DEV Community • 2026-07-30 03:40

OpenEval: Why LLM Evaluation Needs a Standard Format

Every LLM evaluation framework today invents its own test case format, its own grader definitions, and its own results schema. DeepEval, Promptfoo, Inspect AI, and lm-evaluation-harness all solve the same core problem (checking whether a model's output is correct) but none of them can read each other's eval datasets. That means every time a team wants to compare frameworks, or move from a noteboo...

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DEV Community • 2026-07-30 03:39

Building an AI-Powered Innovation Wormhole: Transferring Solutions Across Industries Instead of Reinventing Them

Innovation is often described as the creation of something entirely new. In reality, many breakthrough ideas are simply successful mechanisms transferred from one domain into another. Nature inspired aerospace engineering. Video game matchmaking algorithms influenced logistics. Immune systems inspired cybersecurity. Financial risk models are now being applied to supply chain resilience. The chal...

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DEV Community • 2026-07-30 03:38

Handoffs can turn one task into a 15x token bill

Handoffs are useful when a specialist agent needs to take over a task. They also make cost easier to hide, because the bill is spread across graph nodes instead of one visible chat turn. Why can LangGraph handoffs multiply tokens? LangGraph handoffs can multiply tokens because each model-calling node may resend instructions, prior messages, retrieved material, tool returns, summaries, ...

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DEV Community • 2026-07-30 03:35

Security Notes for Serving Static Files with StayPresent

What to know about python static file security when using StayPresent's web.html/markdown — directory exposure, path traversal, and URL filtering. Security Notes for Serving Static Files with StayPresent Serving a status dashboard or a rendered README with web.html()/web.markdown() is convenient precisely because it automatically picks up neighboring CSS, JS, and images with no extra...

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DEV Community • 2026-07-30 03:33

How StayPresent's Logging Works (Without Breaking Yours)

A guide to python isolated logging with StayPresent's dedicated logger — no root logger mutation, what gets logged, and how to configure it. How StayPresent's Logging Works (Without Breaking Yours) A surprisingly common way for a third-party package to quietly break your application's logging is by calling logging.basicConfig() somewhere in its own code — which mutates the root logge...

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DEV Community • 2026-07-30 03:24

How I Built a Privacy-First Browser Game Portal with Click-to-Load Iframes

Embedding a browser game looks simple: <iframe src="https://games.example.net/my-game"></iframe> That line lets a third party join the page lifecycle immediately. It can download a large bundle, establish connections, run scripts, request storage, display advertising, or fail before the visitor decides to play. AI-assistance disclosure: I used AI to help draft and edit this ...

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DEV Community • 2026-07-30 03:24

Working with Let's Encrypt's Short-Lived tlsserver and shortlived Profile Certificates

Let's Encrypt issues TLS certificates with a 90-day validity period by default. However, as the industry is gradually shortening TLS certificate lifetimes—with the maximum eventually expected to fall to 47 days—Let's Encrypt already offers certificates using the tlsserver profile with a validity period of 45 days. Compared with the current default classic profile, the tlsserver profile removes de...

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DEV Community • 2026-07-30 03:21

I Built a Blood Donation Management System with the MERN Stack

Every year, thousands of people struggle to find blood donors during emergencies. I wanted to build something that could simplify that process while improving my full-stack development skills. So I built a Blood Donation Management System using the MERN Stack. The goal was simple: create a platform where donors, recipients, and volunteers can connect efficiently through a modern web application....

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DEV Community • 2026-07-30 03:20

Testing AI Coding Agents Beyond Code Generation: A Real-World Benchmark

1. Introduction Most public demonstrations of AI coding agents begin with an empty directory and end when a visible feature works. That is useful, but it measures only the first and easiest part of software engineering: generation. Real projects are stateful. They contain existing behavior, data that must survive, security boundaries, partially completed work, and verification steps tha...

