diff --git a/src/agents/sandbox/backend.ts b/src/agents/sandbox/backend.ts
index 8bad8a854116..b29db432844e 100644
--- a/src/agents/sandbox/backend.ts
+++ b/src/agents/sandbox/backend.ts
@@ -1,6 +1,6 @@
 import type { OpenClawConfig } from "../../config/config.js";
 import { normalizeOptionalLowercaseString } from "../../shared/string-coerce.js";
-import type { SandboxFsBridge } from "./fs-bridge.js";
+import type { SandboxFsBridge } from "./fs-bridge.types.js";
 import type { SandboxRegistryEntry } from "./registry.js";
 import type { SandboxConfig, SandboxContext } from "./types.js";
 
diff --git a/src/agents/sandbox/fs-bridge.ts b/src/agents/sandbox/fs-bridge.ts
index b03b415ba89c..7a06bd69856f 100644
--- a/src/agents/sandbox/fs-bridge.ts
+++ b/src/agents/sandbox/fs-bridge.ts
@@ -10,6 +10,7 @@ import {
 } from "./fs-bridge-mutation-helper.js";
 import { SandboxFsPathGuard } from "./fs-bridge-path-safety.js";
 import { buildStatPlan, type SandboxFsCommandPlan } from "./fs-bridge-shell-command-plans.js";
+import type { SandboxFsBridge, SandboxFsStat, SandboxResolvedPath } from "./fs-bridge.types.js";
 import {
   buildSandboxFsMounts,
   resolveSandboxFsPathWithMounts,
@@ -24,44 +25,7 @@ type RunCommandOptions = {
   signal?: AbortSignal;
 };
 
-export type SandboxResolvedPath = {
-  hostPath?: string;
-  relativePath: string;
-  containerPath: string;
-};
-
-export type SandboxFsStat = {
-  type: "file" | "directory" | "other";
-  size: number;
-  mtimeMs: number;
-};
-
-export type SandboxFsBridge = {
-  resolvePath(params: { filePath: string; cwd?: string }): SandboxResolvedPath;
-  readFile(params: { filePath: string; cwd?: string; signal?: AbortSignal }): Promise<Buffer>;
-  writeFile(params: {
-    filePath: string;
-    cwd?: string;
-    data: Buffer | string;
-    encoding?: BufferEncoding;
-    mkdir?: boolean;
-    signal?: AbortSignal;
-  }): Promise<void>;
-  mkdirp(params: { filePath: string; cwd?: string; signal?: AbortSignal }): Promise<void>;
-  remove(params: {
-    filePath: string;
-    cwd?: string;
-    recursive?: boolean;
-    force?: boolean;
-    signal?: AbortSignal;
-  }): Promise<void>;
-  rename(params: { from: string; to: string; cwd?: string; signal?: AbortSignal }): Promise<void>;
-  stat(params: {
-    filePath: string;
-    cwd?: string;
-    signal?: AbortSignal;
-  }): Promise<SandboxFsStat | null>;
-};
+export type { SandboxFsBridge, SandboxFsStat, SandboxResolvedPath } from "./fs-bridge.types.js";
 
 export function createSandboxFsBridge(params: { sandbox: SandboxContext }): SandboxFsBridge {
   return new SandboxFsBridgeImpl(params.sandbox);
diff --git a/src/agents/sandbox/fs-bridge.types.ts b/src/agents/sandbox/fs-bridge.types.ts
new file mode 100644
index 000000000000..afb31306bee3
--- /dev/null
+++ b/src/agents/sandbox/fs-bridge.types.ts
@@ -0,0 +1,38 @@
+export type SandboxResolvedPath = {
+  hostPath?: string;
+  relativePath: string;
+  containerPath: string;
+};
+
+export type SandboxFsStat = {
+  type: "file" | "directory" | "other";
+  size: number;
+  mtimeMs: number;
+};
+
+export type SandboxFsBridge = {
+  resolvePath(params: { filePath: string; cwd?: string }): SandboxResolvedPath;
+  readFile(params: { filePath: string; cwd?: string; signal?: AbortSignal }): Promise<Buffer>;
+  writeFile(params: {
+    filePath: string;
+    cwd?: string;
+    data: Buffer | string;
+    encoding?: BufferEncoding;
+    mkdir?: boolean;
+    signal?: AbortSignal;
+  }): Promise<void>;
+  mkdirp(params: { filePath: string; cwd?: string; signal?: AbortSignal }): Promise<void>;
+  remove(params: {
+    filePath: string;
+    cwd?: string;
+    recursive?: boolean;
+    force?: boolean;
+    signal?: AbortSignal;
+  }): Promise<void>;
+  rename(params: { from: string; to: string; cwd?: string; signal?: AbortSignal }): Promise<void>;
+  stat(params: {
+    filePath: string;
+    cwd?: string;
+    signal?: AbortSignal;
+  }): Promise<SandboxFsStat | null>;
+};
diff --git a/src/agents/sandbox/remote-fs-bridge.ts b/src/agents/sandbox/remote-fs-bridge.ts
index 6e9ca6a0608c..7ac456547861 100644
--- a/src/agents/sandbox/remote-fs-bridge.ts
+++ b/src/agents/sandbox/remote-fs-bridge.ts
@@ -3,7 +3,7 @@ import { isPathInside } from "../../infra/path-guards.js";
 import type { SandboxBackendCommandParams, SandboxBackendCommandResult } from "./backend.js";
 import { SANDBOX_PINNED_MUTATION_PYTHON } from "./fs-bridge-mutation-helper.js";
 import { createWritableRenameTargetResolver } from "./fs-bridge-rename-targets.js";
-import type { SandboxFsBridge, SandboxFsStat, SandboxResolvedPath } from "./fs-bridge.js";
+import type { SandboxFsBridge, SandboxFsStat, SandboxResolvedPath } from "./fs-bridge.types.js";
 import {
   isPathInsideContainerRoot,
   normalizeContainerPath as normalizeSandboxContainerPath,
diff --git a/src/agents/sandbox/types.ts b/src/agents/sandbox/types.ts
index 482ce6a922e2..1280101442f3 100644
--- a/src/agents/sandbox/types.ts
+++ b/src/agents/sandbox/types.ts
@@ -1,5 +1,5 @@
 import type { SandboxBackendHandle, SandboxBackendId } from "./backend.js";
-import type { SandboxFsBridge } from "./fs-bridge.js";
+import type { SandboxFsBridge } from "./fs-bridge.types.js";
 import type { SandboxDockerConfig } from "./types.docker.js";
 
 export type { SandboxDockerConfig } from "./types.docker.js";