About
Arieta Data is the dataset arm of the company behind LexAPI.
Arieta Data is the dataset business of Arieta Labs Ltd, the company behind LexAPI. Arieta Labs Ltd is registered in England & Wales (no. 16629785). LexAPI is a REST API and MCP server over EU and national law; Arieta Data packages the same corpus as licensable datasets.
What we do
Arieta Labs maintains its own mirror of the European Union’s legal corpus (EUR-Lex, the Court of Justice and the Official Journal) and of national legislation from 15 countries, parsed to article level, with a version history kept from first ingestion and a typed citation graph. LexAPI serves that corpus to developers one request at a time, at lex-api.com. Arieta Data delivers it in bulk, as monthly snapshots licensed for AI training, retrieval and evaluation.
How we work
We only ship lanes whose terms permit it. Each lane’s upstream terms are documented with their source, and where a publisher’s licence statement is being re-confirmed, the lane page says so. Every record carries its source and attribution, and what cannot be used for AI, such as UK case law, is excluded and explained on the coverage page. National case law is included, delivered with personal data masked.
We prepare custom cuts and licensed deliveries within 5–6 business days. We reply within one business day.
We do not claim certifications we do not hold, and this site shows no customer logos or testimonials. The numbers on it come from the statistics file of the current snapshot, and the counting method is in each datasheet.
Founder
Nejc Fošnarič is the founder of Arieta Labs Ltd. He builds LexAPI, the EU legal-data API behind this corpus, and Arieta Data, and writes the guides on this site. GitHub · [email protected]
Open source
The LexAPI SDKs and MCP server are open source on GitHub. The company website is arietalabs.co.uk.
Talk to the people who build it.
Tell us your jurisdictions, languages and use case. The free sample downloads today; a custom cut by jurisdiction, language, date range or document type, with the licence agreement, is ready within 5–6 business days.
- We reply within one business day
- Custom cuts in 5–6 business days
- Free sample, no sign-up