For AI agents: a documentation index is available at the root level at /llms.txt. Append /llms.txt to any URL for a page-level index, or .md for the markdown version of any page.
This page is for Documentation, version Integration guides (default).
For other versions, use one of these documentation indexes:
- Integration guides (default): https://avalara.ferndocs.com/docs/integration-guides/llms.txt
- Refactor guides: https://avalara.ferndocs.com/docs/refactor-guides/llms.txt
- Get certified: https://avalara.ferndocs.com/docs/get-certified/llms.txt
- Agent to Agent (A2A): https://avalara.ferndocs.com/docs/agent-to-agent-a2a/llms.txt
- AI use cases: https://avalara.ferndocs.com/docs/ai-use-cases/llms.txt
- API versioning: https://avalara.ferndocs.com/docs/api-versioning/llms.txt
Guide: Brazil Returns (Tax compliance) - English
This first task describes authenticating in Brazil Returns using the API, including the available authentication methods.
