Website of Ben Greenberg, a Developer Advocatehttps://bengreenberg.dev/https://bengreenberg.dev/blog/what-the-new-arbos-will-change-for-arbitrum-app-developers/https://bengreenberg.dev/blog/what-the-new-arbos-will-change-for-arbitrum-app-developers/Stylus contracts are getting a 96 KB code size limit. That is four times what a Solidity contract gets, and four times what Stylus allows today. The DAO approved ArbOS 61 Elara, which builds onFri, 07 Aug 2026 00:00:00 GMTblockchainhttps://bengreenberg.dev/blog/what-would-change-if-arbitrum-replaced-its-state-tree/https://bengreenberg.dev/blog/what-would-change-if-arbitrum-replaced-its-state-tree/Reading one account onchain can cost seven or eight separate lookups on disk. Writing one rewrites a whole chain of records leading back to a single hash. That is fundamental to the core path of eachThu, 06 Aug 2026 00:00:00 GMTblockchainhttps://bengreenberg.dev/blog/what-a-good-agents-md-should-teach-an-agent-on-day-one/https://bengreenberg.dev/blog/what-a-good-agents-md-should-teach-an-agent-on-day-one/I hit this last week while working inside my own OpenClaw workspace: the agent had access to the...Mon, 03 Aug 2026 00:00:00 GMTaihttps://bengreenberg.dev/blog/from-first-run-drop-off-to-first-useful-agent-run/https://bengreenberg.dev/blog/from-first-run-drop-off-to-first-useful-agent-run/I keep coming back to the same onboarding question: what happens in the first 10 minutes? For agent...Thu, 16 Jul 2026 00:00:00 GMTaitutorialhttps://bengreenberg.dev/blog/the-first-robinhood-chain-app-you-should-build-is-not-another-token/https://bengreenberg.dev/blog/the-first-robinhood-chain-app-you-should-build-is-not-another-token/I built a @RobinhoodApp Chain fully functioning demo app around a stock index basket for a reason. Deploying Solidity with Foundry, reading with viem, and writing with wagmi is the path you alreadyThu, 09 Jul 2026 00:00:00 GMTpostshttps://bengreenberg.dev/blog/this-is-why-the-smartphone-failed-in-the-early-1990s/https://bengreenberg.dev/blog/this-is-why-the-smartphone-failed-in-the-early-1990s/General Magic nearly built the smartphone in the early 1990s, and that is what makes the story so useful. The lesson is not that they lacked imagination. It is that imagination without constraintWed, 01 Jul 2026 00:00:00 GMTpostshttps://bengreenberg.dev/blog/your-solana-code-does-not-need-a-rewrite-to-reach-ethereum-users/https://bengreenberg.dev/blog/your-solana-code-does-not-need-a-rewrite-to-reach-ethereum-users/You already made the hard bet: Rust, explicit accounts, serious state design, and performance-sensitive programs. StylusPort exists because that work should not be trapped on one runtime. If you areTue, 30 Jun 2026 00:00:00 GMTblockchainhttps://bengreenberg.dev/blog/verifying-what-your-ai-provider-actually-ran/https://bengreenberg.dev/blog/verifying-what-your-ai-provider-actually-ran/When you call an AI API, you are trusting the provider on faith. You ask for GPT 5.5, you get billed for GPT 5.5, and you have no way to check what actually ran on the GPU. Token counts and outputWed, 27 May 2026 00:00:00 GMTaihttps://bengreenberg.dev/blog/shipping-x402-on-aws-and-arbitrum/https://bengreenberg.dev/blog/shipping-x402-on-aws-and-arbitrum/tl;dr I built an end-to-end x402 demo on Arbitrum One using AWS CloudFront + Lambda@Edge on the provider side and the CDP facilitator for settlement. The repo is at github.com/hummusonrails/arbitru...Wed, 29 Apr 2026 00:00:00 GMTblockchainhttps://bengreenberg.dev/blog/cloudflare-just-made-x402-a-compliance-checkbox/https://bengreenberg.dev/blog/cloudflare-just-made-x402-a-compliance-checkbox/tl;dr Agentic payments are not a nice to have anymore, they are becoming a requirement. Arbitrum provides the execution layer to make this reliable and performant. x402 is just the beginning of whatFri, 24 Apr 2026 00:00:00 GMTblockchainhttps://bengreenberg.dev/blog/your-backend-code-is-a-black-box-it-doesn-t-have-to-be/https://bengreenberg.dev/blog/your-backend-code-is-a-black-box-it-doesn-t-have-to-be/Your