> For clean Markdown of any page, append .md to the page URL. > For a complete documentation index, see https://zuora.ferndocs.com/developers/api-reference/zuora-api/billing-documents/operations/llms.txt. > For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://zuora.ferndocs.com/_mcp/server. # Operations ## API Docs - Operations [Generate a billing preview](https://zuora.ferndocs.com/developers/api-reference/zuora-api/billing-documents/operations/post-billing-preview.md) - Operations [Invoice and collect](https://zuora.ferndocs.com/developers/api-reference/zuora-api/billing-documents/operations/post-transaction-invoice-payment.md) - Operations [Retrieve an operation job](https://zuora.ferndocs.com/developers/api-reference/zuora-api/billing-documents/operations/get-operation-job.md) - Operations [Export bulk PDF files](https://zuora.ferndocs.com/developers/api-reference/zuora-api/billing-documents/operations/create-bulk-pdf-to-zip-generation.md) - Operations [Retrieve information of a bulk PDF file generation job](https://zuora.ferndocs.com/developers/api-reference/zuora-api/billing-documents/operations/get-bulk-pdf-to-zip-generation.md) ## OpenAPI Specification The raw OpenAPI 3.1 specification for this API is available at: - [OpenAPI JSON](https://zuora.ferndocs.com/openapi.json) - [OpenAPI YAML](https://zuora.ferndocs.com/openapi.yaml)