locking and rewards distribution mechanism, end to end in this new step-by-step guide Checkout the full tutorial here: buildbear.io/docs/tutorials/…
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buildbear.io/docs/tutorials/…

Docs - Build Token Locking & Signed Reward Claims with BuildBear's Time Advancement Plugin -...

A hands-on tutorial for creating a QuestManager contract that locks tokens, verifies admin signatures, and distributes rewards. Test real on-chain time-based flows with BuildBear’s Time Advancement.

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BuildBear Labs retweeted
Developer DAO (🧱, 🚀)
@developer_dao
7 Oct 2025
✏️ Check out our latest blog entry from our friends at @_BuildBear 👉 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) 👇
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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 ⇄ USDT) using Foundry and a Node relayer, fully powered by BuildBear Mainnet Sandboxes. Checkout the tutorial here: buildbear.io/docs/tutorials/…

Docs - Build a Cross-Chain Bridge with BuildBear Mainnet Sandboxes & Data Feeds - BuildBear Labs

Build a minimal event-driven bridge (WETH ⇄ USDT) using Foundry and Node relayer, fully built in BuildBear Mainnet Sandboxes with the Chainlink DataFeed Plugin.

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🌐 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 . We’re excited about the collaboration ahead and working together for a safer blockchain ecosystem. 💡🔒 If you’re at the venue, let’s connect! 🚀
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GM web3 fam ☀️ Our cofounder & CEO @dipesh_sukhani is on the ground at #Token2049 ! Come say hi and connect with the team IRL 🚀
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