# CreateCommentRequest
## Properties
**project_id** | **String** | The id of the project to attach the comment to. |
**object_type** | **String** | The type of the object to attach the comment to (trace, observation, session, prompt). |
**object_id** | **String** | The id of the object to attach the comment to. If this does not reference a valid existing object, an error will be thrown. |
**content** | **String** | The content of the comment. May include markdown. Currently limited to 5000 characters. |
**author_user_id** | Option<**String**> | The id of the user who created the comment. Must be a member of the organization that owns the project, otherwise an error will be thrown. | [optional]
**object_start_time** | Option<**chrono::DateTime<chrono::FixedOffset>**> | The start time of the referenced object (for observations, the observation's start time). Optional performance hint - when provided, Langfuse narrows the lookup to validate the reference faster. It only affects speed - an incorrect or omitted value never changes the result. | [optional]
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