Inside MCPUP Course

Lesson 1

Overview

Mark done

What kind of codebase this is

MCPUP is a small Python CLI application using a feature-oriented package layout. It is not framework-heavy. Most of the code is plain Python plus a few focused libraries.

src/mcpup/
|-- main.py
|-- config/
|-- cli/
`-- clients/

Main implementation ideas

Typer for the CLI surface
Pydantic models for data validation
Rich for terminal output
Adapter pattern for client integrations
Atomic write pattern for safer file updates

Lesson 2

Boot Flow

Mark done

Entry point path

pyproject.toml
  ->
[project.scripts]
  ->
mp = "mcpup.main:app"
  ->
src/mcpup/main.py
  ->
Typer root app

Step through startup

Lesson 3

Folder Tour

Mark done

Repo tree worth memorizing

MP/
|-- pyproject.toml
|-- src/mcpup/
|   |-- main.py
|   |-- config/
|   |-- cli/
|   `-- clients/
`-- tests/
    |-- config/
    |-- cli/
    `-- clients/

Choose an area

Lesson 4

Tech Stack

Mark done

Stack explorer

Lesson 5

Patterns

Mark done

Adapter pattern

Every client adapter exposes the same detect/read/build/write shape, but the file paths and formats differ.

Validation boundary

Pydantic models act like a gate at the edge of config data. Bad shapes are rejected before deeper code uses them.

Atomic write

Both central config and client configs are written through temp files plus replace, which is a solid defensive move.

Flip cards

Lesson 6

Code Hotspots

Mark done

What is used the most?

My blunt read:

If you want to truly understand MCPUP,
memorize these first:

1. config/models.py
2. config/store.py
3. cli/sync.py
4. clients/base.py
5. clients/registry.py

Lesson 7

Tests + Confidence

Mark done

Test area explorer

Important nuance

The local run passed all 52 tests, which is good. But the strongest coverage is for models, config IO, and adapter unit behavior. Full CLI-to-real-client-file sync is lighter.

Lesson 8

Practice + Quiz

Mark done

Mini practice

1. Which file makes the terminal command `mp` work?

2. Which file owns the default path to ~/.mcpup/config.json?

3. Which abstraction keeps all client adapters aligned?

Quick quiz

Answer the quiz and check your score.

Sources

Real Files Behind This Course

pyproject.toml
src/mcpup/main.py
src/mcpup/config/models.py
src/mcpup/config/store.py
src/mcpup/cli/*.py

src/mcpup/clients/*.py
tests/config/*.py
tests/cli/*.py
tests/clients/*.py
uv run pytest -q