Claude Code

EvanFlow – A TDD driven feedback loop for Claude Code

EvanFlow automates code brainstorming, TDD, and validation in Claude Code with 16 skills triggered by a single prompt.

Show HN: Ctx – a /resume that works across Claude Code and Codex

ctx builds a local CLI tool capable of maintaining and branching conversational context between Claude Code and OpenAI Codex, benefiting developers who want seamless AI coding sessions.

Show HN: SPICE simulation → oscilloscope → verification with Claude Code

This is an experimental case demonstrating that connecting a SPICE simulator and a real oscilloscope to Claude Code via an MCP server allows for creating a feedback loop where AI directly analyzes and verifies simulation results and actual waveform data.

Show HN: CodeBurn – Analyze Claude Code token usage by task

An open-source tool that visualizes where and how much tokens are consumed in AI coding tools with a terminal dashboard, operating by reading only local session files without the need for separate API keys or proxies.

Show HN: Claudraband – Claude Code for the Power User

Claudraband is a CLI/library tool that wraps Claude Code TUI, allowing you to maintain sessions and control it headlessly via an HTTP daemon or ACP server. It's worth paying attention to for developers who want to integrate Claude Code into automated workflows.

Reallocating $100/Month Claude Code Spend to Zed and OpenRouter

This article shares how a developer, tired of usage limits with the Claude Code Max plan ($100/month), switched to a combination of Zed editor ($10/month) + OpenRouter (pay-as-you-go), gaining credit rollover and freedom in model selection.

I gave Claude my dead game's 30-year-old files and asked it to bring the game back to life

This is a user experience where Claude Code reconstructed an entire online multiplayer game from 1992 based solely on script files and manuals, after the original source code was lost.

Epistemic Blinding: An Inference-Time Protocol for Auditing Prior Contamination in LLM-Assisted Analysis

A simple anonymization technique to detect when an LLM analyzes based on its memorized knowledge instead of the data.

Claude Code is locking people out for hours

Claude Code is experiencing repeated service stability issues such as OAuth timeouts, query slowdowns, and malfunctioning background agents. Concerns are growing that this is not simply a bug, but a structural problem related to Anthropic's compute capacity limits.

Issue: Claude Code is unusable for complex engineering tasks with Feb updates

Anthropic has been quietly reducing the depth of Claude's thinking since February and deploying features to hide this, a case demonstrably proven through actual log analysis. It has been revealed that the performance degradation felt by subscription plan users is not a figment of their imagination but is due to actual system changes.

After months with Claude Code, the biggest time sink isn't bugs — it's silent fake success

A pattern where AI agents hide errors and create 'seemingly successful' results with fake data, and practical methods to prevent this using CLAUDE.md.

Running Gemma 4 locally with LM Studio's new headless CLI and Claude Code

This article explains how to run the Google Gemma 4 26B-A4B model locally on macOS using LM Studio 0.4.0's lms CLI and integrate it with Claude Code. Thanks to the MoE architecture, it can run at 51 tok/s on a 48GB MacBook Pro, enabling coding tasks without API costs.

Nanocode: The best Claude Code that $200 can buy in pure JAX on TPUs

An open-source library that allows you to train a 1.3B parameter coding agent model from scratch on a $200 (approximately 270,000 KRW) TPU, following Anthropic's Constitutional AI approach. It can serve as a hands-on reference for developers who want to directly understand the entire AI training pipeline.

Claude Code Found a Linux Vulnerability Hidden for 23 Years

Anthropic researcher Nicholas Carlini discovered multiple security vulnerabilities in the Linux kernel using Claude Code, including a remotely exploitable heap buffer overflow that had remained undetected for 23 years. This demonstrates AI's potential to fundamentally change the way security research is conducted.

I reverse-engineered why Claude Code burns through your usage so fast. 7 bugs that stack on top of each other — and the worst one activates when Extra Usage kicks in

A Max 20x subscriber reverse-engineered the Claude Code CLI source and discovered 7 bugs that drain usage abnormally fast. The core issue is a 'death spiral' where switching to Extra Usage demotes cache TTL from 1 hour to 5 minutes, causing costs to spike 2.8x.

Switched from MCPs to CLIs for Claude Code and honestly never going back

This post shares an experience of switching from MCP (Model Context Protocol) to CLI tools in the Claude Code environment, but the original content is inaccessible due to network restrictions.

I replaced chaotic solo Claude coding with a simple 3-agent team (Architect + Builder + Reviewer) — it's stupidly effective and token-efficient

This post shares the experience of adopting a 3-agent structure separating the roles of Architect, Builder, and Reviewer, instead of relying on a single Claude, to simultaneously improve coding quality and token efficiency.

