Aidenix data guides

Practical guides to free data sources: official registries, filings, and enrichment APIs — endpoints, auth, rate limits, and what each source honestly covers.

Guides

• Free Clearbit alternative — company enrichment from open data — Which free registries and APIs replace each Clearbit enrichment function, what they cover, and where open data honestly falls short.
• Free trademark search API — USPTO and global registers — How to search US and international trademarks by name or owner through free APIs — USPTO full-text search and TMview, with working queries and honest limits.
• SEC EDGAR API — free company filings and financials guide — How to resolve any US public company to its CIK and pull filings, profiles, and XBRL financials from SEC EDGAR without an API key.
• SEC Form D search — track private fundraising for free — How to search SEC Form D filings by company, date, or sector through the free EDGAR full-text API — what a Form D discloses and what it honestly doesn't.
• UK Companies House API — free company registry data guide — How to pull UK company profiles, directors, and beneficial owners from the free Companies House API, with endpoints, auth, and rate limits.
• Free US company registry APIs — state-by-state guide — Which US states offer free business registry APIs, how many records each holds, and how to query them without an API key.

Source cards

• Business Entities in Colorado dataset — free access card — Endpoint, auth, query keys, and limits for the Colorado business registry, as verified in the Aidenix Atlas catalog.
• Connecticut Business Registry — Business Master — free access card — Endpoint, auth, query keys, and limits for the Connecticut business registry, as verified in the Aidenix Atlas catalog.
• GLEIF LEI records API — free access card — Endpoint, auth, query keys, and limits for the global LEI register, as verified in the Aidenix Atlas catalog.
• New York Active Corporations dataset — free access card — Endpoint, auth, query keys, and limits for the NY corporations registry, as verified in the Aidenix Atlas catalog.
• Oregon Active Businesses dataset — free access card — Endpoint, auth, query keys, and limits for the Oregon business registry, as verified in the Aidenix Atlas catalog.
• SEC EDGAR full-text search API — free access card — Endpoint, auth, query keys, and limits for the EDGAR name-to-CIK resolver, as verified in the Aidenix Atlas catalog.
• SEC EDGAR submissions API — free access card — Endpoint, auth, query keys, and limits for the EDGAR issuer-profile endpoint, as verified in the Aidenix Atlas catalog.
• TMview global trademark search API — free access card — Endpoint, auth, query keys, and limits for the TMview multi-register search, as verified in the Aidenix Atlas catalog.
• UK Companies House API — free access card — Endpoint, auth, query keys, and limits for the UK company register API, as verified in the Aidenix Atlas catalog.
• USPTO trademark full-text search API — free access card — Endpoint, auth, query keys, and limits for the USPTO trademark search, as verified in the Aidenix Atlas catalog.