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
MCP vs API Is the Wrong Question
Recently, I saw a LinkedIn post discussing "MCP vs API" and felt like we needed to choose one. But I...
Source: DEV Community
TutorialsOrdinary
Running Chrome DevTools MCP in Multiple Claude Code Sessions
One Claude Code session driving a browser through chrome-devtools-mcp works fine. Open a second...
Source: DEV Community · Claude
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You probably don't need a dedicated vector database (Use pgvector instead)
Why you don't need a separate $400/mo vector database for RAG. How to use Postgres with pgvector and HNSW indexes for sub-10ms similarity search.
Source: DEV Community
TutorialsOrdinary
A Four-Signal Placement Gate for Local-First Agent Work
A backend engineer boarded a late train with a half-finished agent run still sitting in a terminal....
Source: DEV Community
TutorialsOrdinary
How I Run 4 Claude Code Agents in Parallel on One Repo Without Chaos
TL;DR I run up to four Claude Code agents at the same time on a single repository by...
Source: DEV Community · Claude
TutorialsOrdinary
La paradoja de la velocidad: La ilusión de la productividad infinita y el cansancio invisible de la IA.
Hace unos días, tuve que hacer algo que hacía mucho tiempo no consideraba necesario en mitad de una...
Source: DEV Community
TutorialsOrdinary
Two identical runs scored 89 and 89. Two cases had flipped.
Read on: the A/B test this corrects · 繁體中文版 Two weeks ago I published an A/B test: I cut 41 AI...
Source: DEV Community
TutorialsOrdinary
The Retro: What ClinicLive Really Cost, and What the AI Got Wrong
Fourteen parts ago, this series made a promise: build a real app with AI and hide nothing — every...
Source: DEV Community
TutorialsOrdinary
Most AI "Reasoning" Traces Are Just the Answer, Written Backwards
You've probably watched an AI think through a problem step by step, nod along with the logic, and...
Source: DEV Community
TutorialsOrdinary
Where MCP Ends and A2A Begins: Building a Two-Agent Support Workflow Without Tool-Wrapping
When an agent needs help from another service, there is an architectural question to answer first:...
Source: DEV Community
TutorialsOrdinary
Tool search hid 40,170 tokens from our first request. auto:5 put them all back
With MCP tool search on, which is the default, the first request of a fresh Claude Code session on...
Source: DEV Community · Claude
TutorialsOrdinary
AI Agent vs Agentic AI: The Distinction That Changes Your Architecture
One is a component you build. The other is how you wire many together. Confusing them costs months. Here's the architecture distinction.
Source: DEV Community
TutorialsOrdinary
How do you debug something that is allowed to be wrong?
Yesterday afternoon a runtime I wrote created 70 paragraphs on the same draft article. It was...
Source: DEV Community
TutorialsOrdinary
AI-Generated Tests Can Make Coding Agents Worse. Here's How to Check Yours
ExecCritic found that weak generated tests reduced repair success. A runnable Python example shows how to catch a test that approves the wrong fix.
Source: DEV Community
TutorialsOrdinary
How I Built a 45-Agent AI Panel to Brutally Roast Startup Ideas (Architecture Deep Dive)
Every founder knows the feeling: you share a new startup idea with friends, and they all smile and...
Source: DEV Community
TutorialsOrdinary
Word Sense Disambiguation: How NLP Understands Word Meaning in Context
Here is a sentence that will break most computers. “I went to the bank.” Did you go to a...
Source: DEV Community
TutorialsOrdinary
Azure Functions Hosted Skills: I Built a Scam-Checking Agent, Then Removed the Agency
Is that webshop legit? Most of us have pasted a URL into a reputation checker at least once. The...
Source: DEV Community
TutorialsOrdinary
KPIAssembler: stop hand-picking KPIs, let AI propose them
Text-to-SQL looks great in a demo. Then someone ships a conversion rate that JOINs without ON, a...
Source: DEV Community
TutorialsOrdinary
From 289 MB to 15 MB: What Migrating from Electron to Tauri Actually Cost
WatchMe is a small macOS menu-bar app I built: it lists your running processes, you tick the ones you...
Source: DEV Community
TutorialsOrdinary
Nexpath Review: Can an AI Prompt Quality Layer Make AI Coding Safer?
AI coding tools have made it easy to go from an idea to working code. You describe what you want,...
