diff --git a/packages/nx/schemas/nx-schema.json b/packages/nx/schemas/nx-schema.json
index 78fd574277f..312469538fd 100644
--- a/packages/nx/schemas/nx-schema.json
+++ b/packages/nx/schemas/nx-schema.json
@@ -920,6 +920,9 @@
         "cache": {
           "$ref": "#/definitions/targetDefaultsConfig/properties/cache"
         },
+        "sandbox": {
+          "$ref": "#/definitions/targetDefaultsConfig/properties/sandbox"
+        },
         "syncGenerators": {
           "$ref": "#/definitions/targetDefaultsConfig/properties/syncGenerators"
         }
@@ -1046,6 +1049,37 @@
           "type": "boolean",
           "description": "Specifies if the given target should be cacheable"
         },
+        "sandbox": {
+          "type": "object",
+          "description": "Configures observed-IO sandboxing for tasks of this target",
+          "properties": {
+            "...": {
+              "type": "boolean",
+              "const": true,
+              "description": "Merges with the inherited sandbox configuration instead of replacing it. Keys before this token defer to the inherited value; keys after it win."
+            },
+            "enabled": {
+              "type": "boolean",
+              "default": true,
+              "description": "Whether tasks for this target are tracked by the sandbox"
+            },
+            "ignoredReads": {
+              "type": "array",
+              "items": {
+                "type": "string"
+              },
+              "description": "Workspace-relative glob patterns for reads excluded from sandboxing reports"
+            },
+            "ignoredWrites": {
+              "type": "array",
+              "items": {
+                "type": "string"
+              },
+              "description": "Workspace-relative glob patterns for writes excluded from sandboxing reports"
+            }
+          },
+          "additionalProperties": false
+        },
         "syncGenerators": {
           "type": "array",
           "items": {
diff --git a/packages/nx/schemas/project-schema.json b/packages/nx/schemas/project-schema.json
index 07daea57dd9..9f893bddb8a 100644
--- a/packages/nx/schemas/project-schema.json
+++ b/packages/nx/schemas/project-schema.json
@@ -138,6 +138,37 @@
             "type": "boolean",
             "description": "Specifies if the given target should be cacheable"
           },
+          "sandbox": {
+            "type": "object",
+            "description": "Configures observed-IO sandboxing for tasks of this target",
+            "properties": {
+              "...": {
+                "type": "boolean",
+                "const": true,
+                "description": "Merges with the inherited sandbox configuration instead of replacing it. Keys before this token defer to the inherited value; keys after it win."
+              },
+              "enabled": {
+                "type": "boolean",
+                "default": true,
+                "description": "Whether tasks for this target are tracked by the sandbox"
+              },
+              "ignoredReads": {
+                "type": "array",
+                "items": {
+                  "type": "string"
+                },
+                "description": "Workspace-relative glob patterns for reads excluded from sandboxing reports"
+              },
+              "ignoredWrites": {
+                "type": "array",
+                "items": {
+                  "type": "string"
+                },
+                "description": "Workspace-relative glob patterns for writes excluded from sandboxing reports"
+              }
+            },
+            "additionalProperties": false
+          },
           "continuous": {
             "type": "boolean",
             "default": false,
diff --git a/packages/nx/src/config/task-graph.ts b/packages/nx/src/config/task-graph.ts
index edc108c77f2..0ffd03f74fd 100644
--- a/packages/nx/src/config/task-graph.ts
+++ b/packages/nx/src/config/task-graph.ts
@@ -3,4 +3,10 @@
  * `packages/nx/src/native/tasks/types.rs` and exposed to TypeScript via NAPI.
  * This file re-exports them so existing imports keep working.
  */
-export type { Task, TaskGraph, TaskTarget, TaskHashDetails } from '../native';
+export type {
+  Task,
+  TaskGraph,
+  TaskTarget,
+  TaskHashDetails,
+  TaskSandboxConfiguration,
+} from '../native';
diff --git a/packages/nx/src/config/workspace-json-project-json.ts b/packages/nx/src/config/workspace-json-project-json.ts
index 39e93a429d2..11bb76395ee 100644
--- a/packages/nx/src/config/workspace-json-project-json.ts
+++ b/packages/nx/src/config/workspace-json-project-json.ts
@@ -1,4 +1,4 @@
-import type { JsonInput } from '../native';
+import type { JsonInput, TaskSandboxConfiguration } from '../native';
 import type { PackageJson } from '../utils/package-json';
 import type {
   NxJsonConfiguration,
@@ -174,6 +174,14 @@ export interface TargetMetadata {
   };
 }
 
