Add Box support to rclone sandbox providers (#146)

Author: alfozan

docs/sandbox/clients.md

@@ -110,9 +110,9 @@ Hosted sandbox clients expose provider-specific mount strategies. Choose the bac
 | `ModalSandboxClient` | Supports Modal cloud bucket mounts with `ModalCloudBucketMountStrategy` on `S3Mount`, `R2Mount`, and HMAC-authenticated `GCSMount`. You can use inline credentials or a named Modal Secret. |
 | `CloudflareSandboxClient` | Supports Cloudflare bucket mounts with `CloudflareBucketMountStrategy` on `S3Mount`, `R2Mount`, and HMAC-authenticated `GCSMount`. |
 | `BlaxelSandboxClient` | Supports cloud bucket mounts with `BlaxelCloudBucketMountStrategy` on `S3Mount`, `R2Mount`, and `GCSMount`. Also supports persistent Blaxel Drives with `BlaxelDriveMount` and `BlaxelDriveMountStrategy` from `agents.extensions.sandbox.blaxel`. |
-| `DaytonaSandboxClient` | Supports cloud bucket mounts with `DaytonaCloudBucketMountStrategy`; use it with `S3Mount`, `GCSMount`, `R2Mount`, and `AzureBlobMount`. |
-| `E2BSandboxClient` | Supports cloud bucket mounts with `E2BCloudBucketMountStrategy`; use it with `S3Mount`, `GCSMount`, `R2Mount`, and `AzureBlobMount`. |
-| `RunloopSandboxClient` | Supports cloud bucket mounts with `RunloopCloudBucketMountStrategy`; use it with `S3Mount`, `GCSMount`, `R2Mount`, and `AzureBlobMount`. |
+| `DaytonaSandboxClient` | Supports rclone-backed cloud storage mounts with `DaytonaCloudBucketMountStrategy`; use it with `S3Mount`, `GCSMount`, `R2Mount`, `AzureBlobMount`, and `BoxMount`. |
+| `E2BSandboxClient` | Supports rclone-backed cloud storage mounts with `E2BCloudBucketMountStrategy`; use it with `S3Mount`, `GCSMount`, `R2Mount`, `AzureBlobMount`, and `BoxMount`. |
+| `RunloopSandboxClient` | Supports rclone-backed cloud storage mounts with `RunloopCloudBucketMountStrategy`; use it with `S3Mount`, `GCSMount`, `R2Mount`, `AzureBlobMount`, and `BoxMount`. |
 | `VercelSandboxClient` | No hosted-specific mount strategy is currently exposed. Use manifest files, repos, or other workspace inputs instead. |
 
 </div>
@@ -121,16 +121,16 @@ The table below summarizes which remote storage entries each backend can mount d
 
 <div class="sandbox-nowrap-first-column-table" markdown="1">
 
-| Backend | AWS S3 | Cloudflare R2 | GCS | Azure Blob Storage | S3 Files |
-| --- | --- | --- | --- | --- | --- |
-| Docker | ✓ | ✓ | ✓ | ✓ | ✓ |
-| `ModalSandboxClient` | ✓ | ✓ | ✓ | - | - |
-| `CloudflareSandboxClient` | ✓ | ✓ | ✓ | - | - |
-| `BlaxelSandboxClient` | ✓ | ✓ | ✓ | - | - |
-| `DaytonaSandboxClient` | ✓ | ✓ | ✓ | ✓ | - |
-| `E2BSandboxClient` | ✓ | ✓ | ✓ | ✓ | - |
-| `RunloopSandboxClient` | ✓ | ✓ | ✓ | ✓ | - |
-| `VercelSandboxClient` | - | - | - | - | - |
+| Backend | AWS S3 | Cloudflare R2 | GCS | Azure Blob Storage | Box | S3 Files |
+| --- | --- | --- | --- | --- | --- | --- |
+| Docker | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
+| `ModalSandboxClient` | ✓ | ✓ | ✓ | - | - | - |
+| `CloudflareSandboxClient` | ✓ | ✓ | ✓ | - | - | - |
+| `BlaxelSandboxClient` | ✓ | ✓ | ✓ | - | - | - |
+| `DaytonaSandboxClient` | ✓ | ✓ | ✓ | ✓ | ✓ | - |
+| `E2BSandboxClient` | ✓ | ✓ | ✓ | ✓ | ✓ | - |
+| `RunloopSandboxClient` | ✓ | ✓ | ✓ | ✓ | ✓ | - |
+| `VercelSandboxClient` | - | - | - | - | - | - |
 
 </div>
 

src/agents/extensions/sandbox/daytona/mounts.py

@@ -4,7 +4,7 @@
 :class:`InContainerMountStrategy` that ensures ``rclone`` is installed inside
 the sandbox before delegating to :class:`RcloneMountPattern`.
 
-Supports S3, R2, GCS, and Azure Blob mounts through a single code path.
+Supports S3, R2, GCS, Azure Blob, and Box mounts through a single code path.
 """
 
 from __future__ import annotations
@@ -161,12 +161,12 @@ def _assert_daytona_session(session: BaseSandboxSession) -> None:
 
 
 class DaytonaCloudBucketMountStrategy(MountStrategyBase):
-    """Mount cloud buckets in Daytona sandboxes via rclone.
+    """Mount rclone-backed cloud storage in Daytona sandboxes.
 
     Wraps :class:`InContainerMountStrategy` with automatic ``rclone``
-    provisioning.  Use with any provider mount (``S3Mount``, ``R2Mount``,
-    ``GCSMount``, ``AzureBlobMount``) and let the generic framework handle
-    config generation and mount execution.
+    provisioning.  Use with any rclone-backed provider mount (``S3Mount``,
+    ``R2Mount``, ``GCSMount``, ``AzureBlobMount``, ``BoxMount``) and let the
+    generic framework handle config generation and mount execution.
 
     Usage::
 

src/agents/extensions/sandbox/e2b/mounts.py

@@ -126,7 +126,7 @@ def _assert_e2b_session(session: BaseSandboxSession) -> None:
 
 
 class E2BCloudBucketMountStrategy(MountStrategyBase):
-    """Mount cloud buckets in E2B sandboxes via rclone."""
+    """Mount rclone-backed cloud storage in E2B sandboxes."""
 
     type: Literal["e2b_cloud_bucket"] = "e2b_cloud_bucket"
     pattern: RcloneMountPattern = RcloneMountPattern(mode="fuse")

src/agents/extensions/sandbox/runloop/mounts.py

@@ -171,7 +171,7 @@ def _assert_runloop_session(session: BaseSandboxSession) -> None:
 
 
 class RunloopCloudBucketMountStrategy(MountStrategyBase):
-    """Mount cloud buckets in Runloop sandboxes via rclone."""
+    """Mount rclone-backed cloud storage in Runloop sandboxes."""
 
     type: Literal["runloop_cloud_bucket"] = "runloop_cloud_bucket"
     pattern: RcloneMountPattern = RcloneMountPattern(mode="fuse")