Source: DEV Community
TutorialsOrdinary
🪐 Astra won't kill anything. It will silence everything. (And why that's good news.)
In discussions around AI-assisted programming with LLMs, I often see two opposing camps. And since...
Source: DEV Community
TutorialsOrdinary
Being a Software Engineer Is Harder in 2026 Than It Was Five or Ten Years Ago
Believe it or not, it's harder to be a software engineer in 2026 than it was five or ten years ago....
Source: DEV Community
TutorialsOrdinary
I know more than AI
I deleted a working function today. It ran. It was clean. It was better written than the version in...
Source: DEV Community
TutorialsOrdinary
Next.js + Supabase: The Free-Tier Stack I Use to Ship Client Sites Fast
I ship client sites fast on a simple free-tier stack: Next.js for the app, Supabase for...
Source: DEV Community
TutorialsOrdinary
Your agent's confirm token is one-shot. Your write still happens twice.
A production bug I shipped, why the obvious fix was incomplete, and what actually closes it. ...
Source: DEV Community
TutorialsOrdinary
Agentic Accessibility - Can AI help us ship more accessible code?
Many All of us are coding with AI these days. There is a lot of momentum; code is being produced at...
Source: DEV Community
TutorialsOrdinary
2,894 Requests Hit My Top Page. Nobody Ever Requested It.
A WordPress function documented in five words quietly deleted the non-English part of every URL my crawler analytics recorded — turning hundreds of distinct pages into a single confident-looking row.
Source: DEV Community
TutorialsOrdinary
Trying Out AgentInspect
A small TypeScript experiment comparing AgentInspect and Promptfoo for local agent trajectory checks.
Source: DEV Community
TutorialsOrdinary
AI Model Upgrades Aren't Patches. They're Silent Breaking Changes Wearing a Version Bump.
Intro AI Model Upgrades Aren't Patches. They're Silent Breaking Changes Wearing a Version...
Source: DEV Community
TutorialsOrdinary
622 of our 5,087 LLM API calls never returned an answer
Every tutorial counts calls. Your bill counts attempts. Here is the real error distribution from 5,087 production calls, which failures are worth retrying, and why a timeout is the only one that actually burns tokens.
Source: DEV Community
TutorialsOrdinary
A blended recall number hid an entire class of leak
chamnan is a Claude Code plugin that keeps engineering context in the repository, so an agent stops...
Source: DEV Community · Claude
TutorialsOrdinary
When AI Writes the Code, What Makes an Engineer Valuable?
Claude and OpenAI are bringing what feels like a real storm to IT. I don’t expect that storm to hit...
Source: DEV Community · OpenAI / Claude
TutorialsOrdinary
prefill and default look the same in Console. Only one of them lets an agent skip your required field.
I have 23 audit Actors on the Apify Store. They all do a version of the same thing: take a public...
Source: DEV Community
TutorialsOrdinary
Can Qwen 3.8 running on your laptop really replace Claude Opus for Agentic coding?
Agentic coding on a Strix Halo laptop with Qwen3.8-27B and Flash-Next, the LlamaStash and Pi setup behind it, and the tuning
Source: DEV Community · Qwen / Claude
TutorialsOrdinary
I made my Apify Actor an AI agent tool, then read every byte it sent back
I exposed my jobs Actor through the Apify MCP server and logged the real traffic — the schema the agent sees, a green run that returned nothing, a 45-second ceiling on every call, and a 45x payload cut.
Source: DEV Community
TutorialsOrdinary
The Retry That Restored Access
Retries keep distributed systems moving through timeouts and temporary failures. In an access system,...
Source: DEV Community
TutorialsOrdinary
A happy-path MCP demo proves almost nothing about tenant isolation
Most MCP demos look the same. A tool is registered. A client calls it. The tool returns the expected...
Source: DEV Community
TutorialsOrdinary
What actually changes when an MCP server leaves your laptop
An MCP server that works locally is not the same as an MCP server that runs behind a gateway other...
Source: DEV Community
TutorialsOrdinary
My Agents Never Get Tired. I Do: On Satisficing
I approved a prompt on a Tuesday morning and went to make a cup of Irish breakfast tea. By the time I...
Source: DEV Community
TutorialsOrdinary
I Think Developers Are Building Too Much Software
There was a time when the difficult part of building software was writing the software. Today, that...
Source: DEV Community