A lightweight note-taking API built with FastAPI, designed for practicing full CRUD operations, in-memory data handling, and schema-driven validation. Notes support Markdown content, optional tags, and dynamic querying via search and pagination.

This API allows you to create, retrieve, update, delete, and search notes. Responses include Markdown-rendered content and support filtering and pagination for flexibility.

Description: Retrieve all notes with optional search, tag filtering, and pagination.

Query Parameters:

Response: 200 OK Returns a list of notes with Markdown-rendered content in the content field.

Description: Retrieve a single note by its ID.

Path Parameter:

Response: 200 OK Returns the full note data. Error: 404 Not Found if the note does not exist.

Description: Create a new note.

Request Body: (Uses NoteCreate schema)

{
  "title": "Meeting notes",
  "content": "Discuss project updates",
  "tags": ["work", "personal"]
}

Response: 201 Created Returns the created note with a UUID and timestamp. Markdown is rendered into HTML in the content field.

Description: Update an existing note by ID.

Path Parameter:

Request Body: (Partial update using NoteUpdate schema)

{
  "title": "Updated title",
  "tags": ["final", "review"]
}

Response: 200 OK Returns the updated note. Error: 404 Not Found if the note does not exist.

Description: Delete a note by ID.

Path Parameter:

Response: 200 OK Returns the deleted note. Error: 404 Not Found if the note does not exist.

• All notes include a unique id, created_at timestamp, and optional tags.
• content is automatically converted from Markdown to HTML before being returned.
• Data is stored in an in-memory list (notes_db) — no external database is used.
• Built for practice, learning, and rapid prototyping with FastAPI.