API takes inputs and returns outputs. The logic in between? Nobody outside your team can verify it. Regulators read the documentation you wrote about it. Partners call your endpoint and trust theWed, 01 Apr 2026 00:00:00 GMTpostshttps://bengreenberg.dev/blog/you-re-flying-blind-on-claude-code-spending-i-built-a-window/https://bengreenberg.dev/blog/you-re-flying-blind-on-claude-code-spending-i-built-a-window/Anthropic just changed how fast your 5-hour session limits burn during peak hours. No warning. No opt-in. Just a tweet from Thariq and a wave of canceled subscriptions. One reply fromFri, 27 Mar 2026 00:00:00 GMTaihttps://bengreenberg.dev/blog/when-the-sirens-stop-the-data-starts/https://bengreenberg.dev/blog/when-the-sirens-stop-the-data-starts/There's a moment after a siren when everything is quiet, and you're standing in a shelter with your family, and you realize you have absolutely no control over what happens next. The Iron Dome willSun, 15 Mar 2026 00:00:00 GMTpostshttps://bengreenberg.dev/blog/ai-and-stylus-the-builders-new-toolkit/https://bengreenberg.dev/blog/ai-and-stylus-the-builders-new-toolkit/AI tools are changing how developers build Stylus contracts on Arbitrum, while Stylus enables new AI workloads onchain. Here's what builders should know.Wed, 25 Feb 2026 00:00:00 GMTpostsblockchainaihttps://bengreenberg.dev/blog/is-your-project-ready-for-arbitrum-open-house-a-founder-s-self-assessment/https://bengreenberg.dev/blog/is-your-project-ready-for-arbitrum-open-house-a-founder-s-self-assessment/You're thinking about applying to Arbitrum Open House. Maybe you've read about the evaluation criteria. Maybe you've seen all of our amazing community partners. But before you start filling out theWed, 18 Feb 2026 00:00:00 GMTblockchainhttps://bengreenberg.dev/blog/what-winning-arbitrum-open-house-teams-do-differently/https://bengreenberg.dev/blog/what-winning-arbitrum-open-house-teams-do-differently/Most hackathon judging is a black box. You submit, you wait, you get a number. Maybe feedback, maybe not. Open House does it differently, and if you're applying, knowing the framework gives you anTue, 17 Feb 2026 00:00:00 GMTblockchainhttps://bengreenberg.dev/blog/how-i-am-securing-an-openclaw-hosting-platform-where-customers-hand-over-their-api-keys/https://bengreenberg.dev/blog/how-i-am-securing-an-openclaw-hosting-platform-where-customers-hand-over-their-api-keys/You're building a hosting platform. Customers give you their Anthropic API key, their Telegram bot token, their Google OAuth credentials. They trust you to run an AI assistant on a VPS they'll neverSun, 15 Feb 2026 00:00:00 GMTpostshttps://bengreenberg.dev/blog/the-torah-figured-out-ai-agent-liability-2-000-years-ago/https://bengreenberg.dev/blog/the-torah-figured-out-ai-agent-liability-2-000-years-ago/An AI agent had its code rejected from a very popular open source repository this week. So it researched the maintainer's personal history, psychoanalyzed him as insecure and territorial, andFri, 13 Feb 2026 00:00:00 GMTaihttps://bengreenberg.dev/blog/i-built-a-claude-skill-that-scaffolds-arbitrum-dapps-here-s-how-it-works/https://bengreenberg.dev/blog/i-built-a-claude-skill-that-scaffolds-arbitrum-dapps-here-s-how-it-works/Most AI coding tutorials stop at "hello world." A counter app, a to-do list, maybe a smart contract that compiles but never connects to anything. The gap between that and a working dApp with a localThu, 05 Feb 2026 00:00:00 GMTaiblockchainhttps://bengreenberg.dev/blog/i-built-a-chrome-extension-that-scores-my-x-posts-before-i-hit-publish/https://bengreenberg.dev/blog/i-built-a-chrome-extension-that-scores-my-x-posts-before-i-hit-publish/X gives you analytics after the fact. By then it's too late. Your post either worked or it didn't, and you're guessing why. I got tired of the guessing game. So I built something that tells me how aFri, 23 Jan 2026 