+/**
+ * Configuration for observed-IO sandboxing of a target's tasks.
+ *
+ * The same shape rides on each Task instance (`Task['sandbox']`), so the
+ * type is shared with the native task definition.
+ */
+export type TargetSandboxConfiguration = TaskSandboxConfiguration;
+
 export interface TargetDependencyConfig {
   /**
    * A list of projects that have `target`.
@@ -273,6 +281,11 @@ export interface TargetConfiguration<T = any> {
    */
   cache?: boolean;
 
+  /**
+   * Configures observed-IO sandboxing for tasks of this target.
+   */
+  sandbox?: TargetSandboxConfiguration;
+
   /**
    * Metadata about the target
    */
diff --git a/packages/nx/src/native/index.d.ts b/packages/nx/src/native/index.d.ts
index d5c47373b91..fac22970f00 100644
--- a/packages/nx/src/native/index.d.ts
+++ b/packages/nx/src/native/index.d.ts
@@ -743,6 +743,8 @@ export interface Task {
   parallelism?: boolean
   /** This denotes if the task runs continuously */
   continuous?: boolean
+  /** The target's observed-IO sandbox configuration, if declared */
+  sandbox?: TaskSandboxConfiguration
 }
 
 /** Graph of Tasks to be executed */
@@ -789,6 +791,26 @@ export interface TaskRun {
   end: number
 }
 
+/** Observed-IO sandbox configuration of a task's target */
+export interface TaskSandboxConfiguration {
+  /**
+   * Whether tasks for this target are tracked by the sandbox.
+   * Defaults to true. When false, no IO tracing is reported for the
+   * task, so no sandbox report is produced.
+   */
+  enabled?: boolean
+  /**
+   * Workspace-relative glob patterns for reads that should be excluded
+   * from sandboxing reports.
+   */
+  ignoredReads?: Array<string>
+  /**
+   * Workspace-relative glob patterns for writes that should be excluded
+   * from sandboxing reports.
+   */
+  ignoredWrites?: Array<string>
+}
+
 export declare const enum TaskStatus {
   Success = 0,
   Failure = 1,
diff --git a/packages/nx/src/native/tasks/types.rs b/packages/nx/src/native/tasks/types.rs
index 85648e62514..1fb4c68d657 100644
--- a/packages/nx/src/native/tasks/types.rs
+++ b/packages/nx/src/native/tasks/types.rs
@@ -38,6 +38,24 @@ pub struct Task {
     pub parallelism: Option<bool>,
     /// This denotes if the task runs continuously
     pub continuous: Option<bool>,
+    /// The target's observed-IO sandbox configuration, if declared
+    pub sandbox: Option<TaskSandboxConfiguration>,
+}
+
+/// Observed-IO sandbox configuration of a task's target
+#[napi(object)]
+#[derive(Default, Clone, Debug, PartialEq, Eq)]
+pub struct TaskSandboxConfiguration {
+    /// Whether tasks for this target are tracked by the sandbox.
+    /// Defaults to true. When false, no IO tracing is reported for the
+    /// task, so no sandbox report is produced.
+    pub enabled: Option<bool>,
+    /// Workspace-relative glob patterns for reads that should be excluded
+    /// from sandboxing reports.
+    pub ignored_reads: Option<Vec<String>>,
+    /// Workspace-relative glob patterns for writes that should be excluded
+    /// from sandboxing reports.
+    pub ignored_writes: Option<Vec<String>>,
 }
 
