> ## Documentation Index
> Fetch the complete documentation index at: https://platform.atlan.com/llms.txt
> Use this file to discover all available pages before exploring further.

> ## Agent Instructions
> To act on Atlan objects, use the Atlan MCP server at https://api.atlan.com/mcp or the atlanai CLI; `atlanai --map json` prints its command map. Run a read-only identity check before any write.
> The docs MCP server at /mcp searches these docs only. It cannot read or change Atlan objects.
> SDK packages: Python `atlanai` (PyPI) and TypeScript `@atlanai/sdk` (npm). Show Python first, then TypeScript.

# Preview an ontology import

> Parse an interchange document without changing ontology drafts or releases.

Use `ontology__get_import_preview` to inspect how a native JSON, RDF, or OWL
document maps into logical ontology resources before making any changes.

* Required inputs: `ontology_id`, `document`, `format`, and `serialization`.
* Optional inputs: `adapter_version`, `profile`, `base_iri`, `session_id`, and
  Gateway's `rationale`.
* Formats: `native_json`, `rdf`, or `owl`.
* Serializations: `json` or `turtle`, subject to the selected format.
* Effect: read only; no draft or release is created or changed.

The response contains deterministic proposed resources and a loss report.
`apply_supported` is false in Phase 1. Review the proposal, write approved
drafts through Registry operations, and publish them through the native
Ontology release API.

The adapter applies bounded parsing and never fetches remote imports. Treat the
input document as untrusted and inspect all reported omissions or
approximations before using the proposal.