00:00:00 GMTpostshttps://bengreenberg.dev/blog/the-developer-who-doesn-t-code-what-actually-matters-in-2026/https://bengreenberg.dev/blog/the-developer-who-doesn-t-code-what-actually-matters-in-2026/Is learning to code dead in 2026? I started as a bootcamp grad in 2017. Months of Ruby and JavaScript, portfolio projects, and a lot of hope. That path worked. I got hired, learned on the job, andTue, 20 Jan 2026 00:00:00 GMTcareerhttps://bengreenberg.dev/blog/why-you-can-t-handle-disagreement-anymore/https://bengreenberg.dev/blog/why-you-can-t-handle-disagreement-anymore/If you've noticed that every argument feels personal now, you're not imagining it. Something has changed. Not just in politics or online discourse, but in how disagreement itself lands in your nervousMon, 19 Jan 2026 00:00:00 GMTpostshttps://bengreenberg.dev/blog/the-hiring-mistake-that-costs-you-your-best-candidates/https://bengreenberg.dev/blog/the-hiring-mistake-that-costs-you-your-best-candidates/You're probably passing on your strongest applicants without realizing it. I've reviewed hundreds of tech resumes. The ones that get filtered out first are career switchers. Former teachers,Sat, 17 Jan 2026 00:00:00 GMTcareerhttps://bengreenberg.dev/blog/vibe-code-your-first-app-on-arbitrum-this-weekend/https://bengreenberg.dev/blog/vibe-code-your-first-app-on-arbitrum-this-weekend/You've seen the tweets. "I built this app in 20 minutes with Claude." Screenshots of working products, built by people who swear they've never written a line of code. As an old-school developer whoFri, 09 Jan 2026 00:00:00 GMTaiblockchainhttps://bengreenberg.dev/blog/x402-v2-what-changed-and-why-it-matters-for-arbitrum-builders/https://bengreenberg.dev/blog/x402-v2-what-changed-and-why-it-matters-for-arbitrum-builders/tl;dr A full working x402 v2 implementation is available on GitHub, including a private inference demo and a reference facilitator. Clone them, run them, and use them as a base for your own ideas.Tue, 06 Jan 2026 00:00:00 GMTblockchainhttps://bengreenberg.dev/blog/docker-does-what-run-ai-models-locally-with-docker/https://bengreenberg.dev/blog/docker-does-what-run-ai-models-locally-with-docker/Docker Model Runner is a new feature that allows you to run, manage, and interact with AI models directly on your local machine. Forget about cloud setup hassles, expensive infrastructure, and latency. Now you can incorporate generative AI capabilities into your development workflow right from your machine.Sun, 30 Mar 2025 00:00:00 GMTaidockerproductivityhttps://bengreenberg.dev/blog/whats-new-in-developer-trends/https://bengreenberg.dev/blog/whats-new-in-developer-trends/Discover top developer trends from the 2024 Stack Overflow survey, including insights on Ruby, databases and web developmentFri, 26 Jul 2024 00:00:00 GMTcareerhttps://bengreenberg.dev/blog/rails-caching-with-couchbase-in-under-5-minutes/https://bengreenberg.dev/blog/rails-caching-with-couchbase-in-under-5-minutes/Reduce your data sprawl and learn how to implement caching in a Rails application using Couchbase in under 5 minutes.Mon, 24 Jun 2024 00:00:00 GMTtutorialhttps://bengreenberg.dev/blog/twilio-challenge-smartycall-ai-powered-competitive-trivia/https://bengreenberg.dev/blog/twilio-challenge-smartycall-ai-powered-competitive-trivia/Play competitive trivia with friends using Twilio's Voice and SMS APIs, OpenAI's language model, and Couchbase for data storage.Tue, 18 Jun 2024 00:00:00 GMTshowcaseopenaitwiliocouchbasenodejsexpressjshttps://bengreenberg.dev/blog/add-vector-search-to-your-astro-blog/https://bengreenberg.dev/blog/add-vector-search-to-your-astro-blog/Learn how to transform user queries into vectors and search for similar content in your Astro blog. Turn user uncertainty into certainty with vector search.Fri, 24 May 2024 00:00:00 GMTtutorialhttps://bengreenberg.dev/blog/launching-your-astro-powered-blog-on-a-journey-to-couchbase/https://bengreenberg.dev/blog/launching-your-astro-powered-blog-on-a-journey-to-couchbase/Learn