diff --git a/lib/sandbox/__tests__/createSandbox.test.ts b/lib/sandbox/__tests__/createSandbox.test.ts
index b80dbc44b..83feae2b7 100644
--- a/lib/sandbox/__tests__/createSandbox.test.ts
+++ b/lib/sandbox/__tests__/createSandbox.test.ts
@@ -1,17 +1,17 @@
 import { describe, it, expect, vi, beforeEach } from "vitest";
 
 import { createSandbox } from "../createSandbox";
-import { Sandbox } from "@vercel/sandbox";
+import { VercelSandbox } from "../vercel";
 
 const mockSandbox = {
   name: "sbx_test123",
-  status: "running",
+  sdkStatus: "running",
   timeout: 1800000,
   createdAt: new Date("2024-01-01T00:00:00Z"),
 };
 
-vi.mock("@vercel/sandbox", () => ({
-  Sandbox: {
+vi.mock("../vercel", () => ({
+  VercelSandbox: {
     create: vi.fn(() => Promise.resolve(mockSandbox)),
   },
 }));
@@ -28,40 +28,42 @@ describe("createSandbox", () => {
     vi.clearAllMocks();
   });
 
-  it("creates sandbox with default configuration when no params provided", async () => {
+  it("creates sandbox with default configuration when no config provided", async () => {
     await createSandbox();
 
-    expect(Sandbox.create).toHaveBeenCalledWith({
-      resources: { vcpus: 4 },
+    expect(VercelSandbox.create).toHaveBeenCalledWith({
+      vcpus: 4,
       timeout: 1800000,
       runtime: "node22",
     });
   });
 
-  it("creates sandbox from snapshot when source is provided", async () => {
-    await createSandbox({ source: { type: "snapshot", snapshotId: "snap_abc123" } });
+  it("restores from snapshot when restoreSnapshotId is provided", async () => {
+    await createSandbox({ restoreSnapshotId: "snap_abc123" });
 
-    expect(Sandbox.create).toHaveBeenCalledWith({
-      source: { type: "snapshot", snapshotId: "snap_abc123" },
+    expect(VercelSandbox.create).toHaveBeenCalledWith({
+      vcpus: 4,
+      runtime: "node22",
       timeout: 1800000,
+      restoreSnapshotId: "snap_abc123",
     });
   });
 
   it("allows overriding default timeout", async () => {
     await createSandbox({ timeout: 300000 });
 
-    expect(Sandbox.create).toHaveBeenCalledWith({
-      resources: { vcpus: 4 },
+    expect(VercelSandbox.create).toHaveBeenCalledWith({
+      vcpus: 4,
       timeout: 300000,
       runtime: "node22",
     });
   });
 
-  it("allows overriding default resources", async () => {
-    await createSandbox({ resources: { vcpus: 2 } });
+  it("allows overriding default vcpus", async () => {
+    await createSandbox({ vcpus: 2 });
 
-    expect(Sandbox.create).toHaveBeenCalledWith({
-      resources: { vcpus: 2 },
+    expect(VercelSandbox.create).toHaveBeenCalledWith({
+      vcpus: 2,
       timeout: 1800000,
       runtime: "node22",
     });
@@ -84,7 +86,9 @@ describe("createSandbox", () => {
       ...mockSandbox,
       stop: vi.fn(),
     };
-    vi.mocked(Sandbox.create).mockResolvedValue(mockSandboxWithStop as unknown as Sandbox);
+    vi.mocked(VercelSandbox.create).mockResolvedValue(
+      mockSandboxWithStop as unknown as VercelSandbox,
+    );
 
     await createSandbox();
 
diff --git a/lib/sandbox/__tests__/createSandboxWithFallback.test.ts b/lib/sandbox/__tests__/createSandboxWithFallback.test.ts
index 3af6d1fed..badc56b51 100644
--- a/lib/sandbox/__tests__/createSandboxWithFallback.test.ts
+++ b/lib/sandbox/__tests__/createSandboxWithFallback.test.ts
@@ -27,7 +27,7 @@ describe("createSandboxWithFallback", () => {
     const result = await createSandboxWithFallback("snap_abc");
 
     expect(mockCreateSandbox).toHaveBeenCalledWith({
-      source: { type: "snapshot", snapshotId: "snap_abc" },
+      restoreSnapshotId: "snap_abc",
     });
     expect(result).toEqual({ ...mockCreateResult, fromSnapshot: true });
   });
diff --git a/lib/sandbox/__tests__/getActiveSandbox.test.ts b/lib/sandbox/__tests__/getActiveSandbox.test.ts
index 0f6ca2e6f..db36ca821 100644
--- a/lib/sandbox/__tests__/getActiveSandbox.test.ts
+++ b/lib/sandbox/__tests__/getActiveSandbox.test.ts
@@ -1,13 +1,13 @@
 import { describe, it, expect, vi, beforeEach } from "vitest";
-import { Sandbox } from "@vercel/sandbox";
+import { VercelSandbox } from "@/lib/sandbox/vercel";
 
 import { getActiveSandbox } from "../getActiveSandbox";
 
 const mockSelectAccountSandboxes = vi.fn();
 