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DEV Community • 2026-07-30 03:20

n8n AI Workflow Builder Brings Natural Language Automation to Cloud Workflows

n8n has made its AI Workflow Builder available to Starter, Pro, and Enterprise Cloud customers, bringing natural-language workflow creation into the automation platform. The feature is designed to turn a written description of an automation into a live n8n workflow, then help users test and refine the result without leaving the workflow-building environment. The development matters because workfl...

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DEV Community • 2026-07-30 03:14

I gave an AI agent a business and $0. It found the one thing AI can't sell.

I set up Claude Code to run a business autonomously. Its own memory directory, a decision log, a world-model file. Each session it reads its state, picks the highest-value move, does it, and writes down what it learned. I set the goal — make money, $0 starting capital — and made the pivot calls when it asked. It did the work. Thirty-one sessions later it has earned exactly $0.00. That's not the ...

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DEV Community • 2026-07-30 03:13

The Python import that silently disabled a feature for months

I was reading an open-source instrument-control library to add docstrings — a boring job, deliberately. Boring jobs make you read code you'd otherwise skim. About two hundred lines into one function I found a caching feature that had never worked. Not "worked badly." Never executed successfully, not once, and never left a trace of failing. Here's the shape of it, reduced to the part that matters...

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Hacker News • 2026-07-30 03:09

Show HN: Alarium – a live 3D flight tracker built on community ADS-B

Comments

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DEV Community • 2026-07-30 03:06

5 Emerging Developer Tools Transforming AI and Cloud Workflows

NovaCode AI Assistant What it is: NovaCode is an AI-powered coding assistant that understands context across multiple files and projects. Unlike traditional autocomplete tools, it analyzes relationships throughout your entire codebase to provide more relevant suggestions. Why now: Released as open-source by a team of ex-Google engineers to compete with proprietary AI coding tools, maki...

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DEV Community • 2026-07-30 03:00

You Deleted BM25 the Day You Bought a Vector Database. Your Fraud Queue Noticed

BM25 is a ranking function from the 90s. No GPU, no embedding API, no per-token bill. And in a fraud operation it still wins half the queries — because fraud analysts don't search in prose. They search in identifiers. Watch a fraud analyst's search history for a day: decline code 4863. Rule VEL-013. BIN 529904. Promo code FIRSTBUY20. Order #48213. These aren't concepts. They're strings — and "sem...

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Product Hunt — The best new products, every day • 2026-07-30 02:58

Virre

A private relationship system for your career and network. Discussion | Link

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Experienced Devs • 2026-07-30 02:58

I miss when development was actually solving problems

Lately I've been having thoughts about what the point is. Back in the day when I got into programming, I just wanted to make cool things. I made a lot of cool things. They took time so I knew they were genuinely either unique, special, or in any other case, mine. I made twitter/reddit/discord bots, data visualizations for social media platforms, and useful tools for my communities I was involved i...

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Hacker News: Front Page • 2026-07-30 02:55

NSF pilots 4-year PhDs with industry research placements

Article URL: https://www.nsf.gov/news/nsf-partners-universities-industry-pilot-initiative-four Comments URL: https://news.ycombinator.com/item?id=49105642 Points: 3 # Comments: 0

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DEV Community • 2026-07-30 02:53

Multiple Bots in One Process with StayPresent

How to run multiple python bots in a single process using StayPresent's bot_file list and bots parameter, with independent crash recovery for each. Running Multiple Bots in One Process with StayPresent If you're managing a Telegram bot pipeline with several workers, or a Discord bot that runs alongside a separate polling worker, deploying each one as its own hosting service quickly g...

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5m read
DEV Community • 2026-07-30 02:53

Self-host Forgejo on your tailnet with Docker Compose and Tailscale

You want your own Git host. Maybe you're getting off GitHub, maybe you just want somewhere private to keep the repos that shouldn't be on someone else's servers. So you go looking, and every guide hands you the same shape: a public DNS record, ports 80 and 443 open to the entire internet, a reverse proxy, a certificate, and a login page that anyone on earth can now knock on. For a private code ho...

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