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

# Files and Exports

> File attachments, upload metadata, and chat export workflows.

# Files and Exports

OpenChat supports attachment-aware chats and structured export workflows.

## File Attachments

* Uploads are stored in Convex storage with metadata rows in `fileUploads`.
* Message rows can include attachment arrays with storage IDs and URLs.
* File ownership remains tied to user and chat IDs.

## Export Chat Workflow

Endpoint: `POST /api/workflow/export-chat`

Supports:

* `markdown` export
* `json` export

Behavior:

* Validates same-origin and authenticated user ownership.
* Applies export rate limits.
* Generates export data URI response with filename + byte length.
* Enforces max payload size (`MAX_EXPORT_BYTES`).

## Data Included in Exports

* Chat title and timestamps.
* Ordered messages with role/content.
* Reasoning text if present.
* Attachment metadata and URLs when resolvable.

## Related Background Workflows

* Title generation (`/api/workflow/generate-title`).
* Account deletion workflow (`/api/workflow/delete-account`).
* Data retention cleanup (`/api/workflow/cleanup`).