 impl Task {
diff --git a/packages/nx/src/project-graph/utils/project-configuration/target-merging.spec.ts b/packages/nx/src/project-graph/utils/project-configuration/target-merging.spec.ts
index 092c1da2303..0f4c0109c14 100644
--- a/packages/nx/src/project-graph/utils/project-configuration/target-merging.spec.ts
+++ b/packages/nx/src/project-graph/utils/project-configuration/target-merging.spec.ts
@@ -441,6 +441,65 @@ describe('target merging', () => {
       expect(result.cache).not.toBeDefined();
     });
   });
+
+  describe('sandbox', () => {
+    it('should take the base sandbox when the target does not define one', () => {
+      const result = mergeTargetConfigurations(
+        { executor: 'nx:run-commands' },
+        {
+          executor: 'nx:run-commands',
+          sandbox: { enabled: false, ignoredReads: ['tmp/**'] },
+        }
+      );
+      expect(result.sandbox).toEqual({
+        enabled: false,
+        ignoredReads: ['tmp/**'],
+      });
+    });
+
+    it('should replace the base sandbox wholesale when the target defines one', () => {
+      const result = mergeTargetConfigurations(
+        {
+          executor: 'nx:run-commands',
+          sandbox: { ignoredWrites: ['scratch/**'] },
+        },
+        {
+          executor: 'nx:run-commands',
+          sandbox: { enabled: false, ignoredReads: ['tmp/**'] },
+        }
+      );
+      expect(result.sandbox).toEqual({ ignoredWrites: ['scratch/**'] });
+    });
+
+    it('should shallow-merge with the base sandbox via the spread token', () => {
+      const result = mergeTargetConfigurations(
+        {
+          executor: 'nx:run-commands',
+          sandbox: {
+            '...': true,
+            ignoredWrites: ['scratch/**'],
+          } as any,
+        },
+        {
+          executor: 'nx:run-commands',
+          sandbox: { enabled: false, ignoredReads: ['tmp/**'] },
+        }
+      );
+      expect(result.sandbox).toEqual({
+        enabled: false,
+        ignoredReads: ['tmp/**'],
+        ignoredWrites: ['scratch/**'],
+      });
+    });
+
+    it('should not be merged for incompatible targets', () => {
+      const result = mergeTargetConfigurations(
+        { executor: 'foo' },
+        { executor: 'bar', sandbox: { enabled: false } }
+      );
+      expect(result.sandbox).not.toBeDefined();
+    });
+  });
 });
 
 describe('spread syntax in mergeTargetConfigurations', () => {
diff --git a/packages/nx/src/tasks-runner/create-task-graph.spec.ts b/packages/nx/src/tasks-runner/create-task-graph.spec.ts
index 5f4d12267a5..ab2bb58d3db 100644
--- a/packages/nx/src/tasks-runner/create-task-graph.spec.ts
+++ b/packages/nx/src/tasks-runner/create-task-graph.spec.ts
@@ -183,6 +183,30 @@ describe('createTaskGraph', () => {
     });
   });
 
