PROTOS AI Agency is a European artificial intelligence company founded in 2021 and based in Thessaloniki, Greece. It develops AI systems that help public organisations and businesses meet European regulatory requirements, including the AI Act, DSA, NIS2, GDPR and ViDA. The agency emphasises compliance by design, human oversight and European digital sovereignty, using European infrastructure, European language models and open-source frameworks.

Its services include automated regulatory monitoring and risk assessment, legal research and document intelligence, multilingual chatbots, cybersecurity tools, speech recognition, and AI for cultural heritage. Its platforms include DOKIMASIA.AI, which supports AI Act compliance, and NOMOKRATIA.AI, a legal research system indexing more than 3.5 million EU legal documents across 27 legal systems. Other projects include speech-to-text technology deployed with Greek public authorities and PalaioScript AI for historical manuscript transcription.

PROTOS reports production deployments with Greek government bodies and coordinates EU-funded research consortia in cybersecurity and legal AI. It is an EU AI Pact signatory, an EU AI Alliance member and the official AI partner of the Holy Community of Mount Athos.