---
title: Ext Protocol
description: Specification of the Ext Protocol
layout: ../../../layouts/MainLayout.astro
---

The Ext Protocol is used by users who want to access a repository anonymously and in read-only.

For now, it is only possible to use the ExtProtocol for fetching an Object by its ID, given also its OverlayID.

### ExtObjectGet

#### Request

```rust
struct ExtObjectGetV0 {
    /// outer overlayId
    overlay: OverlayId,

    /// List of Object IDs to request
    ids: Vec<ObjectId>,

    /// Whether or not to include all files' objects
    include_files: bool,
}
```

All the children blocks of each object will also be sent in the stream of responses.

#### Response

```rust
Vec<Block>
```