+  it('should copy the target sandbox configuration onto the task', () => {
+    projectGraph.nodes['app1'].data.targets['test'].sandbox = {
+      enabled: false,
+      ignoredReads: ['tmp/**'],
+      ignoredWrites: ['scratch/**'],
+    };
+
+    const taskGraph = createTaskGraph(
+      projectGraph,
+      {},
+      ['app1', 'lib1'],
+      ['test'],
+      undefined,
+      {}
+    );
+
+    expect(taskGraph.tasks['app1:test'].sandbox).toEqual({
+      enabled: false,
+      ignoredReads: ['tmp/**'],
+      ignoredWrites: ['scratch/**'],
+    });
+    expect(taskGraph.tasks['lib1:test'].sandbox).toBeUndefined();
+  });
+
   it('should return tasks with outputs', () => {
     projectGraph.nodes.app1.data.targets.test.outputs = [
       '{workspaceRoot}/dist/app1',
diff --git a/packages/nx/src/tasks-runner/create-task-graph.ts b/packages/nx/src/tasks-runner/create-task-graph.ts
index fe116baa209..1fa98b29c5d 100644
--- a/packages/nx/src/tasks-runner/create-task-graph.ts
+++ b/packages/nx/src/tasks-runner/create-task-graph.ts
@@ -407,6 +407,7 @@ export class ProcessTasks {
       cache: project.data.targets[target].cache ?? false,
       parallelism: project.data.targets[target].parallelism ?? true,
       continuous: project.data.targets[target].continuous ?? false,
+      sandbox: project.data.targets[target].sandbox,
     };
   }
 
diff --git a/packages/nx/src/tasks-runner/task-io-service.spec.ts b/packages/nx/src/tasks-runner/task-io-service.spec.ts
new file mode 100644
index 00000000000..a8d143a063c
--- /dev/null
+++ b/packages/nx/src/tasks-runner/task-io-service.spec.ts
@@ -0,0 +1,59 @@
+import { getTaskIOService, TaskPidUpdate } from './task-io-service';
+
+describe('TaskIOService sandbox configuration', () => {
+  it('notifies PID subscribers for tasks without a sandbox configuration', () => {
+    const service = getTaskIOService();
+    const updates: TaskPidUpdate[] = [];
+    service.subscribeToTaskPids((update) => updates.push(update));
+
+    service.notifyPidUpdate({ taskId: 'proj:tracked', pid: 100 });
+
+    expect(updates).toEqual([{ taskId: 'proj:tracked', pid: 100 }]);
+  });
+
+  it('suppresses PID updates for tasks whose sandbox is disabled', () => {
+    const service = getTaskIOService();
+    const updates: TaskPidUpdate[] = [];
+    service.subscribeToTaskPids((update) => updates.push(update));
+
+    service.registerTaskSandboxConfiguration('proj:disabled', {
+      enabled: false,
+    });
+    service.notifyPidUpdate({ taskId: 'proj:disabled', pid: 200 });
+    service.notifyPidUpdate({ taskId: 'proj:other', pid: 201 });
+
+    expect(updates).toEqual([{ taskId: 'proj:other', pid: 201 }]);
+    expect(service.isTaskSandboxDisabled('proj:disabled')).toBe(true);
+  });
+
+  it('keeps PID updates for a sandbox configuration without enabled: false', () => {
+    const service = getTaskIOService();
+    const updates: TaskPidUpdate[] = [];
+    service.subscribeToTaskPids((update) => updates.push(update));
+
+    service.registerTaskSandboxConfiguration('proj:ignores-only', {
+      ignoredReads: ['tmp/**'],
+    });
+    service.notifyPidUpdate({ taskId: 'proj:ignores-only', pid: 300 });
+
+    expect(updates).toEqual([{ taskId: 'proj:ignores-only', pid: 300 }]);
+    expect(service.isTaskSandboxDisabled('proj:ignores-only')).toBe(false);
+  });
+
+  it('re-enables PID updates when a task is re-registered as enabled', () => {
+    const service = getTaskIOService();
+    const updates: TaskPidUpdate[] = [];
+    service.subscribeToTaskPids((update) => updates.push(update));
+
+    service.registerTaskSandboxConfiguration('proj:reenabled', {
+      enabled: false,
+    });
+    service.notifyPidUpdate({ taskId: 'proj:reenabled', pid: 400 });
+    service.registerTaskSandboxConfiguration('proj:reenabled', {
+      enabled: true,
+    });
+    service.notifyPidUpdate({ taskId: 'proj:reenabled', pid: 401 });
+
+    expect(updates).toEqual([{ taskId: 'proj:reenabled', pid: 401 }]);
+  });
+});
diff --git a/packages/nx/src/tasks-runner/task-io-service.ts b/packages/nx/src/tasks-runner/task-io-service.ts
index 5ead8ed2409..3d68aff8748 100644
--- a/packages/nx/src/tasks-runner/task-io-service.ts
+++ b/packages/nx/src/tasks-runner/task-io-service.ts
@@ -1,3 +1,4 @@
+import type { TargetSandboxConfiguration } from '../config/workspace-json-project-json';
 import { getProcessMetricsService } from './process-metrics-service';
 
