DEV Community • 2026-08-13 22:15

Langfuse for LLM Observability: Tracing Agent Calls Instead of Guessing

An agent makes six tool calls, picks the wrong one on step four, and the final output is garbage. You stare at your logs. You see the input. You see the output. Everything in between is a void. That's the black box problem with agentic LLM workflows, and it's the reason I started looking at Langfuse seriously. If you're running multi-step agents (LangChain, custom loops, or any orchestration laye...

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Hacker News • 2026-08-13 22:07

Show HN: Mirage Browser, the deadest of internets. ~1000 tok/s 1998 internet

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DEV Community • 2026-08-13 22:06

Revisão de código antes do commit: agentes especializados pra cobrir o meu próprio ponto cego entre backend e frontend

O problema que ninguém nomeia até doer Quem revisa o próprio código fora da própria especialidade revisa pior — e isso vale mesmo quando o "time" é uma pessoa só. Num projeto pessoal com backend e frontend separados, meu background é forte em backend: anos de prática, um checklist de review que já vive na cabeça sem esforço. Frontend eu escrevo, mas não com a mesma profundidade — e é ex...

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DEV Community • 2026-08-13 22:04

Give your coding agent project memory without paying for it every message

If you use an agentic coding tool — Claude Code, or anything with a persistent instructions file — you've probably hit this. You start a CLAUDE.md (or .cursorrules, or AGENTS.md) with a few conventions. It's useful. So you add the architecture. Then the gotchas. Then the three things it keeps getting wrong. Six months later it's 800 lines, and you are paying for all 800 of them on every single me...

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DEV Community • 2026-08-13 22:02

Your MCP Server Needs a Capability Budget, Not Just Auth

Most MCP security checklists stop at “is this caller authenticated?” That is necessary, but it does not answer the operational question: what is this tool allowed to do during this run? A useful boundary is a capability budget: a short-lived, explicit contract for each tool invocation. It should constrain the action, target, resource, quantity, and expiry. The model can request a tool, but the ru...

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DEV Community • 2026-08-13 22:02

Agent OS: tratar as instruções de um agente como sistema, não como prompt

O problema: prompt cresce, ninguém sabe mais o que está ativo Todo assistente de IA interno começa do mesmo jeito: um arquivo de instruções que cresce a cada caso de borda descoberto. Alguém acha um comportamento errado, adiciona uma frase no prompt pedindo pra não fazer aquilo. Seis meses depois o arquivo tem duas mil linhas, ninguém sabe qual regra ainda vale, e regras novas contradizem regras ...

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DEV Community • 2026-08-13 21:58

I Built an Android App That Tracks Screens Using Computer Vision

I Built an Android App That Tracks Screens Using Computer Vision Most of my earlier projects were fairly conventional applications. They had screens. They had data. They had buttons. They had users interacting with information. Then I wanted to build something different. I wanted the application to look at the physical world through a camera and actually understand something about what it w...

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DEV Community • 2026-08-13 21:57

The caller gave up ten minutes ago: orphaned retries in agent fleets

Originally published on Loop & Retry — field notes on building LLM agents that survive production. Bounding a fleet's retry spend assumes every retry loop is working toward something someone still wants. Shared budgets, circuit breakers, decorrelated jitter, dead-letter quarantine — all four patterns cap how much a fleet spends recovering from failure. None of them ask whether the work is sti...

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DEV Community • 2026-08-13 21:56

IAM Roles Anywhere: AWS Access With Zero Static Keys

Every environment I have audited has the same ghost. An IAM user with an access key and a secret key. Created for a script, a cron job, a device that needed to reach AWS. It worked, so nobody touched it again. Months pass. Sometimes years. The key never rotates. And when someone finally remembers it exists, the harder question shows up: where is it configured? On which server, in which container...

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DEV Community • 2026-08-13 21:56

Failure modes in multi-agent teams: how a crew of agents breaks differently

Originally published on Loop & Retry — field notes on building LLM agents that survive production. The pitch for multi-agent systems is redundancy and specialization: split the task, let a planner plan and a critic critique, and the whole is more reliable than the parts. Sometimes. But a team of agents also opens a class of failures that a single agent simply cannot have — failures of coordin...

