How I Cut My Claude Code Token Usage by 2.8x!
Level Up Coding - Medium • 2026-04-22 14:52

How I Cut My Claude Code Token Usage by 2.8x!

(using Karpathy’s context engineering principles)MCPMark V2 benchmarks revealed something counterintuitive.When Claude moved from Sonnet 4.5 to Sonnet 4.6, backend token usage through Supabase’s MCP server went up, from 11.6M to 17.9M tokens across 21 database tasks.The model got smarter, but the backend token usage actually increased.MCPMark V2 benchmark visualized (Image by Author)The reason is ...

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16m read
DEV Community • 2026-04-22 14:51

Why most traceability matrices die — and how to keep one living

I used to think a traceability matrix was a table you updated before a certification audit and then forgot about until the next one. After five years of MDR audits, Technical File updates and more than one surprise notified-body question, I no longer believe that. A traceability matrix that "lives" is not a spreadsheet with cell comments. It is a connected, reviewable artefact of your quality syst...

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4m read
Sigstore Deep Dive: Unmasking the Magic Behind Keyless Verification
DEV Community • 2026-04-22 14:51

Sigstore Deep Dive: Unmasking the Magic Behind Keyless Verification

Introduction In my previous article, "Supply Chain Security: A Deep Dive into SBOM and Code Signing," we took Cosign's keyless signing for a spin. You run cosign sign, your browser pops up, you log in with GitHub, and boom—your container image is signed. No private key management. The moment the signing is done, the key is thrown away into the void. It was insanely convenient. But hone...

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21m read
Product Hunt — The best new products, every day • 2026-04-22 14:49

Fabric CLI

Make notes, tasks, and search, directly from the terminal. Discussion | Link

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1m read
Hacker News: Front Page • 2026-04-22 14:49

DuckDB 1.5.2 – SQL database that runs on laptop, server, in the browser

Article URL: https://duckdb.org/2026/04/13/announcing-duckdb-152 Comments URL: https://news.ycombinator.com/item?id=47864454 Points: 6 # Comments: 0

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1m read
Building Self-Improving AI Agents with React Three Fiber + pgvector
DEV Community • 2026-04-22 14:48

Building Self-Improving AI Agents with React Three Fiber + pgvector

Building Self-Improving AI Agents with React Three Fiber + pgvector What if AI agents could learn from each other's successes and failures? That's Meeseeks Hive—autonomous agents that generate code, execute it in sandboxes, and share knowledge through vector embeddings. How It Works 1. Agent receives task: "Write a retry function with backoff" 2. Generates JavaScript us...

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2m read
DEV Community • 2026-04-22 14:47

Make It Easy to Work Hard

If working hard feels harder than it should, the problem may not be you. Sometimes the real problem is how the work is set up. Early in your career, “working hard” often sounds like a character trait. Some people grind. Some people push through. Some people seem able to focus endlessly. So when you struggle to start, drift midway, or avoid coming back after a break, it’s easy to assume somethin...

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3m read
Hacker News • 2026-04-22 14:44

Show HN submissions tripled and are now mostly vibe-coded

Comments

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1m read
Memory management in Claude Code: Context Pipeline
DEV Community • 2026-04-22 14:43

Memory management in Claude Code: Context Pipeline

If you are building an AI agent that needs to survive longer sessions, context management becomes a systems problem very quickly. At first, the implementation looks simple. You append messages, keep tool outputs around, maybe summarize occasionally, and keep going. But once the session becomes longer, the same problems start showing up: prompts get too large, tool outputs dominate the context, ...

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10m read
DEV Community • 2026-04-22 14:39

DevOps Practices for Operations Leaders by Pablo M. Rivera

DevOps Practices for Operations Leaders by Pablo M. Rivera By Pablo M. Rivera | Hawaii, Colorado & East Haven, CT One of the most valuable lessons from my 25 years in operations is that devops practices for operations leaders requires both strategic thinking and tactical execution. Having managed teams across 12 states and coordinated operations from Hawaii to our East Haven headqu...

