AI Tutorials & Practice
收录 AI 工具教程、提示词、安装部署、配置指南、开发实战与可复现步骤。
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TutorialsOrdinary
How to stop your AI from finding new errors on every review
A review protocol that challenges the scheme first, then the code, then stops. Full prompt included.
Source: DEV Community
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Three registers, three alphabets, no APIs: building pay-per-event actors for company data
I build and sell Reestri, a small catalog of paid Apify actors that answer one kind of question: who...
Source: DEV Community
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Beyond the Demo: Architecting a Security-First AI Journal with Gemini
Most "AI-powered" side projects follow the same arc: a slick demo, a hardcoded API key, one shared...
Source: DEV Community · Gemini
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🌟 The CI Gate Rejected the Terraform Change—but the LLM Still Ran
How I added a deterministic trace contract to an AI Terraform reviewer so rejected infrastructure...
Source: DEV Community
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I Let AI Design Tools Build My Portfolio Site — Clients Noticed
A portfolio website should make it easy for a potential client to answer three questions: What do you...
Source: DEV Community
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The Best Academic Search API for Humans and AI Agents in 2026
Quick answer: the best academic search API for AI agents in 2026 is Valyu, because it is the only one...
Source: DEV Community
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What do you build when you can build anything?
My hot take is: Telling people that they have to build endlessly is very, very, very bad advice. If...
Source: DEV Community
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My AI Gateway Added 400ms to Every Request. Here's Where It Went
If your AI application suddenly becomes 300–500ms slower after adding an AI gateway, the first...
Source: DEV Community
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Why I'm Building ShrekOS When Containers Already Exist
Useful AI agents keep forcing a bad choice: lock the environment down until it is useless, or hand the agent your real machine. ShrekOS is my attempt to move that trust decision below the agent, into the operating system.
Source: DEV Community
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Your System Prompt Has a Shelf Life: Maintaining Prompts as Models Improve
Anthropic removed over 80% of Claude Code's system prompt for Claude Opus 5 and Claude Fable 5, and...
Source: DEV Community · Claude
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React, Next.js, Svelte, Zod: none of them can tell AI who they're actually for
Your coding agent is good at reading code. Point Claude Code or Cursor at a repo and it...
Source: DEV Community · Claude / Cursor
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Shopify's agent-commerce category filter doesn't filter. We checked 190 stores.
Since 2026 every Shopify storefront answers an agent-commerce endpoint at POST /api/ucp/mcp,...
Source: DEV Community
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From Local Traces to Production Observability for Google AI Agents
Most difficult agent incidents begin with one question: Why did the agent do that? Why did it...
Source: DEV Community
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I Found 3 Security Vulnerabilities in My Own AI Agent's Tool Access
I built GeoMart for OpenAI's WebMCP Challenge: a storefront where a human fills in a live,...
Source: DEV Community · OpenAI
TutorialsOrdinary
The Last Time I Googled an Error Message
I don't remember the last time I pasted an error into Google. Not the date. I mean the habit left...
Source: DEV Community
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Stratagems #27: Alex Watched the AI Wait. He Said Everything Was Normal.
Rather pretend not to know than pretend to know and act on it. Stay still. Hide the move. Wait like...
Source: DEV Community
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Accountable Generation: Intent as the Artifact of Record
Every serious engineering organization has spent decades building governance around one artifact:...
Source: DEV Community
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I think I found my ideal job
Have you ever read a job posting and your heart just sings the song of "HIRE ME PLEASE!!!", yeah,...
Source: DEV Community
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GLM-5.3-Flash: A Geopolitical Disruptor Hiding in an Ultra-Cheap Model
Before the world knew it was a product of Z.ai, a massive Chinese tech player, this model was running...
Source: DEV Community · GLM
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My Code Works. An AI Wrote It. Neither of Us Knows Why.
here's a meme we've all posted some version of. "My code works and I have no idea why." Classic....
Source: DEV Community
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73% of What We Blocked in a Month Was One Syscall Your Sandbox Cannot See
For the last month, every AI coding session on this machine ran under grith, which intercepts every...
