# GLEIF LEI API

Category: [Companies](https://free-web-services.com/web-services/open-data/companies/)  
Page: https://free-web-services.com/web-services/open-data/companies/gleif-lei-api.html  
Documentation: https://api.gleif.org/docs

The GLEIF API gives the global register of Legal Entity Identifiers (LEIs): the official name, address, legal form and parent companies of more than two million companies and funds worldwide, for example to check a business partner's legal name and registration. Responses are JSON:API. Free, no key needed.

- API key: Not needed
- Pricing: Free, no key needed.
- From the browser: Yes (CORS)
- Formats: JSON
- Interface: REST, HTTP-GET
- Provider: api.gleif.org
- Last checked: Working on November 7th, 2026

Example request:

```sh
curl 'https://api.gleif.org/api/v1/lei-records?filter[entity.legalName]=Tesco&page[size]=1'
```

The JavaScript works in a web page as well as in Node.js 18 or newer.