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1m read
DEV Community • 2026-04-22 14:36

The 3 isTrusted:false Bugs That Made LinkedIn Posts Impossible From My MCP Server

TL;DR I couldn't post to LinkedIn from my MCP server. Not "sometimes fails" — never works. I assumed one bug. I was wrong. I found three, stacked, and each one looked like success to every automation tool I tried. Here is the anatomy of why your agent's "I posted it!" lies to you when a rich-text editor sits inside a dialog. The symptom I ship Safari MCP — an MCP server t...

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7m read
DEV Community • 2026-04-22 14:36

I Ran a 13-Point Security Audit on My AI-Built SaaS Before My First Customer — Here's What It Found

I have a Stripe integration, a JWT auth system, magic link recovery, Redis-backed rate limiting, and a free tier that lets strangers use my AI generation feature without logging in. Last Friday I ran a full security audit on the codebase — before opening it up to real users at scale. The audit found 13 issues. One was a Critical business-logic bug I would have missed forever. Three were High seve...

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9m read
How To Enhance Your App With Oasis ROFL: A QuickStart Tutorial
DEV Community • 2026-04-22 14:34

How To Enhance Your App With Oasis ROFL: A QuickStart Tutorial

I have mentioned the Oasis ROFL (runtime off-chain logic) framework on several occasions. For most people, this explainer video would be enough. But for developers and dApp builders, who want to try things out themselves, a deeper dive is worth it. In this guide, I will give a quick introduction to ROFL and then share a QuickStart tutorial to help build a ROFL-powered app. ROFL in a nuts...

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5m read
DEV Community • 2026-04-22 14:30

Why AI Agencies are flying blind (and how to fix your LLM margins)

If you're running an AI agency, you're probably building some variation of RAG or agentic workflows for your clients. You deliver the project, it works great, and then the first OpenAI bill hits. Most agencies I talk to are still in the "winging it" phase when it comes to API costs. They use one master key for dev, one for prod, and maybe—if they're feeling fancy—one key per client. But fwiw, p...

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2m read
DEV Community • 2026-04-22 14:30

Stop Guessing – Use Golden Datasets for Prompt Evals

Quick Tip originally published on lukaswalter.dev. At some point, you will end up doing some form of prompt engineering. And often, it starts with vibes. You change a word or a phrase, add a little here, remove a little there, test it once, and it seems better. So you ship it. Then the next day, users complain that the quality of the answers got worse. The Problem: Prompt Regressions...

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2m read
DEV Community • 2026-04-22 14:29

SEPA pain.001 XML in 5 Minutes: Generate and Validate for Free

If you're building a payment system for European banks, at some point you'll need to generate a SEPA credit transfer file in the pain.001 format. The spec is 200+ pages. The XSD validation errors are cryptic. And most tools that handle this cost money. Here's a practical guide to generating and validating pain.001 files - with a free tool and no backend required. What is SEPA pain.00...

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3m read
DEV Community • 2026-04-22 14:28

Autoencoders and Representation Learning in Vision

Autoencoders are a type of neural network that compress data into a lower-dimensional space and then reconstruct the original input from that compressed representation. If you've ever encountered Principal Component Analysis (PCA), then you already have an intuition for how this works. The key difference is that PCA is a linear projection method, while autoencoders use neural networks, allowing t...

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9m read
My Manager Made Me Read the Dynamo Paper: It Changed How I Think About System Design
Level Up Coding - Medium • 2026-04-22 14:28

My Manager Made Me Read the Dynamo Paper: It Changed How I Think About System Design

How a paper-reading ritual at Amazon helped me develop better system design instincts, and the five papers that stuck with me the most.Continue reading on Level Up Coding »

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1m read
Migrate BehaviorSubject to Angular Signals
Level Up Coding - Medium • 2026-04-22 14:28

Migrate BehaviorSubject to Angular Signals

Angular signals give you first-class reactive state without pushing every change through an RxJS stream. This post maps common…Continue reading on Level Up Coding »

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1m read
Future of Data Analytics: What’s Next After AI (2026 and Beyond)
Level Up Coding - Medium • 2026-04-22 14:28

Future of Data Analytics: What’s Next After AI (2026 and Beyond)

The world of data is evolving faster than ever before. Not long ago, data analytics was mainly about writing SQL queries, building…Continue reading on Level Up Coding »

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