Understand it,not just finish it.

Learn anything with a plan you'll actually finish — and truly understand.

planany.ai/explore/langgraph-research-agent

Build a LangGraph research agent

7 days · 14 items
To start3
D2Build
Add a calculator tool to the agent
D3Learn
Summarize old turns to fit context
D3Build
Wire web search into the loop
Learning1
D2Learn
Function calling and tool schemas
Validating1
D1Learn
Why you resend history each turn
Mastered1
D1Learn
Plan, act, observe: the core loop

VERIFIABLE LEARNING

Learning only counts when it can be validated.

Fails

“Understand agent loops”

Passes

Explain what the loop sends each turn, and what breaks without it.

Fails

A plan full of tasks

Passes

Learn the concept first, then build a small working example.

Fails

Done, but not understood

Passes

Validation questions reveal gaps before it's marked complete.

HOW IT WORKS

From one goal to real understanding

CLARIFY

Clarify the goal before making the plan

One question at a time. Skip ahead when the goal is clear.

Plan chat
Learn LangGraph and build a research agent
syllabus.pdfSearching: LangGraph docs
How much time per day? What do you want to build by the end?
Type your reply…
PLAN

A day-by-day plan with practice built in

Concepts first, then hands-on builds — as a schedule or a Kanban board.

Plan · Kanban board
ScheduleBoardOutline
To start
D4Learn
Memory: summarize old turns
D4Build
Calculator tool for the agent
Learning
D3Learn
Agent loop: plan, act, observe
Validating
D2Build
Trace one full tool call
D3Learn
How tool results flow back
Mastered
D1Learn
Function calling basics
“Mastered” is earned by AI verify — cards can't be dragged in
LEARN

Every item becomes a focused lesson

Grounded in web search, real code, or your docs.

Lesson · from the key points
Sections
The agent loop
Resending history
Tool calls
Tool results
Build: calculator

Why you resend the history each turn

The model is stateless. Each turn, it only sees what you send now.

TIP · Send only the last message and the agent forgets the tool.
Q1Recall · What happens if turn 3 drops the history?
Live web searchReal codebasesYour uploads
VALIDATE

Find gaps before you mark it done

Socratic follow-ups send vague answers back until clear.

Validate · Socratic questioning
Send only the latest message. What happens on turn 3?
It forgets the earlier tool results…
Sent back

Almost. Name what's lost, and what it breaks.

Role of history in the loopmissing
How tool results flow backweak
Fill the gaps, retest

And more

Bring your own materials

Syllabus, paper, or a whole book.

Grounded lessons

Web search, real code, your docs.

English & more

Plans and lessons in multiple languages.

Plans side by side

Progress at a glance.

Explore public plans

Start from what others built.

Progress you can trust

Mastered means questioned and passed.

Go from “I kind of get it”
to “I truly understand.”

Start with a goal. Learn with clarity at every step.