> For clean Markdown of any page, append .md to the page URL. > For a complete documentation index, see https://avalara.ferndocs.com/api-reference/e-invoicing/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 [Returns a list of code lists for a specific country](https://avalara.ferndocs.com/api-reference/e-invoicing/public-reference/get-code-list-list.md) - Public reference [Retrieves a code list by ID for a specific country](https://avalara.ferndocs.com/api-reference/e-invoicing/public-reference/get-code-list.md) - Public reference [Returns the optionality of document fields for different country mandates](https://avalara.ferndocs.com/api-reference/e-invoicing/public-reference/get-data-input-fields.md) - Public reference [List country mandates that are supported by the Avalara E-Invoicing platform](https://avalara.ferndocs.com/api-reference/e-invoicing/public-reference/get-mandates.md) - Public reference [Returns document field information for a country mandate, a selected document type, and its version](https://avalara.ferndocs.com/api-reference/e-invoicing/public-reference/get-mandate-data-input-fields.md) - Public reference [Returns the tax identifier request and response schema for a specific country.](https://avalara.ferndocs.com/api-reference/e-invoicing/public-reference/tax-identifier-schema-by-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)