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1314 summarised stories about Developer Tools, each linking back to the original source. Browse all topics →

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Wednesday, 19 August 2026

smolmachines / smolvm as a sandbox for untrusted Python & JavaScript

Simon Willison’s Weblog 1 month ago 37

smolmachines.com was tested for use as a secure sandbox for running untrusted Python and JavaScript. The initial Claude Code for web setup ran on Linux 6.18.5-fc-v20 with 4 vCPU and 15GB RAM but failed because /dev/kvm and CPU virt flags weren’t available, so smolvm couldn’t run. The work therefore switched to a GitHub Actions Ubuntu runner that does expose /dev/kvm and ran the test suite there instead.

Quoting Jeremy Morrell

Simon Willison’s Weblog 1 month ago 13

Jeremy Morrell argued that LLMs and modern sandbox primitives create an opportunity for Extensible Software on the web by reducing the cost and risk of building extensions. The quote was posted on 19th August 2026 at 10:56 pm. The approach shifts from building a closed app to shipping a core users can safely extend, with LLMs filling in missing pieces.

Your coding agent got the onboarding your developers never did

The New Stack 1 month ago 25

Steve Yegge argues in a two-part essay that agentic coding tools should receive “model welfare” attention while organizations fail to give similar support to developers. He says he is spending about $87,000 a month running his own agentic build system. Teams are responding by adding continuously maintained agent onboarding files (like AGENTS.md) and updating delivery practices such as smaller batch changes and faster, more reliable test feedback to improve agent throughput and reduce context-switch overload.

AI broke code review. What about knowledge sharing?

The New Stack 1 month ago 17 ● 3 sources

AI-generated code has overwhelmed code review, with engineers reviewing 500-line diffs they didn’t write at a pace that prevents careful reading. The loss of human collaboration creates “cognitive debt” unless teams change how knowledge is shared. Review should shift earlier by capturing intent as plans, constraints, and acceptance criteria before merging, so seniors evaluate the decisions behind the code rather than reading every line.

Shape

Product Hunt 1 month ago 46

“Shape” is a page that links to a discussion about an agentic IDE for designers and programmers. No date, price, or other concrete benchmark is provided in the available text. As a result, there’s not enough information here to confirm features, releases, or any real-world change beyond pointing to the discussion.

Exclusive: Replit taps OpenAI's low-cost Luna model for new 'Free Mode'

Fortune 50 ● 2 sources

Replit launched Free Mode, a feature powered by OpenAI's GPT-5.6 Luna model, available to paid subscribers ($20–$100/month) to reduce token consumption on routine tasks. OpenAI cut Luna's API costs by 80% on July 30, enabling the partnership. The feature automatically routes complex requests to more powerful models then reverts to Luna, lowering costs for developers while expanding access to coding tools.

OneCLI

Product Hunt 1 month ago 31

OneCLI proposes giving every employee a secured, sandboxed “pro assistant agent.” The description provides no specific number, date, or benchmark. As a result, it frames the main change as company-wide rollout of a sandboxed assistant setup rather than a detailed feature release or research finding.

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