Guides
Check companies with official data, step by step.
Practical guides for developers and compliance teams. Every example uses a real record.
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How to verify a French company (SIREN/SIRET) with an API
What SIREN and SIRET are, where the official data comes from, and how to check a company in one call, from an AI agent or with curl.
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Spanish BORME explained: how to check company changes programmatically
What the BORME is, which acts Fuentio reads, why Spain starts on 6 October 2025, and how to read a company's acts from an agent or with curl.