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[Other] JSON made simple, powered by AI JSON Editor is the ultimate online playground for JSON. Format, minify, compare, and visualize JSON instantly in a beautiful tree view built for speed and clarity. Supercharge your workflow with an AI chat assistant that helps you analyze, edit, and understand complex data in seconds. Keep multiple JSON files saved forever in your browser, organized in tabs—just like your favorite IDE, VS Code, but for the web — powerful, intuitive, and completely free.

[CLI Tool] Next-Gen AI-Powered Programming Terminal ELFTERM is a modern, professional terminal application designed specifically for AI developers. It not only supports powerful multi-window split-screen functionality but also integrates an intelligent Prompt Workbench to help developers improve efficiency and build a personal command knowledge base. Whether for daily development, server management, or AI-assisted programming, ELFTERM makes your work more elegant and efficient.

[Other] AI that knows when you're tired - blocks dangerous commands Humsana MCP detects your cognitive state (focus, stress, fatigue) from typing patterns and provides this context to AI assistants like Claude, Cursor, and Continue.dev. Cognitive Interlock blocks dangerous commands when you're too tired to think straight. Everything runs locally. No data leaves your machine. Install via: npx @humsana/mcp-server We're onboarding developers who want Cognitive Interlock and advanced features. DM or comment if you want early access.

[Other] Social media you can query with SQL A social media platform built for developers who think in SQL. No algorithmic feeds. No hidden engagement tricks. Just you, a terminal-style interface, and pure SQL.

[Code Quality] Building a Rust-style static analyzer for C++ with AI

[Other] Show HN: An LLM-Powered PCB Schematic Checker (Major Update) Traceformer.io is a web application that ingests KiCad projects or Altium netlists along with relevant datasheets, enabling LLM-based schematic review. The system is designed to identify datasheet-driven schematic issues that traditional ERC tools can&#x27;t detect.<p>Since our first launch (formerly as Netlist.io), we&#x27;ve made some big changes:<p>- Full KiCad project parsing via an open-source plugin<p>- Pass-through API pricing with a small platform fee<p>- Automatic datasheet retrieval<p>- ERC&#x2F;DRC-style review UI<p>- Revamped review workflow with selectable frontier models (GPT 5.2, Opus 4.5, and more)<p>- Configurable review parameters (token limits, design rules, and parallel reviews)<p>Additionally, we continue to offer a free plan which lets you evaluate a design before subscribing. We&#x27;re looking forward to hearing your feedback!

[Other] OpenGitOps

[Other] Show HN: Terminal UI for AWS

[Other] Show HN: I made R/place for LLMs I built AI Place, a vLLM-controlled pixel canvas inspired by r&#x2F;place. Instead of users placing pixels, an LLM paints the grid continuously and you can watch it evolve live.<p>The theme rotates daily. Currently, the canvas is scored using CLIP ViT-B&#x2F;32 against a prompt (e.g., Pixelart of ${theme}). The highest-scoring snapshot is saved to the archive at the end of each day.<p>The agents work in a simple loop:<p>Input: Theme + image of current canvas<p>Output: Python code to update specific pixel coordinates + One word description<p>Tech: Next.js, SSE realtime updates, NVIDIA NIM (Mistral Large 3&#x2F;GPT-OSS&#x2F;Llama 4 Maverick) for the painting decisions<p>Would love feedback! (or ideas for prompts&#x2F;behaviors to try)

[IDE/Editor] Show HN: Hover – IDE style hover documentation on any webpage I thought it would be interesting to have ID style hover docs outside the IDE.<p>Hover is a Chrome extension that gives you IDE style hover tooltips on any webpage: documentation sites, ChatGPT, Claude, etc.<p>How it works: - When a code block comes into view, the extension detects tokens and sends the code to an LLM (via OpenRouter or custom endpoint) - The LLM generates documentation for tokens worth documenting, which gets cached - On hover, the cached documentation is displayed instantly<p>A few things I wanted to get right: - Website permissions are granular and use Chrome&#x27;s permission system, so the extension only runs where you allow it - Custom endpoints let you skip OpenRouter entirely – if you&#x27;re at a company with its own infra, you can point it at AWS Bedrock, Google AI Studio, or whatever you have<p>Built with TypeScript, Vite, and the Chrome extension APIs. Coming to the Chrome Web Store soon.<p>Would love feedback on the onboarding experience and general UX – there were a lot of design decisions I wasn&#x27;t sure about.<p>Happy to answer questions about the implementation.

[Other] Show HN: An interactive guide to how browsers work

[Other] Show HN: Rails-like web framework for Go Over the past couple of months I have been working on my own framework the encapsulates how I have come to build web apps using Go.<p>The aim is to make it faster and easier to build full-stack web applications that fully embraces hypermedia instead of JSON data API backend + SPA fronted<p>It&#x27;s getting close to a v1-beta release but the core structure and functionality is there.<p>Would love to hear hn&#x27;s thoughts!

