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Level Up Your AI Skills

Mindset & applied AI for real work

For developers, vibe coders and anyone new to AI at work: 200Lab shapes the mindset and the method that let you hand work to AI the right way and verify the result.

3,000+
Learners
20+
Mentors
65+
Partners
134K+
GitHub stars
200Lab Store · Customer careAI agent on duty#2L-240917

Hi, order 2L-240917 arrived on 27/9 with 2 ceramic vases broken. Could you refund me? My phone is 09•• ••• 812

✓ pii.mask1 phone number masked before the model

orders.lookup2L-240917200 · 142mskb.search"broken item"3 chunks · 88ms

guardRefund 2,400,000 ₫ > limit 2,000,000 ₫ → hand off to staff ticket CS-5521

Order 2L-240917, 2,400,000 ₫, delivered on 27/9 [1]. Items broken in delivery are refunded within 7 days [2]. This one needs staff approval, so I have passed it to Hạnh in customer care.

[1] orders#2L-240917[2] Returns policy §3.2

✓ grounding2/2 claims sourced · no refund promised

  • trace 3c81e0
  • 6 steps
  • PII 1 masked
  • tool 2/2 · 200
  • guard → 1 human
  • grounding 2/2
  • replay ✓
Illustrative simulation

We have trained teams at

  • Tân Cảng partner logo.
  • OnePay partner logo.
  • Viettel High Tech partner logo.
  • Microtec partner logo.

Learning from real work

How you learn at 200Lab

200Lab shapes the mindset and the method; you practice on your own assignments and verify the results.

70%Most learning time is spent practicing through exercises and real projects.
  1. Reading-first storytelling

    Each lesson starts with a question, then uses diagrams, code, and verifiable technical decisions.

  2. Work with AI agents on your own assignments

    Four concepts you will use throughout the course

    harness
    the layer around the agent that decides what it may call, and with which permissions.
    skill
    a package of instructions and tools that helps the agent do one kind of work well.
    MCP
    the connection standard that lets an agent use external tools and data.
    workflow
    a chain of checked steps that fits the agent into the process you already have.
  3. Checkpoints run on your machine, results live in the repo

    eval · lab 03 · agent harnesssample data
    Sample checkpoint results from Lab 03
    CheckpointStatus
    01 · tool schema is validpass
    02 · policy blocks writes outside the sandboxpass
    03 · retry on MCP timeoutneeds fix
    04 · trace records every tool callpass
  4. Mentor review against a rubric

    Mentors work alongside you and review your work against a rubric, concretely, on your own code and run results.

  5. Flexible ways to learn

    Learn Online at any time; Offline classes are opening soon so you can meet Mentors in person.

Agent loopsample data

An agent is not a prompt. It is a loop with constraints. A tool call is a proposed action, not proof that it happened. The harness is where you set the boundaries: what may be called, with which permissions, and which results are trusted.

INTENTthe user's questionCONTEXTrepo · docs · stateMODELproposes a tool callname + argumentsHARNESSpolicy · budget · scopeallow / denyEXECUTORmcp / internal toolruns for realOBSERVATIONresult · error · costfed back into contextproposeallowobservationdeny → model proposes againTRACEevery edge is one log line: tool, arguments, time, tokensappend-only
INTENTthe user's questionCONTEXTrepo · docs · stateMODELproposes a tool callname + argumentsproposeHARNESSpolicy · budget · scopeallow / denydeny → propose againallowEXECUTORmcp / internal toolruns for realOBSERVATIONresult · error · costfed back into contextobservationTRACEappend-onlyevery edge is one log line:tool, arguments, time, tokens
the path of one actiondenied by policytrace written · observed

The 200Lab story

From real projects to real classrooms

The 200Lab story began in 2007, when founder Việt Trần, with more than 15 years on real-world projects, saw a wide gap between what businesses need and what developers can deliver.

He watched projects that “worked” but stood on weak foundations, and developers who were strong technically yet struggled to design a system properly. He set out to build a different kind of training: one where lessons come from the constraints of real systems, not from examples staged for a classroom.

In the AI era that gap has taken a new shape: everyone can reach AI, but very few bring it into their work in a disciplined, measurable way. That is why every 200Lab program today aims at one goal: helping learners apply AI better to their own work.

  • Foundations first, tools secondSystems thinking and sound architecture are the root. AI only multiplies your strength once the foundation is solid.
  • AI in real workHarness, skill, MCP and workflow, with AI agents running on your own problems, toward one clear goal: applying AI better to the work you already do.
  • Mentors beside youPeople who have walked the road review and challenge every step, so the way you use AI matures along with the way you design systems.
Portrait of Mentor Việt Trần.
Việt TrầnFounder · Mentor 200Lab · Solution & Software Architect15+ years of real-world projects

Our Mentors

Real experience, shared openly

Senior Engineers, Team Leads, and Architects with hands-on experience.

Portrait of Mentor Việt Trần.

Việt Trần

Solution & Software Architect

Sendo logo.200Lab logo.
Portrait of Mentor Thịnh Lê.

Thịnh Lê

System Reliability Engineer · Senior DevOps Engineer

NAB logo.Baemin logo.Sendo logo.
Portrait of Mentor Tiến Lưu.

