Our product
jars.lt
Free company search and data API for Lithuania, Latvia, Estonia and the UK: more than 7 million companies and 23 million financial reports from official registries — on the web, through a REST API and an MCP server for AI assistants.
- Years
- 2025 – present
- Platforms
- Web · API · MCP
Task
Company data in the region is split across four registries, each with its own format, update cycle and access rules. Checking a partner, qualifying a lead or enriching a CRM meant visiting each of them separately. jars.lt brings them into one search and one API, updated from the official sources.
Solution
- Search by name, company code or VAT number, regardless of Lithuanian diacritics
- Company profiles with financial statements, VAT status, directors and beneficial owners
- Employee counts and average wages from Sodra for Lithuanian companies
- Road-carrier licence check for Lithuanian and UK companies
- REST API with keys and a TypeScript SDK on npm
- MCP server with OAuth, so ChatGPT and Claude can query the registry directly
Facts
- Companies
- 7.1 M
- Financial reports
- 23.2 M
- Countries
- LT · LV · EE · UK
- Updates
- Daily (LT, LV, EE)
Technology
A Next.js front end and an Express API over MongoDB Atlas with full-text search, with Redis for rate limiting. About eleven ETL workers on AWS EC2 pull the registries on a schedule, and Lambda functions handle payments and PDF documents.
- Next.js
- Node.js
- MongoDB
- AWS
- MCP