> ## Documentation Index > Fetch the complete documentation index at: https://openrouter-d02e98a0-mintlify-7021d5f4.mintlify.site/llms.txt > Use this file to discover all available pages before exploring further. # AnthropicCitationCharLocationParam - Python SDK > AnthropicCitationCharLocationParam method reference The Python SDK and docs are currently in beta. Report issues on [GitHub](https://github.com/OpenRouterTeam/python-sdk/issues). ## Fields | Field | Type | Required | Description | | ------------------ | ---------------------------------------------------------------------------------------------------------------------------------------- | -------------------- | ----------- | | `cited_text` | *str* | :heavy\_check\_mark: | N/A | | `document_index` | *int* | :heavy\_check\_mark: | N/A | | `document_title` | *Nullable\[str]* | :heavy\_check\_mark: | N/A | | `end_char_index` | *int* | :heavy\_check\_mark: | N/A | | `start_char_index` | *int* | :heavy\_check\_mark: | N/A | | `type` | [components.AnthropicCitationCharLocationParamType](/client-sdks/python/api-reference/components/anthropiccitationcharlocationparamtype) | :heavy\_check\_mark: | N/A |