Tiến Lưu

Frontend Engineer · Fullstack Developer

200Lab logo.Bixso logo.Food Connection logo.
Portrait of Mentor Nga Vũ.

Nga Vũ

Data Engineer · Data Product Owner

200Lab logo.Tiki logo.FPT logo.
Portrait of Mentor Sơn Đào.

Sơn Đào

Software Manager · Flutter Developer

FPT logo.Tinhte logo.Seedcom logo.
Portrait of Mentor Huy Trần.

Huy Trần

Frontend Engineer

200Lab logo.
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From the classroom

What learners say after studying at 200Lab

Not generic praise: this is how learners describe what they now understand better and have put to work.

3,000+learners have chosen 200Lab programs.

  • “Mình không còn áp một mẫu kiến trúc cho mọi bài toán, mà biết cân nhắc Event-Driven, CQRS, Monolith hay Microservices theo đúng bối cảnh.”

    Hoàng Minh QuânSenior Backend Developer at Tan CangSoftware Architect
  • “Mình học được cách tiếp cận vấn đề có hệ thống, từ phân tích yêu cầu đến thiết kế chi tiết, thay vì nhảy ngay vào code như trước. Nhờ vậy mình đã apply thành công vào vị trí mới.”

    Phạm Văn ĐứcSoftware Architect
  • “System Design được hệ thống lại rõ ràng qua thực hành và case study; Mentor cũng hỗ trợ kỹ cả những câu hỏi phát sinh ngoài giờ.”

    Nguyễn Minh TuấnSenior Backend Developer at Tan CangSoftware Architect
  • Golang Backend learners at a 200Lab Offline meetup.
    Offline meetup of the Golang class
  • “Vừa ra trường, mình học được cách implement event-driven với message queue và thiết kế authentication với JWT theo các scenario thực tế, những thứ ở trường mình chưa biết cách làm.”

    Vũ Quang HiếuJunior Backend DeveloperTypeScript/Express
  • “Mình học để hiểu quy trình DevOps và làm việc tốt hơn với team vận hành; kết quả là tự thiết lập được CI/CD cơ bản và quản lý EC2, RDS, S3 trên AWS.”

    Vũ Hoàng NamBackend DeveloperAWS
  • A full 200Lab Offline System Design workshop.
    Workshops after the course
  • “Sau ba năm làm PHP, mình nắm Go nhanh hơn nhờ phần goroutine dễ hiểu, code demo đầy đủ và tài liệu có thể xem lại khi cần.”

    Nguyễn Chí TuệBackend DeveloperGolang
  • “Từ những tutorial React rời rạc, mình xây được nền tảng có hệ thống; Hooks và quản lý state được giải thích chi tiết, sát với công việc.”

    Đỗ Thanh TùngBackend DeveloperFrontend React
  • Learners working on laptops during a Q&A session at 200Lab.
    In-depth Q&A sessions
  • “Sau 3 năm làm Frontend React, giờ mình tự xây được cả frontend lẫn backend cho dự án cá nhân, không còn phụ thuộc vào backend developer.”

    Bùi Quốc AnhFrontend DeveloperTypeScript/Express

And many more journeys are under way

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Named feedback in the learners' own words (Vietnamese), edited down from what they shared with 200Lab.

Before you start

Frequently asked questions

I have never worked with AI agents. Can I still learn?

Yes. Each group of learners has its own suggested path under Who it is for; if you do not write code, start with the free course “Understand data formats to communicate well with AI”.

How do I pay?

You pay at checkout by bank transfer with a VietQR code, or with your PayPal account (charged in USD, PayPal's fee included).

How soon can I start after paying?

Transfers are matched automatically, so the course usually appears in your learning space within a few minutes. Keep the transfer description exactly as the checkout shows it.

What if the QR code expires?

An order stays open for 30 minutes. After that, open the order again and create a new QR code; you do not have to start over.

How long do I keep access?

Your access term follows the package you buy and is stated right under the price on each course page.

Do I get course updates after buying?

Yes. When lessons are added or revised you receive those changes for as long as your access lasts, at no extra cost.

Can I learn on my phone?

Yes. 200Lab runs in the browser on a computer and on a phone, with no app to install. Progress is saved to your account, so you can switch devices and continue.

Do I get a Certificate when I finish?

Yes. Completing the course earns a Certificate with a verification code. Anyone can check that code on 200Lab's Certificate verification page if you choose to make it public.

Can I try the course before buying?

Yes. Every course has trial lessons: open them with the trial button on the course page, and they are marked in the curriculum.

Can I get a refund after buying?

Recorded courses are not refunded once access has been granted, which is why every course has free trial lessons to preview first. 200Lab refunds only when a technical fault stops you from learning and 200Lab does not fix it within 3 working days. Mistaken purchases are not refunded; if you bought the wrong item, contact 200Lab as soon as possible (within 12 hours) so it can be resolved appropriately. Live courses are fully refunded if you ask at least 24 hours before the first session. Details are in the Refunds section of the Terms.

Where do I get support?

Message the 200Lab Fanpage or email edu@200lab.io.

Start with the foundations

Learn with purpose, prove it with real products.

Create an account and try the opening lessons of every course for free.
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