🛠️ All DevTools

[Other] Constraint Decay: The Fragility of LLM Agents in Back End Code Generation

[Other] AI agent toolkit: coding agent CLI, unified LLM API, TUI & web UI libraries, Slack bot, vLLM pods

[Other] Microsoft open-sources "the earliest DOS source code discovered to date" <a href="https:&#x2F;&#x2F;opensource.microsoft.com&#x2F;blog&#x2F;2026&#x2F;04&#x2F;28&#x2F;continuing-the-story-of-early-dos-development&#x2F;" rel="nofollow">https:&#x2F;&#x2F;opensource.microsoft.com&#x2F;blog&#x2F;2026&#x2F;04&#x2F;28&#x2F;continuing-...</a>

[API/SDK] API proposed by Chrome: Declarative partial updates

[Other] Reverse engineering circuitry in a Spacelab computer from 1980

[Other] z386: An Open-Source 80386 Built Around Original Microcode

[Other] 80386 Microcode Disassembled

[Other] 754 structured cybersecurity skills for AI agents · Mapped to 5 frameworks: MITRE ATT&CK, NIST CSF 2.0, MITRE ATLAS, D3FEND & NIST AI RMF · agentskills.io standard · Works with Claude Code, GitHub Copilot, Codex CLI, Cursor, Gemini CLI & 20+ platforms · 26 security domains · Apache 2.0

[Other] Electrobun 2.0 will be decoupled from Bun due to the Rust rewrite <a href="https:&#x2F;&#x2F;xcancel.com&#x2F;YoavCodes&#x2F;status&#x2F;2058064720553222567" rel="nofollow">https:&#x2F;&#x2F;xcancel.com&#x2F;YoavCodes&#x2F;status&#x2F;2058064720553222567</a>

[Other] Making deep learning go brrrr from first principles (2022)

[Database] Models.dev: open-source database of AI model specs, pricing, and capabilities

[DevOps] Show HN: OpenRig – a control plane for multi-agent coding topologies Hi HN, I’m Mike, the founder of OpenRig.<p>I built this because my Claude Code + Codex setup kept forming little &quot;topologies&quot; of long-lived agents that worked well together, but the terminal sprawl was intense. So I built a primitive the agents could intuitively reach for to save and recreate these setups on the fly. This then led to more agent-first primitives like coordination, declarative workflow patterns, workspaces, etc.<p>Several months in and these &quot;rigs&quot; I manage with openrig require a lot less babysitting and I can manage more projects at once without getting overwhelmed.<p>The short version: OpenRig is a way to save and operate that topology instead of rebuilding it by hand every time.<p>Demo video: <a href="https:&#x2F;&#x2F;youtu.be&#x2F;yCFSRnPDFqY?si=n5e627d0CU3X3bmE" rel="nofollow">https:&#x2F;&#x2F;youtu.be&#x2F;yCFSRnPDFqY?si=n5e627d0CU3X3bmE</a><p>GitHub: <a href="https:&#x2F;&#x2F;github.com&#x2F;mvschwarz&#x2F;openrig" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;mvschwarz&#x2F;openrig</a>

[Other] GitHub introduces staged publishing and new install-time controls for NPM

[Other] Microsoft starts canceling Claude Code licenses <a href="https:&#x2F;&#x2F;archive.ph&#x2F;WfCta" rel="nofollow">https:&#x2F;&#x2F;archive.ph&#x2F;WfCta</a>

[Other] TorQ: Kdb+ Production Framework

[Build/Deploy] Show HN: Darnix – Darwin Built with Nix The Darwin kernel (XNU) has been open source since 1999. But &quot;open source&quot; and &quot;you can actually build and boot it&quot; are very different things. XNU depends on proprietary tooling, kexts, and a bunch of open source projects published without a build system.<p>Darnix builds the whole thing with Nix. The kernel, the filesystem, the boot image, all the way to a running QEMU instance. We patched XNU to run on QEMU without kexts, ported HFS+ from a kernel extension into the kernel itself, fixed GRUB&#x27;s Mach-O loader, and wired it all together as a flake. The build is fully sandboxed. No root, no volume mounting, no device access, no network.<p>The bigger idea is a revival of PureDarwin (<a href="https:&#x2F;&#x2F;www.puredarwin.org&#x2F;" rel="nofollow">https:&#x2F;&#x2F;www.puredarwin.org&#x2F;</a>), a standalone OS on Apple&#x27;s open source Darwin layer, with Nix managing everything above the kernel. Sort of like a Nix OS on XNU instead of Linux.<p>Right now the kernel boots, mounts a ramdisk, and runs a single static binary. Next step is a shell.<p><a href="https:&#x2F;&#x2F;github.com&#x2F;jonhermansen&#x2F;darnix" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;jonhermansen&#x2F;darnix</a><p>Technical details and the full list of patches are in the README. I would love to hear from anyone who’s thought about this space!<p>---<p>Darnix is not affiliated with or endorsed by Apple Inc. This is not macOS. Apple, macOS, and related trademarks are the property of Apple Inc. Darwin is licensed under the APSL.

[Other] Show HN: Pablo – a Chrome extension that copies UI from any website Pablo is a Chrome extension that copies the HTML and CSS behind any element you hover.<p>It captures computed styles, fonts (with @font-face and Google Fonts links), CSS keyframes, and animation props from GSAP and Framer Motion. The output is structured so it pastes cleanly into Claude Code, Cursor, or Codex when you want to rebuild a component in your own stack.<p>Manifest v3, no host permissions, no backend. Free.<p><a href="https:&#x2F;&#x2F;usepablo.dev" rel="nofollow">https:&#x2F;&#x2F;usepablo.dev</a><p>Happy to answer questions about how the extraction works, and would love to hear about sites where the output breaks.

[Other] FinceptTerminal is a modern finance application offering advanced market analytics, investment research, and economic data tools, designed for interactive exploration and data-driven decision-making in a user-friendly environment.

[Other] Show HN: ShadowCat – file transfer through QR Codes in a Browser

[API/SDK] Show HN: I made an open-source memory layer for agents Store memories, auto-extract entities and relationships, search semantically. MCP server + REST API + SDKs. Self-hostable, cloud option, MIT license.