ebk 0.4.4

A lightweight, extensible tool for managing eBook metadata

ebk

ebk is a powerful eBook metadata management tool with a SQLAlchemy + SQLite database backend. It provides a comprehensive fluent API for programmatic use, a rich Typer-based CLI (with colorized output courtesy of Rich), full-text search with FTS5 indexing, automatic text extraction and chunking for semantic search, hash-based file deduplication, and optional AI-powered features including knowledge graphs and semantic search.

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Table of Contents

• Features
• Installation
• Quick Start
• Configuration
• CLI Usage
  • Database Commands
  • Web Server
  • AI-Powered Features
  • Configuration Management
  • Legacy Commands
• Python API
• Integrations
• Architecture
• Development
• Contributing
• License
• Documentation
• Stay Updated
• Support

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Features

• SQLAlchemy + SQLite Backend: Robust database with normalized schema, proper relationships, and FTS5 full-text search
• Fluent Python API: Comprehensive programmatic interface with method chaining and query builders
• Typer + Rich CLI: A colorized, easy-to-use command-line interface
• Automatic Text Extraction: Extract and index text from PDFs, EPUBs, and plaintext files
  • PyMuPDF (primary) with pypdf fallback for PDFs
  • ebooklib with HTML parsing for EPUBs
  • Automatic chunking (500-word overlapping chunks) for semantic search
• Hash-based Deduplication: SHA256-based file deduplication
  • Same file (same hash) = skipped
  • Same book, different format = added as additional format
  • Hash-prefixed directory storage for scalability
• Advanced Search: Powerful search with field-specific queries and boolean logic
  • Field searches: title:Python, author:Knuth, tag:programming
  • Boolean operators: AND (implicit), OR, NOT/-prefix
  • Comparison filters: rating:>=4, rating:3-5
  • Exact filters: language:en, format:pdf, favorite:true
  • Phrase searches: "machine learning"
  • Fast FTS5-powered full-text search across titles, descriptions, and extracted text
• Import from Multiple Sources:
  • Calibre libraries (reads metadata.opf files)
  • Individual ebook files with auto-metadata extraction
  • Batch import with progress tracking
• Cover Extraction: Automatic cover extraction and thumbnail generation
  • PDFs: First page rendered as image
  • EPUBs: Cover from metadata or naming patterns
• AI-Powered Features (optional):
  • LLM Provider Abstraction: Support for multiple LLM backends (Ollama, OpenAI-compatible APIs)
  • Metadata Enrichment: Auto-generate tags, categories, and enhanced descriptions using LLMs
  • Local & Remote LLM: Connect to local Ollama or remote GPU servers
  • Knowledge Graph: NetworkX-based concept extraction and relationship mapping
  • Semantic Search: Vector embeddings for similarity search (with TF-IDF fallback)
  • Reading Companion: Track reading sessions with timestamps
  • Question Generator: Generate active recall questions
• Web Server Interface:
  • FastAPI-based REST API for library management
  • URL-based navigation with filters, pagination, and sorting
  • Clickable covers and file formats to open books
  • Book details modal with comprehensive metadata display
• Flexible Exports:
  • HTML Export: Self-contained interactive catalog with pagination (50 books/page)
    • Client-side search and filtering
    • URL state tracking for bookmarkable pages
    • Optional file copying with --copy flag (includes covers)
  • Export to ZIP archives
  • Hugo-compatible Markdown with multiple organization options
  • Jinja2 template support for customizable export formats
• Integrations (optional):
  • Streamlit Dashboard: Interactive web interface
  • MCP Server: AI assistant integration
  • Visualizations: Network graphs for analysis

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Installation

Basic Installation

pip install ebk

From Source

git clone https://github.com/queelius/ebk.git
cd ebk
pip install .

With Optional Features

# With Streamlit dashboard
pip install ebk[streamlit]

# With visualization tools
pip install ebk[viz]

# With all optional features
pip install ebk[all]

# For development
pip install ebk[dev]

Note: Requires Python 3.10+

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Quick Start

1. Initialize Configuration

# Create default configuration file at ~/.config/ebk/config.json
ebk config init

# View current configuration
ebk config show

# Set default library path
ebk config set library.default_path ~/my-library

2. Create and Populate Library

# Initialize a new library
ebk init ~/my-library

# Import a single ebook with auto-metadata extraction
ebk import book.pdf ~/my-library

# Import from Calibre library
ebk import-calibre ~/Calibre/Library --output ~/my-library

# Search using full-text search
ebk search "python programming" ~/my-library

# List books with filtering
ebk list ~/my-library --author "Knuth" --limit 20

# Get statistics
ebk stats ~/my-library

3. Launch Web Interface

# Start web server (uses config defaults)
ebk serve ~/my-library

# Custom port and host
ebk serve ~/my-library --port 8080 --host 127.0.0.1

# Auto-open browser
ebk config set server.auto_open_browser true
ebk serve ~/my-library

4. AI-Powered Metadata Enrichment

# Configure LLM provider
ebk config set llm.provider ollama
ebk config set llm.model llama3.2
ebk config set llm.host localhost

# Enrich library metadata using LLM
ebk enrich ~/my-library

# Enrich with all features
ebk enrich ~/my-library --generate-tags --categorize --enhance-descriptions

# Use remote GPU server
ebk enrich ~/my-library --host 192.168.1.100

---

Configuration

ebk uses a centralized configuration system stored at ~/.config/ebk/config.json. This configuration file manages settings for LLM providers, web server, CLI defaults, and library preferences.

