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

# Public reference

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


## API Docs

- Public reference [Retrieve the certificates that are related via a multi jurisdictional certificate.](https://avalara.ferndocs.com/api-reference/ecm/public-reference/list-all-certificate-multis.md)
- Public reference [Retrieve a country.](https://avalara.ferndocs.com/api-reference/ecm/public-reference/retrieve-country.md)

## OpenAPI Specification

The raw OpenAPI 3.1 specification for this API is available at:
- [OpenAPI JSON](https://avalara.ferndocs.com/openapi.json)
- [OpenAPI YAML](https://avalara.ferndocs.com/openapi.yaml)