how to transform your Astro site by integrating Couchbase for a more dynamic and high-performing blog. Discover the step-by-step process and the benefits of leveraging a NoSQL database for your content.Sun, 19 May 2024 00:00:00 GMTtutorialhttps://bengreenberg.dev/blog/decoding-polkadot/https://bengreenberg.dev/blog/decoding-polkadot/Breaking down the core concepts of Polkadot for developersTue, 30 May 2023 00:00:00 GMTblockchainhttps://bengreenberg.dev/blog/unlocking-github-codespaces-for-workshops/https://bengreenberg.dev/blog/unlocking-github-codespaces-for-workshops/Teaching code to people of all skill levels has never been easier thanks to CodespacesMon, 22 May 2023 00:00:00 GMTgithubblockchainhttps://bengreenberg.dev/blog/the-importance-of-blockchain-knowledge-for-devs/https://bengreenberg.dev/blog/the-importance-of-blockchain-knowledge-for-devs/Unlocking the Power of Blockchain: A Look into Polkadot's Potential for DevelopersTue, 16 May 2023 00:00:00 GMTblockchainhttps://bengreenberg.dev/blog/get-verified-on-bluesky-social-with-your-godaddy-domain/https://bengreenberg.dev/blog/get-verified-on-bluesky-social-with-your-godaddy-domain/A step-by-step guide to verifying your GoDaddy domain with Bluesky SocialWed, 26 Apr 2023 00:00:00 GMTtutorialhttps://bengreenberg.dev/blog/chatgpt-for-gmail-the-chrome-extension-to-fine-tune-your-emails/https://bengreenberg.dev/blog/chatgpt-for-gmail-the-chrome-extension-to-fine-tune-your-emails/Transform Your Gmail Drafts with Style: An Open Source Chrome Extension Powered by ChatGPTThu, 13 Apr 2023 00:00:00 GMTaihttps://bengreenberg.dev/blog/use-github-actions-to-make-your-github-profile-dynamic/https://bengreenberg.dev/blog/use-github-actions-to-make-your-github-profile-dynamic/Automatically Update Your Profile with Fresh Content and Showcase Your Latest WorkSun, 09 Apr 2023 00:00:00 GMTgithubcareerhttps://bengreenberg.dev/blog/a-chatgpt-github-action-for-reviewing-text-for-potentially-discriminatory-language/https://bengreenberg.dev/blog/a-chatgpt-github-action-for-reviewing-text-for-potentially-discriminatory-language/Discover the ChatGPT GitHub Action Language Check, an AI-powered tool that helps you eliminate discriminatory language in your writing and foster a more inclusive world.Tue, 04 Apr 2023 00:00:00 GMTgithubaihttps://bengreenberg.dev/blog/stackexchange-tutorial-themes-using-chatgpt-to-discover-relevant-topics/https://bengreenberg.dev/blog/stackexchange-tutorial-themes-using-chatgpt-to-discover-relevant-topics/A personal exploration into using AI to analyze community questions and generate valuable learning resources for developer relationsFri, 31 Mar 2023 00:00:00 GMTtutorialaihttps://bengreenberg.dev/blog/accelerating-substrate-blockchain-testing-with-github-codespaces/https://bengreenberg.dev/blog/accelerating-substrate-blockchain-testing-with-github-codespaces/Accelerate your Substrate blockchain development with GitHub Codespaces, a cloud-based development environment that lets you create and test your code in the cloudWed, 15 Mar 2023 00:00:00 GMTblockchainrusthttps://bengreenberg.dev/blog/from-high-level-to-systems-programming-a-practical-guide-to-rust-part-2/https://bengreenberg.dev/blog/from-high-level-to-systems-programming-a-practical-guide-to-rust-part-2/In this series, we will be looking at Rust, a language that has been ranked as the most loved language seven years in a row by the Stack Overflow annual survey.Mon, 02 Jan 2023 00:00:00 GMTrusthttps://bengreenberg.dev/blog/from-high-level-to-systems-programming-a-practical-guide-to-rust-part-1/https://bengreenberg.dev/blog/from-high-level-to-systems-programming-a-practical-guide-to-rust-part-1/In this series, we will be looking at Rust, a language that has been ranked as the most loved language seven years in a row by the Stack Overflow annual survey.Fri, 30 Dec 2022 00:00:00 