> ## Documentation Index
> Fetch the complete documentation index at: https://docs.lerian.studio/llms.txt
> Use this file to discover all available pages before exploring further.

# Documentation site: new structure

> Nine tabs, English only, Solutions and Interfaces sections, and API references generated from the OpenAPI specifications.

<Badge stroke icon="calendar-days" iconType="regular">September 5, 2026</Badge> <Badge stroke icon="file-code" iconType="regular">Documentation update</Badge> <Badge color="purple" size="lg" stroke icon="eye" iconType="regular">Review recommended</Badge>

## Affects

***

Everyone who reads docs.lerian.studio. Your links and bookmarks to `/es/` and `/pt/` pages now redirect to the English page.

## What changed

***

* **Nine tabs.** Home, Start Here, Solutions, Products, Brazil Rails, Interfaces, Platform, API Reference, and News.
* **[Solutions](/en/solutions/introduction).** Solutions group the catalog by the problem you solve: core banking, payment rails, reconciliation, loan management, and orchestration.
* **[Brazil Rails](/en/rails/what-are-brazil-rails).** A Brazil rail is Lerian-owned messaging software that connects your institution to BACEN or to a market infrastructure, with no intermediary.
* **[Interfaces](/en/interfaces/introduction).** An interface is the product surface over a rail. Lerian offers its own interfaces (TED Lerian, Pix Lerian) and partner interfaces (Pix JD, Pix BTG, TED JD, Payments BTG).
* **[API Reference](/en/reference/introduction).** Each product's reference renders from that product's OpenAPI specification.
* **English only.** The Spanish and Portuguese trees no longer exist, and their URLs redirect to the English page.
* **Fetcher.** The site no longer has a Fetcher section, and [Matcher Discovery](/en/matcher/integrations/matcher-discovery) documents the capability as Matcher's embedded extraction engine.

## Impact

***

**Classification: Review recommended.**

Existing page addresses keep working, with a redirect where a page moved. Links to Spanish or Portuguese pages open the English page.

## What you need to do

***

No action is required. Update bookmarks that point to `/es/` or `/pt/` pages if you want the English address directly.

## Where to go

***

* [Home](/en/index) — the entry point to the nine tabs.
* [Solutions](/en/solutions/introduction) — the catalog by the problem you solve.
* [Start Here](/en/welcome-to-our-guides) — the guided path through the site.