Source: DEV Community
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I Let an AI Chatbot Answer Buyer Questions. It Almost Cost a Deal
A real estate website can generate a buyer inquiry in seconds, but one wrong chatbot answer can undo...
Source: DEV Community
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I'm 12. A dev asked me to expand my architecture. Here's the deep dive — schema, RLS, fallback chain, and the z-index war.
My last article shared the high-level architecture of KODA (my AI coding mentor built on a POCO C55)....
Source: DEV Community
TutorialsOrdinary
How to Stop Leaking API Keys and PII to LLMs: Zero-Trust In-Memory Sanitization for Cursor & Claude
If you are using AI coding assistants like Cursor, Windsurf, Claude Desktop, or ChatGPT, you have...
Source: DEV Community · ChatGPT / Claude / Cursor
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Architecture of an Auditable Al Chatbot: Multi-Agent Routing with Open Knowledge Format
TL;DR I learned and applied Open Knowledge Format (OKF), a vendor-neutral Markdown-and-YAML format...
Source: DEV Community
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Prompts Lie. Permissions Don't.
Why tool scoping matters more than anything the model is told Part 7 findings of an experiment:...
Source: DEV Community
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I Don’t Think I’m Losing My Memory. I Think I’m Trying to Think at AI Speed.
Something strange has been happening lately, I keep forgetting small things. Not names. Not...
Source: DEV Community
TutorialsOrdinary
I got sick of regenerating AI ads over one typo, so I made this
While making social media creatives for clients. AI tools design them fine now, but the output is one...
Source: DEV Community
TutorialsOrdinary
Stop Fighting Cursor: Treat It Like a Junior Dev, Not a Magic Wand
You are likely using Cursor wrong. Here is how to set boundaries for the AI so it stops hallucinating your architecture and starts delivering usable code.
Source: DEV Community · Cursor
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Reviewing AI code from juniors is slower than writing it yourself
The junior's pull request appeared fantastic. They had made clean commits, maintained a tidy...
Source: DEV Community
TutorialsOrdinary
Threat modeling LLM tool-calling
A worked example of the frontmatter contract, and a short threat model for agents that are allowed to call tools.
Source: DEV Community
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My Agent Found Real Improvements. The Statistics Still Killed the Promotion.
Previously: 9 Bugs That All Looked Like a Working System · I Built an AI That Rewrites Its Own...
Source: DEV Community
TutorialsOrdinary
Human-in-the-loop patterns for AI agents: when and how to make an agent stop and ask
Three real patterns for gating an agent before it does something irreversible, drawn from projects I built.
Source: DEV Community
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Kubernetes network policies: your cluster is flat until you say otherwise
Here's a fact that surprises people new to Kubernetes and should genuinely alarm them a little: by...
Source: DEV Community
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I Gave an LLM the Keys to Rewrite Its Own Prompt — Then Built a Gate That Said No 4,150 Times
Previously: 9 Bugs That All Looked Like a Working System · I Built an AI That Rewrites Its Own...
Source: DEV Community
TutorialsOrdinary
Generating test cases is the easy part
There is a ceiling on your test coverage and it is not technical. Running tests has been a solved...
Source: DEV Community
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Two Gates, No Legal Move
My publish-pass agent hit a beat that no source label could satisfy — every relabel that cleared one automated gate tripped another, provably, by arithmetic. The fix wasn't to relabel harder; it was a recorded, attributable waiver, reserve…
Source: DEV Community
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The Three-File System That Fixed Claude Code's Amnesia Across 11 Projects
I run Claude Code across eleven projects at the same time. Not eleven files. Eleven separate...
Source: DEV Community · Claude
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I made Claude Code and Codex race on my repo. The rule went against the agent that did more.
Every week someone asks which coding agent is better, and every answer is a vibe. I wanted a...
Source: DEV Community · Claude
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I asked Claude to design a PCB. Here's exactly where it stopped working.
I have been building an AI-native PCB editor for a few months. Before I wrote a line of it, I did the...
Source: DEV Community · Claude