# UploadHeaders

<!-- generated from api/graphql/schema.graphql -->

此类型来自当前机器契约；授权和生命周期见 [认证](../authentication.md) 与 [错误和恢复](../errors.md)。

```graphql
type UploadHeaders {
  content_type: String!
  checksum_sha256: String!
  if_none_match: String!
}
```