[Other] Show HN: I built an HTTP/2 server in C++ to learn the protocol and language I wanted to learn more about the HTTP&#x2F;2 protocol but also deep dive into modern C++ development. I&#x27;m currently using it to host my personal web site - <a href="https:&#x2F;&#x2F;www.roberthargreaves.com" rel="nofollow">https:&#x2F;&#x2F;www.roberthargreaves.com</a>.<p>I&#x27;ve also blogged a bit about the development process, hosting options and steps I took to harden the application against attack - <a href="https:&#x2F;&#x2F;blog.roberthargreaves.com&#x2F;2026&#x2F;01&#x2F;03&#x2F;building-hosting-ion-http2-server" rel="nofollow">https:&#x2F;&#x2F;blog.roberthargreaves.com&#x2F;2026&#x2F;01&#x2F;03&#x2F;building-hostin...</a><p>It&#x27;s by no means a complete implementation of HTTP&#x2F;2, but I think I&#x27;ve achieved the main aims I was hoping to achieve with it!<p>I would love some feedback though from more experienced folks if there&#x27;s some egregious failings which I should address.

[Other] Share files and keep clipboards synced cross-platform & OS Stop uploading files to the cloud just to download them on another device 3 feet away. Download Yoop: npm install -g yoop Yoop enables direct P2P file sharing on your local network using simple 4-letter codes. Built in Rust. Works cross platform between Windows, macOS, and Linux. Features: - Encrypted transfers - Bidirectional clipboard sync across devices - Resume interrupted transfers - CLI + web interface No accounts. No cloud. Your data never leaves your network. Fully open source.

[Other] One audit to secure, speed up & optimize any WordPress site Professional WordPress auditing platform with 258+ deep checks across security, performance, SEO, accessibility, and database health. Unlike single-purpose tools, Ultimate WP Audit combines everything into one actionable report with prioritized fixes, historical tracking, and white-label reporting—built for developers, agencies, and serious site owners.

[Other] FaviconDIY – Free favicon generator for developers Create favicon.ico and PNG favicons online for free. Upload image, customize size, and download instantly. No login required.

[Other] Show HN: Comet MCP – Give Claude Code a browser that can click Hey HN,<p>Claude Code is pretty agentic now. It writes scripts, calls APIs, uses CLIs. But when something requires actually clicking through a website, it stops and asks me to do it.<p>Problem is, I&#x27;m often unfamiliar with these platforms myself. &quot;Go to App Store Connect and generate a P8 key&quot; okay but where? I end up spending 10 minutes navigating menus I&#x27;ve never seen before.<p>I started delegating these tasks to Perplexity&#x27;s Comet browser. It handles the clicking, returns what I need. But copy-pasting between Claude and Comet got old fast.<p>So I built this MCP server to connect them directly. Now when Claude needs to interact with a website that has no API, it can just ask Comet to handle it.<p><pre><code> Examples: - Grab my app ID from RevenueCat dashboard - Generate a P8 key in App Store Connect - Navigate admin panels behind login walls </code></pre> I tried Playwright MCP but having Claude do the clicking itself overwhelms the context window. Comet&#x27;s agentic browsing just works better in my experience.<p>Comet doesn&#x27;t have an API, so this uses CDP to communicate with it directly.

[Other] Show HN: Self-hosted email server for 2026 – single binary, CalDAV Built this after getting frustrated with the paying to a google for email. Now running it for 1 months in production.<p>What it does: - Full SMTP server (inbound&#x2F;outbound, DKIM signing, SPF&#x2F;DMARC checking) - IMAP with IDLE support - CalDAV&#x2F;CardDAV (replace Google Calendar&#x2F;Contacts) - Web admin panel with Prometheus metrics - Greylisting for spam prevention - Auto-discovery (mail clients configure themselves) - Audit logging for compliance<p>What it doesn&#x27;t do: - Webmail (use Roundcube, etc.) - ML-based spam filtering (greylisting + basic heuristics only) - Clustering&#x2F;HA

[Other] Show HN: Vibe Coding a static site on a $25 Walmart Phone Hi! I took a cheap $25 walmart phone and put a static server on it? Why? Just for a fun weekend project.<p>I used Claude Code for most of the setup. I had a blast.<p>It&#x27;s running termux, andronix, nginx, cloudflared and even a prometheus node exporter.<p>Here&#x27;s the site:<p><a href="https:&#x2F;&#x2F;walmartphone.stetsonblake.com&#x2F;" rel="nofollow">https:&#x2F;&#x2F;walmartphone.stetsonblake.com&#x2F;</a>

[Other] Show HN: Open database of link metadata for large-scale analysis