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

# Filesystem Sync

> Python runtime sync for /workspace and task system folders

This page is about runtime sync inside a running agent.

That surface is Python-only today. It is not a CLI command and not a TypeScript SDK feature.

## Filesystem Sync

Use the Python ADK module to sync the attached filesystem into `/workspace`:

```python theme={"dark"}
from terminaluse.lib import adk

await adk.filesystem.sync_down(filesystem_id=ctx.task.filesystem_id)

# read and write files in /workspace

await adk.filesystem.sync_up(filesystem_id=ctx.task.filesystem_id)
```

## Task System Folders

Terminal Use also maintains task-scoped system folders for supported runtimes:

* `dot_claude` mounted at `/root/.claude`
* `dot_codex` mounted at `/root/.codex`

```python theme={"dark"}
await adk.task.sync_down_system_folder(
    task_id=ctx.task.id,
    folder_type="dot_claude",
)

await adk.task.sync_up_system_folder(
    task_id=ctx.task.id,
    folder_type="dot_claude",
)
```

If you omit `folder_type`, the task module syncs all supported system folders.

## What Sync Does

* `sync_down` compares remote and local checksums, then fetches and extracts only when needed
* `sync_up` creates a new archive and pushes changes back when needed
* filesystem sync and system-folder sync are both used by the runtime around `on_create` and `on_event`
* `on_cancel` is not wrapped in the automatic sync path, so do not rely on cancel-time workspace writes being persisted

## Important Boundary

Do not use `get_upload_url` or `get_download_url` as if they were per-file APIs inside your agent code. Those endpoints are for whole-filesystem archive transfers.

Use:

* `adk.filesystem.sync_down` / `sync_up` for runtime workspace sync
* `uploadFile` or `downloadFile` for one-file app-side operations

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