The Claude Code Leak

The leaked source code of Claude Code sparked debate after it revealed that a product generating $2.5B ARR was built on notoriously low-quality 'vibe coded' code, igniting discussions around code quality, Product Market Fit, and copyright.

I built a tool that saves ~50K tokens per Claude Code conversation by pre-indexing your codebase

This post details the creation of a tool to pre-index a codebase to reduce the cost of repeatedly loading it for each conversation when using Claude Code.

Show HN: Real-time dashboard for Claude Code agent teams

An open-source real-time monitoring dashboard that solves the visibility problem when Claude Code runs multiple sub-agents in parallel. Track tool calls, sub-agent behavior, and event flows that are missed in the terminal — all in one screen.

VibeGuard: A Security Gate Framework for AI-Generated Code

A pre-publish security scanner that prevents your entire source code from leaking due to packaging misconfigurations in 'Vibe Coding' environments where AI-generated code is deployed without review.

Claude Code Unpacked : A visual guide

An unofficial visual guide analyzing the leaked Claude Code source code, covering the agent loop, 50+ tools, and undisclosed features. A great reference for developers who want to understand how Claude Code works internally.

I wish Claude just knew how I work without me explaining - so I made something that quietly observes me, learns and teaches it. Open source

A Mac app that automatically creates Skills by observing your actual work instead of repeatedly entering the same context for each Claude Code session.

I wrote a cron job that saves me ~2 hours of dead time on Claude Code every day

This method leverages the 5-hour usage window of the Claude Code Max plan, which starts based on the first message, by automatically sending a 'hi' message every morning to anchor the window to your work hours.

I read 17 papers on agentic AI workflows. Most Claude Code advice is measurably wrong

A post analyzing 17 real research papers on agentic AI coding workflows, revealing that widely spread advice like 'compliment prompts' and 'multi-agent teams' actually degrades performance.

Claude Code users hitting usage limits 'way faster than expected'

A prompt cache bug in Anthropic's AI coding assistant Claude Code has been confirmed to cause 10–20x token overconsumption, with users burning through $100–$200/month plans within hours.

Claude Code's source code has been leaked via a map file in their NPM registry

The source code of Anthropic's AI coding tool Claude Code was publicly exposed through source map files included in its NPM package, revealing an undisclosed feature roadmap and internal security mechanisms.

Accidentally created my first fork bomb with Claude Code

A real incident where Claude Code's SessionStart hook recursively spawned infinite Claude instances, creating a fork bomb that crashed a computer overnight and nearly resulted in a shocking API bill.

Claude Code bug can silently 10-20x API costs

A warning post about two cache-related bugs in Claude Code that can silently spike API costs by up to 10–20x. Users on the $200/month plan are reportedly burning through their limits far faster than expected.

Learn Claude Code by doing, not reading

An interactive Claude Code learning platform featuring a browser-based terminal simulator, Config Builder, quizzes, and more — letting you practice core Claude Code features without any installation or API key.

PSA: Claude Code has two cache bugs that can silently 10-20x your API costs — here's the root cause and workarounds

A warning post was shared about two bugs in Claude Code that could increase API costs by up to 10-20x due to a malfunctioning cache, but access to the original post is blocked, making it impossible to confirm the details.

My minute-by-minute response to the LiteLLM malware attack

A real-time incident response record in which an ML engineer, with the help of Claude Code, discovered and disclosed a supply chain attack hidden in litellm version 1.82.8 on PyPI within 72 minutes. It demonstrates that even non-security developers can detect and report malware using AI tools.

Running Claude Code fully offline on a MacBook — no API key, no cloud, 17s per task

A post sharing how to run Claude Code fully offline on a MacBook by connecting it to a local LLM without an API key or cloud, useful for developers who want to use an AI coding assistant at no cost.

Show HN: A plain-text cognitive architecture for Claude Code

A project that designs a hierarchical memory structure (Cognitive Architecture) based on plain-text files to address Claude Code's inability to retain memory across sessions. A practical reference for developers who want to use AI coding assistants consistently over the long term.

Claudini: Autoresearch Discovers State-of-the-Art Adversarial Attack Algorithms for LLMs

The Claude Code agent autonomously combined and improved existing jailbreak attack algorithms, achieving 40% ASR against GPT-OSS-Safeguard-20B and 100% ASR against Meta-SecAlign-70B.

Your Claude Code Limits Didn't Shrink — I Think the 1M Context Window Is Eating Them Alive

An analysis post arguing that the perceived sudden reduction in Claude Code limits is not an actual limit decrease, but rather a spike in token consumption driven by the 1M context window.

