WEBVTT

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So we have our little chat session here,
and

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we could now build up on that in plan
or agent mode, but I'll

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instead start a new session,
which we can do by clicking this plus,

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uh,
button here or using the appropriate

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You can also use the dropdown here to
start a

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chat in a separate window
or in the editor area, as I showed you

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before,
or to use different kinds of agents,

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later.
You also have various configuration

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explore later. For now,
I'll just start a new session.

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Now, I then see my old session here.

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Again, I could archive it, or
if you don't want to see it up here,

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this button to have it at the side.
That's another option.

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So then you see all your chat sessions
here, and you can go back to them

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anytime,
but you can go back to your new session

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side. So now I want to build
that CLI program

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I mentioned. For that,
I'll go to plan mode here actually,

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typically a good idea to use plan mode
if you're tackling a more

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complex feature because you can think of
plan mode as a

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prompt improvement mode.
You give the AI some prompts, some

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task,
and the plan mode then tries to refine

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tries to increase your chances of getting
a good result.

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You don't need it for simple changes,
but for more complex changes,

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idea. So here I'll say,
"I want to build a CLI tool

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user data." Again,
we could have just built up on

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but here, we'll start from scratch.

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Now, I'll use a different model here,
and before I hit

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enter or press this button,
please notice that there is this settings

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icon here. You can tweak this mode, this

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plan mode, and the same
is true for other modes.

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To be precise, you can tweak
which tools are available to this mode

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because all these chats,
all these agents here in

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the chat mode,
have access to various tools they

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can use to provide better results.

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For example,
a read tool to read files in your

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workspace,
and you can expand this to have more

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fine-tuned access to subtools
or the specific tools that are

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available here to check for errors,
to read a file,

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to see your last commands in terminal
and so on.

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And you see which tools your agent,
the plan agent in this case,

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has access to. And, of course,
you can change these tools too,

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noting that, for example,
this plan agent does not have access to

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tool to edit files.
The ask agent we used before also

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doesn't have this access.
It can't create files,

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can't create directories.
It can do none of that.

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It can search, for example, in your code

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base to find relevant context, for

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example. It can also do web search to find

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documentation, for example,
and therefore it has some tools that

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help it be a useful planning agent in the

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end.
You could also enable Python-specific

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from my Python extension or MCP tools,
which we'll also explore

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later. Now, I won't change any tools here,
but it's worth noting that you can

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configure those tools that
are available to the agent,

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configure custom agents means.
You can build your own agents with

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exactly the tools you want it to have.

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So let's now hit enter and start planning.

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Now, as you see,
during the planning phase,

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It gathers relevant context,
and you can click on each of these steps

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details.
You see it found some files it wants to

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look at to understand
which Python version we're, for example,

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using and whether certain third-party
libraries are

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available,
and then it generates this plan.

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So here,
it wants to start by adding some

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third-party packages it wants to use,
and then edit my file

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to, well, implement this program.

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Now, as you see,
it asks me some questions here,

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questions,
but depending on the task you gave the AI,

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mode,
you might get some because the whole idea

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build a solid plan, and
if you did not provide enough information

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initial prompt,
it might ask for clarification.

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So here, I'll provide these answers.

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I wanna use argpars,
only have basic fields, and

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I'm fine with using standard output, uh,
and this output

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flag for file export. So I'll send
that response so that it

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can refine the plan based on my responses,

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and I should now get that final plan,
which is the same plan as before with

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my responses incorporated. Now,
it has a follow-up

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question,
if I wanna support different languages

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I don't need that, so I'll answer
that as well, and you can go back

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sometimes until it has that final

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plan. But now it's ready for

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implementation, and now there
are a couple of options.

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You could switch to agent mode because
remember, in plan mode, it can't

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edit anything,
so you need to switch to a mode where it

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files, and agent mode
is the most powerful mode regarding

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that. But you don't have to. There
is this start

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implementation button,
which you can press to automatically

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agent mode and start the plan.
If you wanna do it manually,

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say, "Do it," or something like this, eh,
but alternatively,

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you can click start implementation,
or you could switch to a different

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agent that should execute it,
but we'll ignore that for now.

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I'll just start implementation like this.

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Well, and technically here,
I then still have to hit enter.

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You can also do that
if it still has a question for you,

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still give you some result,
but the result might then not be perfect

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as good as possible because you didn't
answer all questions, but you can

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start implementing at any point in time.

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But now in agent mode, which is
that third and arguably most

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important mode, it goes ahead
and edits the project.

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It adds files and edits files.
It can do all these

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things.