Morning.dev

DEV Community • 2026-08-07 11:54

Ship a Production RAG Chatbot in a Weekend with Claude, pgvector, and FastAPI

You can stand up a genuinely useful retrieval-augmented chatbot in a weekend with three moving parts: Postgres (plus the pgvector extension) as your vector store, a FastAPI service as the glue, and Claude for the generation step. The one thing that trips people up on day one is that Claude has no embeddings endpoint — you bring your own embedding model, and everything else is standard web plumbing...

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7m read

DEV Community • 2026-08-07 11:54

I built 59 free browser-based dev tools in vanilla JS — here's what I learned

I've been quietly building Antigravity Tools — a collection of 59 free, browser-based developer utilities — and today I'm sharing everything I built and learned. Why vanilla JS? No React, no build step. The main constraint I set for myself: zero dependencies, zero server, zero telemetry. When you paste your JWT token into jwt.io, it goes to their server. When you use an online regex t...

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1m read

DEV Community • 2026-08-07 11:52

A batch report should know less than its manifest

Liquid syntax error: 'raw' tag was never closed

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1m read

/r/ReactJS - The Front Page of React • 2026-08-07 11:45

Puck 0.23 (visual editor for React) adds new drag-and-drop for reduced layout shift

Hi r/reactjs! We just released Puck 0.23, which introduces a new "static" drag-and-drop mode. Puck lets you drag-and-drop your own React components. Because we support nested layouts with any CSS display modes, this sometimes results in layout shift. To help with this, we just added a new "static" drag-and-drop mode that shows a line when dragging between parent (we call them s...

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1m read

DEV Community • 2026-08-07 11:43

Bug: cross site cookie restrictions

What went wrong? When a user logged in on my deployed frontend (https://domainA.app), the credentials succeeded, but they were immediately treated as unauthenticated. Protected endpoints (like /stats/admin/*) failed with a 401 Unauthorized status code. Crucially, this behavior did not happen on localhost. Why did it happen? This is caused by cross-site cookie restrictions ...

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1m read

Hacker News • 2026-08-07 11:43

Show HN: Akintu – AI agents trained on custom knowledge bases using RAG

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1m read

DEV Community • 2026-08-07 11:42

What are Agent Plugins?

Implementing Agent Skills and MCP servers as part of my development workflow has been a huge boost to my productivity. Long gone are the days where I'd actually have to leave my IDE to raise a pull request in GitHub, and then manually add that PR to a Jira ticket that's still impossible to find in 2026. Now it's just a matter of me asking GitHub Copilot to create the PR using my create-pr Agent ...

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8m read

DEV Community • 2026-08-07 11:42

Build a Team AI Agent from Claude Code with Runbear MCP

Runbear MCP lets you create and refine a shared AI teammate from Claude Code, even when the workflow is not fully specified yet. Instead of filling every model, tool, trigger, schedule, and deployment field up front, you can start with the outcome, answer the missing questions as they appear, and review the agent before it enters Slack. Disclosure: We build Runbear. This guide describes the curr...

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4m read

DEV Community • 2026-08-07 11:41

Galileo OSNMA and HAS: Europe's GNSS for embedded systems

Galileo OSNMA and Galileo HAS are changing how an embedded system can use satellite navigation. The job is no longer limited to calculating coordinates: a compatible receiver can verify the authenticity of Galileo navigation messages, use high-accuracy corrections, and contribute to a more resilient PNT architecture for drones, robots, vehicles, industrial systems and distributed infrastructure. ...

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25m read

DEV Community • 2026-08-07 11:40

Ethical Hacker Axioms: The First Three. 🛠️🧠

In a world obsessed with patching patches, true professionals stop to understand the root cause. Cybersecurity and system analysis come down to this core trilogy: 👁️ Axiom 1: If you can observe the internal state, you can understand it. 📏 Axiom 2: What you cannot measure, you cannot optimize. 🛡️ Axiom 3: Security stems from understanding how things work, not from fear of failure. Building sec...

