60 Claude Certified Architect Exam Questions & Answers (CCAR-F)
Which exam are you preparing for? Architect Foundations (CCAR-F) Architect Professional (CCAR-P) Associate (CCAO-F) Developer (CCDV-F) All 60 origin…
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How to Rotate Claude API Keys with Secrets Manager and Lambda Without Getting Locked Out
Developers rush to rotate API keys for security, only to discover their AI‑powered apps suddenly start throwing 401 errors. The hidden culprit? A st…
Claude’s New Self‑Shutdown Feature Targets Abusive Chats
Photo by Brecht Corbeel on Unsplash A Chat Ends on Its Own Claude Opus 4 and its sibling 4.1 can now terminate a conversation without user input, a…
Claude Code's /compact cost $0.06 at 136k tokens with a warm cache, 9x that cold, and /clear sent zero requests
On Claude Code 2.1.289 with Opus 5.5, a /compact of a 136k-token session took 136,275 of its 138,344 input tokens from the prompt cache and cost $0.…
Anthropic’s Scion Shows Why AI Agents Are Forcing a Rethink of Source Control
Anthropic has redesigned its internal source-control infrastructure after AI-assisted development pushed its daily merge volume from roughly 2,500 c…
Stop Correcting Your Coding Agent Twice: How KeepPlain Turns Repeated Mistakes Into Rules
I've been working with coding agents every day for a long time now: mostly Claude Code, a lot of Codex, and sometimes Cursor and Pi. At some point,…
Claude Haiku 5.5 in Claude Code: Cut AI Coding Costs 20x
Anthropic released Claude Haiku 5.5 on October 7, 2026, and the headline number is hard to ignore: $0.10 per million input tokens, a tenth of Sonnet…
Как я поставил дешёвую модель-фильтр перед Claude и что показали первые две недели
Сохраняю в Telegram всё подряд, а Claude Sonnet раз в сутки пишет по каждому материалу разбор для блога. Почти половина сохранёнок для блога лишняя,…
Что общего у ЦОДов Яндекса, концерта Канье и Cloudflare: как проджекту работать с катастрофами
Новости о дата-центрах Яндекса заставили многих разбираться с отказоустойчивостью прямо во время аварии. При мне в Алматы случился блэкаут, после ко…
Google Ads in Claude, with an approve button
I built Camberstack , a hosted MCP server that connects Google Ads to Claude (and ChatGPT, Cursor, or any MCP client). This post is the setup and a…
Claude Code's hook matcher mcp__lab fired 0 times in 42 calls, though the same string worked as a permission rule
Across 14 headless runs of Claude Code 2.1.289, a hook whose matcher was the server prefix mcp__lab fired 0 times in 42 calls to that server's tools…
Claude Code Skills for Content: How I Make Khan Academy Style Videos for Free
I opened a LinkedIn post last week with "I think Claude Code skills are mostly useless." It got about 30,000 impressions and a lot of disagreement,…
How to Enable Claude Code Channels for Team and Enterprise Plans (Step by Step)
You connected Claude Code to a channel, maybe AgentRQ , a Telegram bot or a Discord bot, and sent it a message from your phone. Nothing happened. Cl…
Two agent CLIs, one repo: sharing context between Claude Code and Codex without stepping on each other
I run Claude Code and Codex against the same codebase every day on macOS. For the first month they kept overwriting each other's work, and I spent m…
Claude Code's keep-coding-instructions kept 1,044 tokens in the full prompt, 0 in the short one, and 18 of 18 fixes matched
On Claude Code 2.1.289 with Opus 5.5, keep-coding-instructions: true decided whether a 1,044-token # Doing tasks section stayed in the system prompt…
Why did my Claude Haiku calls start 400ing? Three AI API changes that break code quietly
I keep a weekly log of where the AI tooling landscape gives way: the release notes that quietly invalidate code people already shipped. Three from t…
One memory across AI agents: what it actually takes
The memory built into a coding agent lives inside that vendor's tools. What I tell one agent stays with that agent, and the next one I open in the s…
Anthropic Cyber Mission Expands AI Security Work for Infrastructure and Open Source
Anthropic has launched the Anthropic Cyber Mission , a long-term security initiative focused on two areas with broad downstream importance: defendin…
Stop your AI assistant from guessing addresses: live maps tools for Claude, ChatGPT and Cursor
Ask an AI assistant for a pharmacy that's open late near an address, or a realistic drive time, and you'll often get a confident answer that was nev…
Claude Haiku 5.5 vs Haiku 4.5: Apa yang Berubah dan Perubahan Merusak yang Harus Diperbaiki Pertama
Claude Haiku 5.5 ( claude-haiku-5-5 , dirilis 7 Oktober 2026) berharga 90% lebih murah daripada Haiku 4.5 untuk prompt hingga 100K token ($0,10/$0,5…
Claude Code read a file listed in .claudeignore 12 of 12 times; a Read deny rule blocked every read except grep -r
A .claudeignore entry changed nothing in Claude Code 2.1.289: the fake secret it listed came back in 12 of 12 attempts across Read, cat , grep -r ,…
Automating PR-Based Development with Claude Task Master
Automating PR-Based Development with Claude Task Master Claude Task Master ( claudetm ) is a command line tool that keeps Claude working until a goa…
Five Ways My AI Agents Went Wrong (and What I Changed)
I run a small software company by myself. Claude Code agents play the engineers, QA, marketing and so on. It works better than I expected, but almos…
How I set up Claude Code: one rulebook, a 12-step relay to use it daily
Claude Code used to feel like a brilliant teammate with no onboarding. Some days: tests first, small diff, asked before pushing. Other days: no test…
Anthropic Expands Cyber Verification Program With Tiered Claude Model Access
Anthropic has expanded its Cyber Verification Program (CVP), giving verified security professionals a three-tier route to use Claude Opus 5.5, Claud…
I Built a Full PWA Game in One Day with Claude Opus 5.5 and Claude Code (Here Is the Real Token Cost & Harness Setup)
On a Sunday, I turned a slightly silly idea into an actual game: Montanha: Zero Day , a cyberpunk platformer in the style of Mega Man X that runs in…
Claude Code mods: Minesweeper and testkit
My own harness, the tooling I run around Claude Code, comes with a custom trust score. That trust score decides whether I can leave the agent alone…
The Plugin That Turns Your Claude Code into a Continuously Self-Improving Monster
Originally published on Eigenwise on 11 September 2026. Something goes wrong in a session, so you write a rule. Next week the rule gets buried under…
I made CodeRabbit's reviews a third less noisy with an open-source Claude Code skill
AI code review has a noise problem. On a public benchmark of 50 real pull requests, CodeRabbit raised 300 issues. 77 of them were real bugs on the b…
I let a Claude Code agent handle my PR review comments. Only 1 of 6 bot comments was a real bug.
I work on a large production e-commerce monorepo (13 apps). I set up a Claude Code cloud routine that runs every hour: it reads new review comments…