🛠️ All DevTools

[DevOps] Show HN: Solving the cluster 1 problem with vCluster standalone vcluster is an open source tool for Kubernetes multi tenancy and over the years it has matured to have hosted controlplane virtual cluster, shared virtual clusters but the host cluster problem was always there. With vcluster standalone, you can now create the first cluster also with the same developer experience and consolidate the multiple vendor problem. With this, you can now use vcluster for entire multi tenancy spectrum. Feel free to discuss, happy to answer any questuons.

[Other] Show HN: Recall: Give Claude perfect memory with Redis-backed persistent context Hey HN! I&#x27;m José, and I built Recall to solve a problem that was driving me crazy.<p>The Problem: I use Claude for coding daily, but every conversation starts from scratch. I&#x27;d explain my architecture, coding standards, past decisions... then hit the context limit and lose everything. Next session? Start over.<p>The Solution: Recall is an MCP (Model Context Protocol) server that gives Claude persistent memory using Redis + semantic search. Think of it as long-term memory that survives context limits and session restarts.<p>How it works: - Claude stores important context as &quot;memories&quot; during conversations - Memories are embedded (OpenAI) and stored in Redis with metadata - Semantic search retrieves relevant memories automatically - Works across sessions, projects, even machines (if you use cloud Redis)<p>Key Features: - Global memories: Share context across all projects - Relationships: Link related memories into knowledge graphs - Versioning: Track how memories evolve over time - Templates: Reusable patterns for common workflows - Workspace isolation: Project A memories don&#x27;t pollute Project B<p>Tech Stack: - TypeScript + MCP SDK - Redis for storage - OpenAI embeddings (text-embedding-3-small) - ~189KB bundle, runs locally<p>Current Stats: - 27 tools exposed to Claude - 10 context types (directives, decisions, patterns, etc.) - Sub-second semantic search on 10k+ memories - Works with Claude Desktop, Claude Code, any MCP client<p>Example Use Case: I&#x27;m building an e-commerce platform. I told Claude once: &quot;We use Tailwind, prefer composition API, API rate limit is 1000&#x2F;min.&quot; Now every conversation, Claude remembers and applies these preferences automatically.<p>What&#x27;s Next (v1.6.0 in progress): - CI&#x2F;CD pipeline with GitHub Actions - Docker support for easy deployment - Proper test suite with Vitest - Better error messages and logging<p>Try it:<p>npm install -g @joseairosa&#x2F;recall # Add to claude_desktop_config.json # Start using persistent memory

[Other] Testing a compiler-driven full-stack web framework

[Other] Show HN: Baby's first international landline Hi HN,<p>As a weekend project, I hacked together a physical phone, a Raspberry Pi running Asterisk and Twilio, to let toddlers safely make international calls.<p>I’ve documented the setup in this write-up and published the code + Ansible playbooks on GitHub so others can replicate it.<p>I built this so kids of expats can easily stay in touch with family on other continents.<p>Would love feedback from anyone who’s worked on something similar or tries building this themselves!<p>writeup: <a href="https:&#x2F;&#x2F;wip.tf&#x2F;posts&#x2F;telefonefix-building-babys-first-international-landline&#x2F;" rel="nofollow">https:&#x2F;&#x2F;wip.tf&#x2F;posts&#x2F;telefonefix-building-babys-first-intern...</a> github repos: - <a href="https:&#x2F;&#x2F;github.com&#x2F;nbr23&#x2F;ansible-role-telefonefix" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;nbr23&#x2F;ansible-role-telefonefix</a> - <a href="https:&#x2F;&#x2F;github.com&#x2F;nbr23&#x2F;allo-wed" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;nbr23&#x2F;allo-wed</a>

[Other] Scaling request logging with ClickHouse, Kafka, and Vector

[Other] Show HN: Oh Yah – Routine management app I built for my sons Hi HN! I built Oh Yah! to help my sons (age 7 and 10) stick to daily routines without constant reminders. The core idea: minimal distractions during tasks by locking navigation when a timer is running, plus optional photo-based task completion for accountability<p>Built with React Native&#x2F;Expo and Firebase. The trickiest part was designing the UX to be simple enough for kids with minimal distractions while giving parents enough control – ended up with a task-definition system that lets parents create weekly schedules with daily toggles instead of duplicating tasks across days<p>It&#x27;s on the App Store now after a few months of dogfooding with my family. There&#x27;s a 1-month free trial, then it&#x27;s subscription-based. Would love feedback from other parents dealing with similar challenges

[Database] Database Linting and Analysis for PostgreSQL

[IDE/Editor] Build production-grade AI agents using natural language Promptius is an AI-powered development environment designed to build and deploy autonomous agents based on user prompts.