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1m read

A BMAD workflow, end to end: shipping a feature the spec-driven way

DEV Community • 2026-08-07 11:36

A BMAD workflow, end to end: shipping a feature the spec-driven way

If the only way you've ever worked with an AI is to vibe code with it, which is to say you open the editor, type a prompt, and keep whatever looks roughly right, then this is the post I wish someone had handed me back when I was doing exactly that. It isn't another argument about why spec-driven development is better, because I already made that case here; it's simply one complete pass through a r...

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17m read

DEV Community • 2026-08-07 11:35

Why Hypothesis Testing is the Backbone of Data Science

Why Hypothesis Testing is the Backbone of Data Science Hypothesis testing is the backbone of data science because it provides a rigorous, structured way to distinguish real patterns from random noise and to make decisions backed by statistical evidence rather than intuition. It allows data scientists to validate assumptions, quantify uncertainty, and determine whether observed results ...

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4m read

DEV Community • 2026-08-07 11:32

Claude Code: CLAUDE.md vs Projects vs Memory — Which Persists What?

The most common frustration with Claude Code is re-explaining the same context at the start of every session. "We use Drizzle, not Prisma." "Don't use any in TypeScript." "The auth is in /src/lib/auth.ts." Claude has three mechanisms for remembering across sessions. They solve different problems and are appropriate in different situations. Using the wrong one means either re-explaining constantly...

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5m read

DEV Community • 2026-08-07 11:31

Understanding Statistical Distributions and Their Impact on Data Science

Understanding Statistical Distributions and Their Impact on Data Science Statistical distributions are the backbone of data science—they describe how data values are spread, how likely certain outcomes are, and how uncertain our measurements really are. Misunderstanding or misapplying a distribution can lead to invalid tests, biased models, and poor business decisions, while using the ...

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5m read

DEV Community • 2026-08-07 11:30

I built an open source library of animated icons for React, all using motion and Phosphor icons

I kept running into the same small annoyance. I'd need one animated icon, so I'd hand-roll it in Motion, and the result never quite matched the rest of my icon set. Stroke weight slightly off, optical size a bit different, timing eyeballed differently every time. One icon is fine. Ten icons and you've lost a day to something that should have taken five minutes. So I built Iconimate. Wha...

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2m read

DEV Community • 2026-08-07 11:30

Google Search Console Expands to YouTube and Social Channel Performance Data

Google Search Console is expanding beyond website measurement with experimental platform properties for social accounts, including YouTube. The update brings social-channel performance into Search Console Insights, allowing eligible site owners to review how people discover associated channels through Google Search, News and Discover alongside their site data. The important change is broader anal...

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5m read

DEV Community • 2026-08-07 11:26

I Built a Colour Palette Generator with Vanilla JavaScript

As part of my journey toward becoming a software engineer, I've committed to shipping one project a week using just HTML, CSS, and JavaScript before I move on to frameworks. This week's project: a Colour Palette Generator. It's a simple idea — click a button, get five random colors, click a color to copy its hex code. But small projects like this are great for practicing fundamentals: DOM manipul...

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2m read

DEV Community • 2026-08-07 11:26

FINRA-Compliant Storage with S3 Object Lock: A Practical Guide for 2026

FINRA Rule 17a-4(f) requires WORM storage. Here's how S3 Object Lock satisfies it on self-hosted infrastructure — with implementation examples and a comparison of which systems actually support compliance-mode locking. Key Stats Metric Figure FINRA enforcement actions citing recordkeeping (2025) ~340 Avg fine per firm for recordkeeping deficiencies $225K Firms using cloud WORM storage...

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6m read

DEV Community • 2026-08-07 11:23

Claude Code's Weekly Limit, Explained (and How to See It Coming)

The 5-hour limit is annoying. The weekly limit is the one that actually ruins your week: you wait out the usual break, come back, and you are still locked out, sometimes for days. This post explains how the weekly limit actually works, how to tell which limit you hit, why your usage drains faster than your activity suggests, and every way to see it coming before it lands. Disclosure: I work on Bl...

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5m read

Hacker News: Front Page • 2026-08-07 11:19

The Gargantuan Lie That Is Collapsing the Climate

Article URL: https://www.currentaffairs.org/news/the-massive-climate-lie-that-will-destroy-human-civilization Comments URL: https://news.ycombinator.com/item?id=49208686 Points: 3 # Comments: 0

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