Ferramentas agênticas: Claude Code e Copilot
Assistentes que leem, escrevem e executam código por você.
Ferramentas agênticas: Claude Code e Copilot é uma aula grátis de Vibe Coding no CoddyKit. Esta é a aula 2 de 4. Você pode ler a aula completa abaixo gratuitamente — depois pratica ao vivo no navegador com um editor de código integrado e um tutor de IA 24/7. Faz parte do caminho de aprendizado de Vibe Coding, e seu progresso é sincronizado entre a web e o app CoddyKit. O curso de Vibe Coding inclui 4 aulas no total.
Partes desta aula ainda não foram traduzidas e aparecem em inglês.
Beyond Autocomplete
Some AI tools don't just suggest code — they act. They read your files, write new ones, run commands, and check the results, all from a single instruction.
These are agentic tools. The two you'll hear about most are Claude Code and GitHub Copilot. Think of them as a teammate you can delegate whole tasks to.
What 'Agentic' Means
A normal assistant answers a question. An agent takes a goal and works toward it in multiple steps — reading, writing, running, and adjusting.
Tell an agent 'add a contact form to my site' and it will find the right file, write the form, wire up the button, and tell you what it changed. You supervise; it does the legwork.
Claude Code: The Terminal Agent
Claude Code is Anthropic's agent that runs in your terminal (and inside editors too). You type a request in plain English, and it explores your project, edits files, and can run commands like installing packages or starting your app.
It's powerful because it works across many files at once and explains each step as it goes.
In Claude Code you might type:
"Add a dark mode toggle to my web app. Update the HTML, CSS and JavaScript so clicking it switches between light and dark themes."Letting Claude Code Run Things
The magic of an agent is that it can run code and read the output. If your app errors, Claude Code can run it, see the error, and fix it — looping until it works.
For safety, it asks before doing anything important, like deleting files or running commands. You approve each risky step.
"Run my project, and if there are any errors in the console, fix them and run it again until it works."GitHub Copilot
GitHub Copilot started as smart autocomplete — it suggests the next line as you type. It has since grown a chat and an agent mode that can make multi-file changes too.
It's built right into editors like VS Code, so the suggestions appear inline as faint 'ghost text' you accept with a key press.
Copilot's Ghost Text
As you type a comment or a function name, Copilot guesses the rest. You'll see grey suggested text — press Tab to accept it.
This is great for momentum: write a clear comment describing what you want, and let Copilot fill in the code below it.
// add two numbers and return the result
function add(a, b) {
return a + b;
}
console.log(add(3, 4));Comment-Driven Building
A neat trick with Copilot: write your intent as a comment first, then let the AI implement it. Your comments become a kind of prompt.
Clear comments lead to clear code — vague ones lead to guesses. The clearer you describe the goal, the better the suggestion.
// show a friendly greeting based on the time of day
function greeting(hour) {
if (hour < 12) return "Good morning!";
if (hour < 18) return "Good afternoon!";
return "Good evening!";
}
console.log(greeting(9));Claude Code vs Copilot
Both are agentic, but they shine in different moments:
- Claude Code — best for big, multi-step tasks and running/fixing code end-to-end. Strong reasoning, terminal-native.
- Copilot — best for fast inline suggestions while you're already typing in your editor.
Many builders use both: Copilot for flow, Claude Code for the heavy lifting.
The Supervise-and-Approve Loop
With agents you're the manager, not the typist. The healthy loop looks like this:
- Describe the goal clearly.
- Let the agent plan and act.
- Read what it changed (the diff).
- Approve, or ask for a fix.
You stay responsible for the result — the agent just moves fast.
Writing Good Instructions
Agents reward clear, complete instructions. Tell them the goal, any constraints, and how you'll know it worked.
A strong agent instruction reads almost like a small task ticket — specific enough that there's only one reasonable way to do it.
"Create a new file called todo.html with a simple to-do list: an input box, an 'Add' button, and a list below it. Adding an item should clear the input. Use only plain HTML, CSS and JavaScript in one file."When to Reach for an Agent
Use an agent when a task is bigger than a single line:
- Building a feature that spans several files.
- Fixing an error you can't figure out.
- Setting up or running a project.
- Refactoring or renaming across the codebase.
For tiny inline tweaks, plain autocomplete is often enough.
Quick Check
What makes a tool like Claude Code 'agentic' rather than just an autocomplete?
Recap: Delegating to Agents
Agentic tools turn you into a manager of code:
- Claude Code runs in the terminal, handles multi-step tasks, and can run/fix code.
- Copilot gives fast inline suggestions and has an agent mode too.
- Write clear instructions; review every diff; approve risky steps.
Next: browser-based app builders like v0, Bolt and Lovable that go from prompt to running app instantly.
Perguntas Frequentes
A aula “Ferramentas agênticas: Claude Code e Copilot” é grátis?
Sim — o texto completo de “Ferramentas agênticas: Claude Code e Copilot” é grátis para ler aqui na web. Para praticá-la interativamente (um editor de código integrado e um tutor de IA 24/7) e desbloquear o restante do curso de Vibe Coding, atualize para CoddyKit PRO. O curso de Vibe Coding inclui 4 aulas no total.
O que vou aprender em “Ferramentas agênticas: Claude Code e Copilot”?
Assistentes que leem, escrevem e executam código por você. Você pratica Vibe Coding com código prático que executa diretamente no navegador, e um tutor de IA 24/7 responde suas dúvidas enquanto trabalha na aula.
Preciso ter experiência prévia para começar Vibe Coding?
Nenhuma experiência prévia é necessária. Vibe Coding no CoddyKit é estruturado para alunos iniciantes até avançados, então você pode começar aqui ou desde o início e aprender no seu ritmo. Esta é a aula 2 de 4.
Quanto tempo leva a aula “Ferramentas agênticas: Claude Code e Copilot”?
A maioria das aulas CoddyKit leva cerca de 5–10 minutos. Cada uma é compacta e interativa, então você faz progresso constante e retoma exatamente de onde parou entre web e app.
Posso escrever e executar código nesta aula de Vibe Coding?
Sim. Cada aula de Vibe Coding inclui um editor de código integrado, então você escreve e executa código real direto no navegador e recebe feedback de IA instantaneamente — nenhuma configuração local necessária.
Todas as aulas deste curso
- Editores de IA: Cursor e Windsurf
- Ferramentas agênticas: Claude Code e Copilot
- Criadores de aplicativos: v0, Bolt e Lovable
- Escolhendo a ferramenta certa