GMTrusthttps://bengreenberg.dev/blog/measuring-devrel-success-thinking-outside-the-funnel/https://bengreenberg.dev/blog/measuring-devrel-success-thinking-outside-the-funnel/Companies whose primary audience is developers will usually seek to build a developer relations team early on because they have heard they need one to be successful. Yet, they often go into the endeavor without a clear understanding of what that team is meant to do besides "going to events" and "speaking to developers".Thu, 11 Aug 2022 00:00:00 GMTdevrelhttps://bengreenberg.dev/blog/build-your-own-synthetic-user-testing/https://bengreenberg.dev/blog/build-your-own-synthetic-user-testing/A resilient testing suite for your application includes unit tests, integration tests, acceptance tests, and more. All those tests go a long way in ensuring the reliability of your application and providing confidence when you deploy code changes. But there’s another kind of testing that’s important to add to your suite if you haven’t already - simulating the behavior of your users.Tue, 05 Jul 2022 00:00:00 GMTmonitoringhttps://bengreenberg.dev/blog/navigating-nerdgraph-with-the-new-relic-postman-api-collection/https://bengreenberg.dev/blog/navigating-nerdgraph-with-the-new-relic-postman-api-collection/Today we’re going to explore how to use Postman to navigate the New Relic GraphQL API, NerdGraph, and use it to explore your telemetry data, update your account, and a lot more. Postman provides a lot of support for building with APIs and with the recently released New Relic public API collection, you can leverage that support to supercharge your usage of our GraphQL API.Wed, 22 Jun 2022 00:00:00 GMTtutorialmonitoringhttps://bengreenberg.dev/blog/debugging-phoenix-web-applications-with-new-relic-and-codestream/https://bengreenberg.dev/blog/debugging-phoenix-web-applications-with-new-relic-and-codestream/While Elixir and Phoenix are blazing fast, you still have to watch out for performance issues in your production applications. You can use New Relic One to identify issues in your Phoenix application’s performance.Wed, 23 Feb 2022 00:00:00 GMTelixirmonitoringhttps://bengreenberg.dev/blog/my-mac-dev-tools/https://bengreenberg.dev/blog/my-mac-dev-tools/You have a new Mac and you are so excited to get going on creating awesome applications on it. First, though, you need to install some dev tools. What do you put on your brand new machine?Tue, 22 Feb 2022 00:00:00 GMTproductivityhttps://bengreenberg.dev/blog/lessons-learned-from-maintaining-a-fork/https://bengreenberg.dev/blog/lessons-learned-from-maintaining-a-fork/Committing to maintain a fork of an active project has distinct challenges I have learned. In brief, they center on two themes...Mon, 14 Feb 2022 00:00:00 GMTgithubhttps://bengreenberg.dev/blog/monitor-rails-7-applications-with-new-relic-one/https://bengreenberg.dev/blog/monitor-rails-7-applications-with-new-relic-one/As you build increasingly complex applications with the latest release of Rails, it’s important to monitor your application stack for performance and quickly troubleshoot any issues before they're on fire. You can use New Relic One to monitor your application’s performance and diagnose issues.Fri, 21 Jan 2022 00:00:00 GMTrubymonitoringhttps://bengreenberg.dev/blog/are-you-a-second-career-dev-your-pivot-skills-are-your-superpowers/https://bengreenberg.dev/blog/are-you-a-second-career-dev-your-pivot-skills-are-your-superpowers/I am here to tell you that as a second career developer you have something that can be an incredible boost to your work. Counter-intuitively, this boost is often seen as a detraction.Wed, 05 Jan 2022 00:00:00 GMTcareerhttps://bengreenberg.dev/blog/thriving-as-a-remote-first-team/https://bengreenberg.dev/blog/thriving-as-a-remote-first-team/Over the years I have observed several habits of remote-first teams that enable productivity, happiness and success. What I describe here is what has worked for me, and what I have seen work best in the places I've been.Wed, 13 Oct 2021 00:00:00 GMTcareer