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[Other] Code from MIT's 1986 SICP video lectures

[Other] Show HN: We packaged an MCP server inside Chromium Hey HN, we just shipped a browser with an inbuilt MCP server!<p>We&#x27;re a YC startup (S24) building BrowserOS — an open‑source Chromium fork. We&#x27;re a privacy‑first alternative to the new wave of AI browsers like Dia, Perplexity Comet. Since launching ~3 months ago, the #1 request has been to expose our browser as an MCP server.<p>-- Google beat us to launch with chrome-devtools-mcp (solid product btw), which lets you build&#x2F;debug web apps by connecting Chrome to coding assistants. But we wanted to take this a step further: we packaged the MCP server directly into our browser binary. That gives three advantages:<p>1. MCP server setup is super simple — no npx install, no starting Chrome with CDP flags, you just download the BrowserOS binary.<p>2. with our browser&#x27;s inbuilt MCP server, AI agents can interact using your logged‑in sessions (unlike chrome-devtools-mcp which starts a fresh headless instance each time)<p>3. our MCP server also exposes new APIs from Chromium&#x27;s C++ core to click, type, and draw bounding boxes on a webpage. Our APIs are also not CDP-based (Chrome Debug Protocol) and have robust anti-bot detection.<p>-- Few example use cases for BrowserOS-mcp are:<p>a) *Frontend development with Claude Code*: instead of screenshot‑pasting, claude-code gets WYSIWYG access. It can write code, take a screenshot, check console logs, and fix issues in one agentic sweep. Since it has your sessions, it can do QA stuff like &quot;test the auth flow with my Google Sign‑In.&quot; Here&#x27;s a video of claude-code using browserOS to improve the css styling with back-and-forth checking: <a href="https:&#x2F;&#x2F;youtu.be&#x2F;vcSxzIIkg_0" rel="nofollow">https:&#x2F;&#x2F;youtu.be&#x2F;vcSxzIIkg_0</a><p>b) *Use as an agentic browser:* You can install BrowserOS-mcp in claude-code or Claude Desktop and do things like form-filling, extraction, multi-step agentic tasks, etc. It honestly works better than Perplexity Comet! Here&#x27;s a video of claude-code opening top 5 hacker news posts and summarizing: <a href="https:&#x2F;&#x2F;youtu.be&#x2F;rPFx_Btajj0" rel="nofollow">https:&#x2F;&#x2F;youtu.be&#x2F;rPFx_Btajj0</a><p>-- *How we packaged MCP server inside Chromium binary*: We package the server as a Bun binary and expose MCP tools over HTTP instead of stdio (to support multiple sessions). And we have a BrowserOS controller installed as an extension at the application layer which the MCP server connects to over WebSocket to control the browser. Here&#x27;s a rough architecture diagram: <a href="https:&#x2F;&#x2F;dub.sh&#x2F;browseros-mcp-diag" rel="nofollow">https:&#x2F;&#x2F;dub.sh&#x2F;browseros-mcp-diag</a><p>-- *How to install and use it:* We put together a short guide here: <a href="https:&#x2F;&#x2F;git.new&#x2F;browseros-mcp" rel="nofollow">https:&#x2F;&#x2F;git.new&#x2F;browseros-mcp</a><p>Our vision is to reimagine the browser as an operating system for AI agents, and packaging an MCP server directly into it is a big unlock for that!<p>I&#x27;ll be hanging around all day, would love to get your feedback and answer any questions!

[Other] I built an F5 QKview scanner for CISA ED 26-01

[CLI Tool] An open-source, cross-platform terminal for seamless workflows

[API/SDK] The official Java SDK for Model Context Protocol servers and clients. Maintained in collaboration with Spring AI

[Other] Malicious traffic detection system

[Other] Show HN: OnlyJPG – Client-Side PNG/HEIC/AVIF/PDF/etc to JPG TL;DR: private, in-browser converter that turns pretty much any image file format into standard JPEGs. Everything runs locally. No uploads.<p>This started as a five-minute job and forty hours later...<p>I wanted to convert a HEIC without uploading it anywhere, so I wrestled Emscripten&#x2F;WebAssembly to run Google&#x27;s Jpegli inside a Web Worker. Now there&#x27;s a small UI and it handles a bunch of formats.<p>Just about the only thing it can&#x27;t decode is JXL - but there&#x27;s still some JPEG XL magic in there: XYB perceptual color quantization is enabled by default via Jpegli.<p>The upside of all this over-engineering is privacy and compatibility: images are processed entirely on your machine and never touch a server; the output is a regular JPEG that works everywhere.<p>I could have used a CLI, sure — but where&#x27;s the fun in that?<p>Would love feedback on edge cases and defaults.<p>Tested on Firefox, Chrome, and Safari.<p>Cheers!

[Other] Professional gltf file processing toolkit GLTFTools provides comprehensive GLTF file processing solutions, including format conversion, compression optimization, preview viewing, and more, making 3D asset processing simple and efficient.

[Other] First kanban that support vibe coding Your personal AI-powered task board inside VS Code, saved as JSON, fully offline, perfect for “vibe coding.”

[Other] The PHP web framework for complex applications CodefyPHP is a PHP web framework built for PHP architects who need a simple, yet robust toolkit for building complex applications.

[Other] Machine learning library Note is an efficient and flexible machine learning library that allows developers to easily build and train neural networks. It supports deep learning and reinforcement learning, enabling developers to easily perform distributed training.

[Database] Turn plain English into SQL queries + charts in 3 seconds Mertiql transforms natural language into optimized SQL queries, visualizations, and AI-powered insights. No SQL knowledge required. Works with PostgreSQL, MySQL, MongoDB, Snowflake, and BigQuery. Get answers in under 3 seconds.

[CLI Tool] Build and code directly in your terminal Stay in the flow. Build, code, and automate complex tasks without ever leaving your terminal. Qoder CLI seamlessly integrates with your existing workflow to supercharge it.

[Other] Lightweight survey widget for developers & saas founders The simplest survey widget for collecting customer feedback. Lightweight (6.8KB), embeddable, and developer-friendly. Add star ratings, NPS surveys, and user feedback to any website in minutes. No dependencies. Vanilla JavaScript.

[Other] Safe merging, on your terms. Code freezing for GitHub. Control when and how code gets merged to your GitHub repositories. Prevent unwanted merges during critical deployments, releases, and maintenance windows with enterprise-grade code freeze management.

[Other] Feature flags & percent rollouts for fast and safe releases. Developer-first feature flags for safe releases, gradual rollouts, and instant user targeting — built to help you ship fast with confidence.

[Other] Show HN: Code First CDC from Postgres to ClickHouse with MooseStack

[API/SDK] Cloudflare Sandbox SDK

[Other] Show HN: Kite – A modern, lightweight Kubernetes dashboard An early version was shown before, and now it works even better.<p>Enjoy！

[CLI Tool] Run interactive commands in Gemini CLI