[API/SDK] Take control of your API traffic with custom rate limits. Enterprise-grade rate limiting service built on Cloudflare. Define rate limits by user ID, API key, or any custom parameter. Drop-in integration with ~25ms latency.

[Other] From idea to deployment—all on your enterprise data Build production-ready apps from natural language using your real data, in your cloud, with enterprise security and governance built in. Start building with AI that knows your stack.

[Other] Business & IT Technology WordPress Theme Techto is a modern, responsive WordPress theme for IT companies, startups, and agencies. With 24 demos, template library, and flexible inner pages, it combines sleek design with powerful functionality for your online presence.

[Testing] Stop breaking prod, build & test with a fleet of QA agents Get a fleet of QA agents that protect your product’s quality. Let AI explore your app for full test coverage, monitor staging to catch issues, and deliver debugging context as soon as you open your PRs. Build at full speed and never break prod again.

[Other] Remove checkered backgrounds instantly - 100% client-side Ever remove those annoying checkered patterns from screenshots and AI images ? "Remove BG" is a free, privacy-first web tool that instantly removes checkered patterns and solid backgrounds from your images - entirely in your browser. Built with Claude Code

[Other] The boilerplate with all you need to build your iOS Apps. AppForgeAI saves weeks of setup work, letting you ship MVPs and full-scale apps in record time. Whether you’re launching your next startup or your 10th indie app, you’ll start with production-ready code from day one.

[Other] Track your OpenAI Codex sessions live from your Mac menu bar SessionWatcher for Codex keeps your OpenAI Codex sessions visible at a glance. See live token counts, time remaining, and usage stats directly from your macOS menu bar. So you never get cut off mid-flow again.

[Other] easily manage apple refund requests, track status This service is built on Laravel / Filament multi-tenant architecture, effectively helping developers prevent fraudulent refunds by instantly processing Apple's CONSUMPTION_REQUEST notifications and asynchronously returning consumption data.

[Other] Vultisig launches with a new facelift. Revolutionary seedless crypto wallet powered by TSS (Threshold Signature Scheme) technology. Vultisig eliminates seed phrase vulnerabilities while delivering enterprise-grade multi-sig security for than 30 chains like Bitcoin, Ethereum, Solana, and more.

[Other] Create Pixel Art and Sprite Sheets Instantly for Your Games Generate stunning sprites and pixel art instantly with this powerful tool for pixel art creation and sprite sheets. Perfect for game developers and artists seeking ready to use assets, it delivers high quality visuals tailored for games and creative projects

[Other] Show HN: Agentic Design Patterns – Python Edition, from the Codex Codebase While reading Agentic Design Patterns by Antonio Gulli, I wanted to see how these patterns look in real code. I cloned the OpenAI Codex repo (the open-source AI coding assistant that recently trended on HN) — but it was in Rust.<p>So, I used an Cursor to help me extract and translate 18+ agentic patterns from Codex’s codebase into Python. That small experiment turned into a full open-source guide: GitHub: Codex Agentic Patterns <a href="https:&#x2F;&#x2F;github.com&#x2F;artvandelay&#x2F;codex-agentic-patterns" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;artvandelay&#x2F;codex-agentic-patterns</a><p>Each pattern comes with:<p>A short explanation and code sample<p>A runnable exercise and agent snippet<p>A summary of how Codex used the pattern (e.g., prompt chaining, tool orchestration, reflection loops, sandbox escalation)<p>One full working Python agent that ties it all together<p>If you’ve read the agentic design patterns book or explored Codex, this is a bridge between theory and practice — focused on runnable, open examples instead of abstract diagrams.<p>It’s completely free and open-source. Would love feedback, ideas, or even new patterns from your own agent experiments.

[Other] Building a JavaScript Runtime from Scratch using C