# CompanyBook.bg > Bulgarian company registry providing comprehensive data on companies and individuals through a public API CompanyBook.bg is a searchable database of Bulgarian companies and people, sourced from the official Bulgarian Trade Register. Access detailed company information including management, ownership, financial data, addresses, and historical changes. ## API Documentation - [Full API Documentation](https://companybook.bg/api-docs): Complete reference for all endpoints, parameters, and response formats - [Full LLMs File](https://companybook.bg/llms-full.txt): Another file like this but will full API examples and request/response bodies and parameters ## Key Features - Search and retrieve Bulgarian companies by UIC (Unique Identification Code) - Access person profiles with company relationships and roles - Query by district, legal form, status, and other filters - Historical tracking of company changes - RESTful JSON API with comprehensive data models ## Main API Endpoints ### Companies - GET /api/companies/:uic - Get company by UIC - GET /api/companies/search - Search companies with filters (name, district, status, legal_form, etc.) - GET /api/companies/documents/:uic - Get company document data (financial statements, AJ and BH documents) - GET /api/companies/:uic/download - Download specific company documents (requires authentication) - GET /api/companies/count - Get total companies count ### People - GET /api/people/:indent - Get person by identifier (EGN/LNCh) - GET /api/people/search - Search people by name - GET /api/people/count - Get total people count ### Unified Search - GET /api/shared/search - Search both companies and people simultaneously ### Relationships - GET /api/relationships/:identifier - Get network graph of ownership and management relationships ## Data Included Companies: Name, UIC, legal form, status, address, contacts, management, ownership, capital info, NKID codes, VAT registration, insolvency/liquidation status People: Name, identifier, affiliated companies, roles (manager, partner, board member, etc.) ## General information - Base API URL: https://api.companybook.bg/api - All endpoints support `with_data=true` parameter for expanded details - Response format: JSON with pagination support via `limit`` - 28 Bulgarian districts supported (Sofia, Plovdiv, Varna, Burgas, etc.) - 18 legal forms (OOD, EOOD, AD, EAD, sole traders, foundations, etc.)