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DEV Community • 2026-08-13 21:55

Morning on a Banana Leaf: A South Indian Breakfast Still Life in CSS

This is a submission for Frontend Challenge - Comfort Food Edition, CSS Art. Inspiration For me, comfort food is closely tied to a South Indian breakfast at home. I am currently in Canada, and this piece came from missing India and the small everyday things that feel familiar when you are away from home. Idli, sambar, coconut chutney, a banana leaf and filter coffee are all part of t...

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DEV Community • 2026-08-13 21:47

It Works on Office WiFi: Shipping AR to People Who Will Not Install Anything

Every AR project I have scoped eventually arrives at the same quiet question, usually about twenty minutes into the kickoff call. Someone wants customers to see a product in their own room, we sketch the happy path, and then a person at the far end of the table says it out loud: are we really going to ask people to download an app for this? That question deserves more weight than it usually gets,...

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Newest questions tagged css - Stack Overflow • 2026-08-13 21:45

How To Make An Animate Menu Icon Show/Hide Menu

I'm trying to make the animated Menu Icon open ☰ and close X the menu links. Instead of making two separate buttons, I can just code it in one button. I've manage to make it open but closing it I'm struggling with, with HTML, CSS and JavaScript. Here is my codes and I not too sure what I need to add `<div class="menuIcon" id="menuIcon" onclick="myFunction(this); openNav...

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Newest questions tagged css - Stack Overflow • 2026-08-13 21:45

How to make an animated menu icon show/hide menu

I'm trying to make the animated menu icon open ☰ and close X the menu links. Instead of making two separate buttons, I can just code it in one button. I've managed to give my menuIcon an onlick openNav() and both a closeNav(). The onlick openNav is working fine, but closingNav() I'm struggling with, with HTML, CSS and JavaScript. Also, I'm trying to do this to remove the close button in the links....

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DEV Community • 2026-08-13 21:39

Nmap for Authorized Infrastructure Validation (Not Hacking)

Every deploy makes a promise about the network: "this box only exposes SSH and HTTPS," "the database is never reachable from outside the app tier." Nmap is how you turn that promise into a test that either passes or fails. Nobody has to take the security group's word for it. One rule before anything else: only scan systems you own or are explicitly authorized to assess. Point Nmap at a lab, a VM ...

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DEV Community • 2026-08-13 21:39

I built a free, open-source trading bot starter (Next.js)

A minimal, open-source trading bot built on the Picckles Signals API — a read-only REST API for stock trading signals. It's Next.js (App Router) + TypeScript, and deploys to Vercel with a daily cron out of the box. What it does The bot runs on a daily tick that: Checks the API for SELL/HOLD decisions on any open positions Pulls today's BUY signals, sized to your budget Persists state...

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DEV Community • 2026-08-13 21:38

Arca Sophia Open-Core: Building Air-Gapped Local AI Inference for Industrial SCADA/PLC Systems

Arca Sophia Open-Core: Building Air-Gapped Local AI Inference for Industrial SCADA/PLC Systems Integrating Artificial Intelligence into Operational Technology (OT) and Industrial Control Systems (ICS) presents a fundamental engineering trade-off: Cloud latency vs. Plant Security. In continuous industrial processing, sending telemetry to public cloud LLMs breaks air-gapped network desig...

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DEV Community • 2026-08-13 21:38

What Building a C++ Benchmarking Suite Taught Me About "Simple" Data Structures

We all know the Big-O complexity of basic data structures. Arrays are O(n) for search. Hash maps are O(1). Linked lists are... well, complicated. But when I set out to build hashbrowns — a C++17 benchmarking suite comparing arrays, linked lists, and hash maps — I discovered that theory and practice are very different beasts. Here's what I learned building this project from scratch, and why you sh...

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Geoff Graham • 2026-08-13 21:35

Lightning in a Bottle

A fragment of Michael Stipe’s speech (from 12 years ago!) for Nirvana’s Rock and Roll Hall of Fame induction that’s stuck with me for some time: Nirvana captured lightning in a bottle. And now, per the dictionary—off the Internet—in defining “lightning in a bottle” as, “Capturing something powerful and elusive, and then being able to […]

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DEV Community • 2026-08-13 21:34

Reflecting on 7-8 Years of Career Growth: Adaptability and Continuous Learning Key to Senior Data Engineer Success

Analytical Insights: The Mechanisms Driving Career Growth in Data Engineering In the rapidly evolving field of data engineering, career progression is not merely a product of time served but a result of deliberate, adaptive strategies. A 7-8 year trajectory to a Senior Data Engineer role, marked by multiple successful contracts, underscores the critical role of adaptability and continuo...

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