 /**
@@ -50,6 +51,34 @@ class TaskIOService {
   private taskInputCallbacks: TaskInputCallback[] = [];
   private taskOutputsCallbacks: TaskOutputsCallback[] = [];
 
+  /**
+   * Task IDs whose target opted out of sandboxing via
+   * `sandbox: { enabled: false }`. PID updates for these tasks are
+   * suppressed so no IO tracing (and therefore no sandbox report) is
+   * produced for them.
+   */
+  private sandboxDisabledTaskIds = new Set<string>();
+
+  /**
+   * Register the sandbox configuration of a task before it runs.
+   * Only the disabled state is retained; a task without a registered
+   * config is treated as sandbox-enabled.
+   */
+  registerTaskSandboxConfiguration(
+    taskId: string,
+    config: TargetSandboxConfiguration | undefined
+  ): void {
+    if (config?.enabled === false) {
+      this.sandboxDisabledTaskIds.add(taskId);
+    } else {
+      this.sandboxDisabledTaskIds.delete(taskId);
+    }
+  }
+
+  isTaskSandboxDisabled(taskId: string): boolean {
+    return this.sandboxDisabledTaskIds.has(taskId);
+  }
+
   /**
    * Subscribe to task PID updates.
    * Receives notifications when processes are added/removed from tasks.
@@ -131,9 +160,13 @@ class TaskIOService {
 
   /**
    * Registers a PID to a task and notifies subscribers.
+   * No-op for tasks whose target disabled sandboxing.
    * @param update The TaskPidUpdate containing taskId and pid.
    */
   notifyPidUpdate(update: TaskPidUpdate): void {
+    if (this.sandboxDisabledTaskIds.has(update.taskId)) {
+      return;
+    }
     for (const cb of this.pidCallbacks) {
       try {
         cb(update);
diff --git a/packages/nx/src/tasks-runner/task-orchestrator.ts b/packages/nx/src/tasks-runner/task-orchestrator.ts
index 34ebe9bbb20..c5d3307d683 100644
--- a/packages/nx/src/tasks-runner/task-orchestrator.ts
+++ b/packages/nx/src/tasks-runner/task-orchestrator.ts
@@ -59,6 +59,7 @@ import {
   getTaskSpecificEnv,
 } from './task-env';
 import { TaskStatus } from './tasks-runner';
+import { getTaskIOService } from './task-io-service';
 import { Batch, TasksSchedule } from './tasks-schedule';
 import {
   calculateReverseDeps,
@@ -414,6 +415,15 @@ export class TaskOrchestrator {
   // region Processing Scheduled Tasks
   private async processTask(taskId: string): Promise<NodeJS.ProcessEnv> {
     const task = this.taskGraph.tasks[taskId];
+    if (task.sandbox) {
+      // Suppresses PID reporting for tasks whose target opted out of
+      // sandboxing (`sandbox: { enabled: false }`), so no sandbox report is
+      // produced for them. Both run paths await processTask before spawning.
+      getTaskIOService().registerTaskSandboxConfiguration(
+        task.id,
+        task.sandbox
+      );
+    }
     const taskSpecificEnv = getTaskSpecificEnv(task, this.projectGraph);
 
     if (!task.hash) {