Configuration File Structure

{
  "llm": {
    "provider": "ollama",
    "model": "llama3.2",
    "host": "localhost",
    "port": 11434,
    "api_key": null,
    "temperature": 0.7,
    "max_tokens": null
  },
  "server": {
    "host": "0.0.0.0",
    "port": 8000,
    "auto_open_browser": false,
    "page_size": 50
  },
  "cli": {
    "verbose": false,
    "color": true,
    "page_size": 50
  },
  "library": {
    "default_path": null
  }
}

Configuration Management

# Initialize configuration (creates default config file)
ebk config init

# View current configuration
ebk config show

# Edit configuration in your default editor
ebk config edit

# Set specific values
ebk config set llm.provider ollama
ebk config set llm.model mistral
ebk config set server.port 8080
ebk config set library.default_path ~/my-library

# Get specific value
ebk config get llm.model

LLM Provider Configuration

Configure LLM providers for metadata enrichment:

# Local Ollama (default)
ebk config set llm.provider ollama
ebk config set llm.host localhost
ebk config set llm.port 11434
ebk config set llm.model llama3.2

# Remote GPU server
ebk config set llm.host 192.168.1.100

# OpenAI-compatible API (future)
ebk config set llm.provider openai
ebk config set llm.api_key sk-...
ebk config set llm.model gpt-4

CLI Overrides

All commands support CLI arguments that override configuration defaults:

# These override config settings
ebk serve ~/library --port 9000 --host 127.0.0.1
ebk enrich ~/library --host 192.168.1.50 --model mistral

CLI Usage

ebk uses Typer with Rich for a beautiful, colorized CLI experience.

General CLI Structure

ebk --help                 # See all available commands
ebk <command> --help       # See specific command usage
ebk --verbose <command>    # Enable verbose output

Database Commands

Core library management with SQLAlchemy + SQLite backend:

# Initialize library
ebk init ~/my-library

# Import books
ebk import book.pdf ~/my-library
ebk import ~/books/*.epub ~/my-library
ebk import-calibre ~/Calibre/Library --output ~/my-library

# Search with advanced syntax
ebk search "machine learning" ~/my-library              # Plain full-text search
ebk search "title:Python rating:>=4" ~/my-library       # Field-specific with filters
ebk search "author:Knuth format:pdf" ~/my-library       # Multiple criteria
ebk search "tag:programming NOT java" ~/my-library      # Boolean operators
ebk search '"deep learning" language:en' ~/my-library   # Phrase search with filter

# List and filter
ebk list ~/my-library
ebk list ~/my-library --author "Knuth" --language en --limit 20
ebk list ~/my-library --format pdf --rating 4

# Statistics
ebk stats ~/my-library
ebk stats ~/my-library --format json

# Manage reading status
ebk rate ~/my-library <book-id> 5
ebk favorite ~/my-library <book-id>
ebk tag ~/my-library <book-id> --add "must-read" "technical"

# Remove books
ebk purge ~/my-library --rating 1 --confirm

Web Server

Launch FastAPI-based web interface:

# Start server (uses config defaults)
ebk serve ~/my-library

# Custom host and port
ebk serve ~/my-library --host 127.0.0.1 --port 8080

# Auto-open browser
ebk serve ~/my-library --auto-open

# Configure defaults in config
ebk config set server.port 8080
ebk config set server.auto_open_browser true

AI-Powered Features

Enrich metadata using LLMs:

# Basic enrichment (uses config settings)
ebk enrich ~/my-library

# Full enrichment
ebk enrich ~/my-library \
  --generate-tags \
  --categorize \
  --enhance-descriptions \
  --assess-difficulty

# Enrich specific book
ebk enrich ~/my-library --book-id 42

# Use remote GPU server
ebk enrich ~/my-library --host 192.168.1.100 --model mistral

# Dry run (preview changes without saving)
ebk enrich ~/my-library --dry-run

Configuration Management

Manage global configuration:

# Initialize configuration
ebk config init

# View configuration
ebk config show
ebk config show --section llm

# Edit in default editor
ebk config edit

# Set values
ebk config set llm.model llama3.2
ebk config set server.port 8080
ebk config set library.default_path ~/books

# Get values
ebk config get llm.model

Export and Advanced Features

# Export library
ebk export html ~/my-library ~/library.html                    # Self-contained HTML with pagination
ebk export html ~/my-library ~/site/lib.html --copy --base-url /library  # Copy files + covers
ebk export zip ~/my-library ~/backup.zip
ebk export json ~/my-library ~/metadata.json

