# Organization Identity Data

Top-level catalog category

Slug: organization-identity-data

## Overview

APIs and datasets that provide authoritative structured data for looking up, verifying, or enriching the legal identity and registration details of organizations and companies.

## Products

Showing 1–3 of 3 products. Page 1 of 1.
Sort: AI-native score, highest first.



- [OpenCorporates API](/organizations/opencorporates/products/opencorporates-api/) by OpenCorporates — RESTful API providing structured access to company registration data sourced from official government registers worldwide, returning JSON or XML responses for company search, lookup, and officer queries.
- [Companies House Public Data API](/organizations/companies-house/products/companies-house-public-data-api/) by Companies House — RESTful API for accessing UK company registration data from the official Companies House register. Requires registration of a user account and API key authentication.
- [GLEIF API](/organizations/gleif/products/gleif-api/) by GLEIF — API for looking up Legal Entity Identifier (LEI) reference records and entity ownership relationships. LEI data is published under a Creative Commons CC0 open data license.

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