> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://avalara.ferndocs.com/docs/integration-guides/brazil-returns/extractor-en/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://avalara.ferndocs.com/_mcp/server.

# Extractor guide (English)

> API solutions for end-to-end tax compliance.

## Docs

- [Before you begin](https://avalara.ferndocs.com/docs/integration-guides/brazil-returns/extractor-en/before-you-begin.md)
- [Authentication](https://avalara.ferndocs.com/docs/integration-guides/brazil-returns/extractor-en/authentication.md)
- [Errors](https://avalara.ferndocs.com/docs/integration-guides/brazil-returns/extractor-en/errors.md)
- [Concepts](https://avalara.ferndocs.com/docs/integration-guides/brazil-returns/extractor-en/concepts.md)
- [Design the user experience](https://avalara.ferndocs.com/docs/integration-guides/brazil-returns/extractor-en/design-the-user-experience.md)
- [Transactions](https://avalara.ferndocs.com/docs/integration-guides/brazil-returns/extractor-en/transactions.md)
- [Functional review](https://avalara.ferndocs.com/docs/integration-guides/brazil-returns/extractor-en/functional-review.md)
- [FAQs](https://avalara.ferndocs.com/docs/integration-guides/brazil-returns/extractor-en/faqs.md)