# UploadDocumentChunk

> Tracon documentation. Tracon is a .NET package family that adds a control
> plane on Microsoft Agent Framework, published as NuGet packages that run
> inside your own ASP.NET Core application.
>
> Page: https://tracon.dev/http-api/schemas/uploaddocumentchunk/
> Summary: OpenAPI request or response schema for UploadDocumentChunk, including required fields, defaults, constraints, and linked nested types.

[← All HTTP schemas](/http-api/schemas/)

A single ready-made chunk in an upload request.

**Shape:** `object`

| Property | Required | Type | Description | Rules |
|---|---|---|---|---|
| `index` | yes | `integer (int32)` | Sequence number within the source. | pattern `^-?(?:0\\|[1-9]\d*)$` |
| `content` | yes | `string` | The chunk's text. | — |
| `embedding` | no | `array` | The chunk's embedding. If empty, the server embeds it; if filled in, it is written as is and returns 400 if it does not match the store's dimension. | — |
| `metadata` | no | `object` | Optional metadata. | — |