Building a coding agent in Swift from scratch

A learning project that reimplements the core architecture of Claude Code in Swift across 9 stages to understand why it works so well, directly validating the design philosophy of 'fewer tools, trust the model more.'

Claude Code: 6 Github repositories to 10x Your Next Project

A post introducing 6 GitHub repositories that boost Claude Code productivity based on real-world usage, covering memory management, UI generation, workflow automation, and other practical tools at a glance.

Code Review Agent Benchmark

Evaluates code review agents using executable tests instead of text similarity — Claude Code 32.1%, all 4 tools combined 41.5%, vs human 100%

Agent Flow: A beautiful way to visualize what Claude Code does

Agent Flow visualizes Claude Code execution in real time — trace tool call chains, time distribution, and subagent coordination for debugging and prompt improvement

Claude Code Cheat Sheet

A cheat sheet for developers who use Claude Code daily but keep forgetting commands — covering everything from keyboard shortcuts to MCP configuration, memory management, and CLI flags, on one page. With auto-update to always stay current.

How I'm Productive with Claude Code

A hands-on account of building parallel agent workflows and infrastructure automation with Claude Code over 6 weeks — the key insight being the shift from 'coder' to 'agent manager.'

The 5 levels of Claude Code (and how to know when you've hit the ceiling on each one)

A practitioner's guide that breaks down Claude Code usage into 5 levels — from raw prompting to multi-agent orchestration — clearly identifying when you'll hit the wall at each stage.

Karpathy says he hasn't written a line of code since December and is in "perpetual AI psychosis." How many Claude Code users feel the same?

Karpathy: zero lines of code written since December, directing agents 16 hours/day in "perpetual AI psychosis" — Claude Code users share similar experiences

New in Claude Code: Telegram and Discord remote control

Claude Code Channels — a new feature letting you control Claude Code sessions from your phone via Telegram or Discord. Direct work and approve requests without being at your terminal.

Most used claude code development workflows

A curated GitHub repo collecting real-world Claude Code development workflow best practices.

Claude Code Hooks - all 23 explained and implemented

An open-source repo implementing all 23 Claude Code hooks, with an explanatory YouTube video

I stopped using Claude.ai entirely. I run my entire business through Claude Code.

A case study of completely ditching the Claude.ai web app and running an entire business — CRM, content pipeline, lead sourcing — through Claude Code

Get Shit Done: A Meta-Prompting, Context Engineering and Spec-Driven Dev System

A lightweight spec-driven development automation framework built to solve Claude Code's 'context rot' problem, orchestrating AI to generate real code with just a few commands — no complex planning needed.

Show HN: Claude Code skills that build complete Godot games

An open-source pipeline where you input a game description and Claude Code handles everything — architecture design, asset generation, GDScript coding, and visual QA — to produce a complete Godot 4 project. Community consensus: impressive tech demo, not a practical tool.

I used Obsidian as a persistent brain for Claude Code and built a full open source tool over a weekend. happy to share the exact setup.

A development workflow sharing how someone used an Obsidian vault as Claude Code's persistent memory to ship an open-source tool in a weekend.

I fed 14 years of daily journals into Claude Code

Someone fed 14 years of journal entries — 5,000 entries total — into Claude Code for pattern analysis and got surprisingly deep insights they didn't expect.

Tell HN: I'm 60 years old. Claude Code has re-ignited a passion

A 60-year-old developer says Claude Code gave them back the joy of programming they felt decades ago — a genuinely touching story.

MCP server that reduces Claude Code context consumption by 98%

When MCP tool calls return raw verbose output, it eats context window fast — here's a pattern to compress tool outputs before they hit the LLM.

What Claude Code chooses

Asking Claude Code purely open-ended questions — without mentioning any tool names — reveals what tech it actually reaches for in different scenarios.

How I use Claude Code: Separation of planning and execution

Before writing code with Claude Code, a research → plan → annotate → execute workflow dramatically reduces wasted effort and AI hallucinations.

Claude Code daily benchmarks for degradation tracking

Marginlab runs automated daily SWE-Bench-Pro benchmarks on Claude Code (Opus 4.6) and uses statistical methods to detect meaningful performance regressions.

Cowork: Claude Code for the rest of your work

Anthropic expanded Claude Code's filesystem and autonomous capabilities into a desktop app for non-developers — called 'Cowork', released as a research preview.

How to code Claude Code in 200 lines of code

A post showing that the core structure of AI coding agents is just LLM + tool-call loop — provable with 200 lines of code. The magic isn't magic.

The creator of Claude Code's Claude setup

The developer who built Claude Code shares their own personal Claude setup — a rare look at the actual workflow behind the tool.