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+# grype-db
+
+Anchore's vulnerability database builder for Grype - transforms upstream vulnerability data into actionable security intelligence.
+
+## Overview
+
+grype-db is a Go-based application that aggregates vulnerability data from multiple upstream sources (NVD, GitHub, Red Hat, etc.) and builds a comprehensive vulnerability database used by Grype vulnerability scanner. It processes various data formats and creates a unified SQLite database with standardized vulnerability information.
+
+## Core Components
+
+### Database Building (`cmd/grype-db/`)
+- `main.go` - CLI entry point with commands: build, pull, package, cache
+- `cli/commands/` - Command implementations for data operations
+- `application/` - Core application logic and configuration
+
+### Data Processing (`pkg/process/`)
+- Processors for different vulnerability sources (NVD, GitHub, OS vendors, etc.)
+- Schema versioning support (v5, v6) for backward compatibility
+- Data transformers for normalizing vulnerability formats
+
+### Provider System (`pkg/provider/`)
+- Interfaces for vulnerability data sources
+- Vunnel integration for upstream data fetching
+- File and SQLite-based data storage
+
+### Database Management (`manager/`)
+- Python-based database management utilities
+- Distribution and validation tooling
+- S3 integration for database publishing
+
+## Key Features
+
+- Multi-source vulnerability aggregation (NVD, GitHub Security Advisories, OS vendors)
+- Schema versioning with backward compatibility
+- Caching system for efficient data updates
+- Database packaging and distribution
+- Validation and testing frameworks
+
+## Usage
+
+```bash
+# Build database from all sources
+grype-db -g
+
+# Build from specific providers
+grype-db -g -p nvd,github
+
+# Pull data only
+grype-db pull -p nvd
+
+# Package for distribution
+grype-db package
+```
+
+The tool requires a GitHub token for accessing GitHub Security Advisories and uses vunnel for upstream data management.