# Virtual libraries (filtered views)
ebk vlib create ~/my-library "python-books" --subject Python
ebk vlib list ~/my-library

# Notes and annotations
ebk note add ~/my-library <book-id> "Great chapter on algorithms"
ebk note list ~/my-library <book-id>

---

Documentation

Comprehensive documentation is available at: https://queelius.github.io/ebk/

Documentation Contents

• Getting Started

  • Installation
  • Quick Start
  • Configuration Guide

• User Guide

  • CLI Reference
  • Python API
  • LLM Features
  • Web Server
  • Import/Export
  • Search & Query

• Advanced Topics

  • Hugo Export
  • Symlink DAG
  • Recommendations
  • Batch Operations

• Development

  • Architecture
  • Contributing
  • API Reference

---

Python API

ebk provides a comprehensive SQLAlchemy-based API for programmatic library management:

from pathlib import Path
from ebk.library_db import Library

# Open or create a library
lib = Library.open(Path("~/my-library"))

# Import books with automatic metadata extraction
book = lib.add_book(
    Path("book.pdf"),
    metadata={"title": "My Book", "creators": ["Author Name"]},
    extract_text=True,
    extract_cover=True
)

# Fluent query interface
results = (lib.query()
    .filter_by_language("en")
    .filter_by_author("Knuth")
    .filter_by_subject("Algorithms")
    .order_by("title", desc=False)
    .limit(20)
    .all())

# Full-text search (FTS5)
results = lib.search("machine learning", limit=50)

# Get book by ID
book = lib.get_book(42)
print(f"{book.title} by {', '.join([a.name for a in book.authors])}")

# Update reading status
lib.update_reading_status(book.id, "reading", progress=50, rating=4)

# Add tags
lib.add_tags(book.id, ["must-read", "technical"])

# Get statistics
stats = lib.stats()
print(f"Total books: {stats['total_books']}")
print(f"Total authors: {stats['total_authors']}")
print(f"Languages: {', '.join(stats['languages'])}")

# Query with filters
from ebk.db.models import Book, Author
from sqlalchemy import and_

books = lib.session.query(Book).join(Book.authors).filter(
    and_(
        Author.name.like("%Knuth%"),
        Book.language == "en"
    )
).all()

# Always close when done
lib.close()

# Or use context manager
with Library.open(Path("~/my-library")) as lib:
    results = lib.search("Python programming")
    for book in results:
        print(book.title)

AI-Powered Metadata Enrichment

from ebk.ai.llm_providers.ollama import OllamaProvider
from ebk.ai.metadata_enrichment import MetadataEnrichmentService

# Initialize provider (local or remote)
provider = OllamaProvider.remote(
    host="192.168.1.100",
    model="llama3.2"
)

service = MetadataEnrichmentService(provider)

async with provider:
    # Generate tags
    tags = await service.generate_tags(
        title="Introduction to Algorithms",
        authors=["Cormen", "Leiserson"],
        description="Comprehensive algorithms textbook"
    )

    # Categorize
    categories = await service.categorize(
        title="Introduction to Algorithms",
        subjects=["Algorithms", "Data Structures"]
    )

    # Enhance description
    description = await service.enhance_description(
        title="Introduction to Algorithms",
        text_sample="Chapter 1: The Role of Algorithms..."
    )

See the CLAUDE.md file for architectural details and API documentation for complete reference.

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Contributing

Contributions are welcome! Here’s how to get involved:

1. Fork the Repo
2. Create a Branch for your feature or fix
3. Commit & Push your changes
4. Open a Pull Request describing the changes

We appreciate code contributions, bug reports, and doc improvements alike.

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License

Distributed under the MIT License.

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Integrations

ebk follows a modular architecture where the core library remains lightweight, with optional integrations available:

Streamlit Dashboard

pip install ebk[streamlit]
streamlit run ebk/integrations/streamlit/app.py

MCP Server (AI Assistants)

pip install ebk[mcp]
# Configure your AI assistant to use the MCP server

Visualizations

pip install ebk[viz]
# Visualization tools will be available as a separate script
# Documentation coming soon in integrations/viz/

See the Integrations Guide for detailed setup instructions.

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Architecture

ebk is designed with a clean, layered architecture:

1. Core Library (ebk.library): Fluent API for all operations
2. CLI (ebk.cli): Typer-based commands using the fluent API
3. Import/Export (ebk.imports, ebk.exports): Modular format support
4. Integrations (integrations/): Optional add-ons (web UI, AI, viz)

This design ensures the core remains lightweight while supporting powerful extensions.

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Development

# Clone the repository
git clone https://github.com/queelius/ebk.git
cd ebk

# Create virtual environment
make venv

# Install in development mode
make setup

# Run tests
make test

# Check coverage
make coverage

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Stay Updated

• GitHub: https://github.com/queelius/ebk
• Website: https://metafunctor.com

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Support

• Issues: Open an Issue on GitHub
• Contact: [e-mail]

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Happy eBook managing! 📚✨