-vi.mock("@vercel/sandbox", () => ({
-  Sandbox: {
-    get: vi.fn(),
+vi.mock("@/lib/sandbox/vercel", () => ({
+  VercelSandbox: {
+    connect: vi.fn(),
   },
 }));
 
@@ -25,17 +25,16 @@ describe("getActiveSandbox", () => {
 
     const mockSandbox = {
       name: "sbx_123",
-      status: "running",
-      runCommand: vi.fn(),
+      sdkStatus: "running",
     };
-    vi.mocked(Sandbox.get).mockResolvedValue(mockSandbox as unknown as Sandbox);
+    vi.mocked(VercelSandbox.connect).mockResolvedValue(mockSandbox as unknown as VercelSandbox);
 
     const result = await getActiveSandbox("acc_1");
 
     expect(mockSelectAccountSandboxes).toHaveBeenCalledWith({
       accountIds: ["acc_1"],
     });
-    expect(Sandbox.get).toHaveBeenCalledWith({ name: "sbx_123" });
+    expect(VercelSandbox.connect).toHaveBeenCalledWith("sbx_123", {});
     expect(result).toBe(mockSandbox);
   });
 
@@ -45,7 +44,7 @@ describe("getActiveSandbox", () => {
     const result = await getActiveSandbox("acc_1");
 
     expect(result).toBeNull();
-    expect(Sandbox.get).not.toHaveBeenCalled();
+    expect(VercelSandbox.connect).not.toHaveBeenCalled();
   });
 
   it("returns null when sandbox is not running", async () => {
@@ -55,21 +54,21 @@ describe("getActiveSandbox", () => {
 
     const mockSandbox = {
       name: "sbx_stopped",
-      status: "stopped",
+      sdkStatus: "stopped",
     };
-    vi.mocked(Sandbox.get).mockResolvedValue(mockSandbox as unknown as Sandbox);
+    vi.mocked(VercelSandbox.connect).mockResolvedValue(mockSandbox as unknown as VercelSandbox);
 
     const result = await getActiveSandbox("acc_1");
 
     expect(result).toBeNull();
   });
 
-  it("returns null when Sandbox.get throws", async () => {
+  it("returns null when VercelSandbox.connect throws", async () => {
     mockSelectAccountSandboxes.mockResolvedValue([
       { sandbox_id: "sbx_expired", account_id: "acc_1" },
     ]);
 
-    vi.mocked(Sandbox.get).mockRejectedValue(new Error("Sandbox not found"));
+    vi.mocked(VercelSandbox.connect).mockRejectedValue(new Error("Sandbox not found"));
 
     const result = await getActiveSandbox("acc_1");
 
diff --git a/lib/sandbox/__tests__/processCreateSandbox.test.ts b/lib/sandbox/__tests__/processCreateSandbox.test.ts
index 160cf287c..789b0a998 100644
--- a/lib/sandbox/__tests__/processCreateSandbox.test.ts
+++ b/lib/sandbox/__tests__/processCreateSandbox.test.ts
@@ -1,5 +1,5 @@
 import { describe, it, expect, vi, beforeEach } from "vitest";
-import type { Sandbox } from "@vercel/sandbox";
+import type { VercelSandbox } from "@/lib/sandbox/vercel";
 
 import { processCreateSandbox } from "../processCreateSandbox";
 import { createSandboxFromSnapshot } from "@/lib/sandbox/createSandboxFromSnapshot";
@@ -15,10 +15,10 @@ vi.mock("@/lib/trigger/triggerPromptSandbox", () => ({
 
 const mockSandbox = {
   name: "sbx_123",
-  status: "running",
+  sdkStatus: "running",
   timeout: 600000,
   createdAt: new Date("2024-01-01T00:00:00.000Z"),
-} as unknown as Sandbox;
+} as unknown as VercelSandbox;
 
 describe("processCreateSandbox", () => {
   beforeEach(() => {
diff --git a/lib/sandbox/createSandbox.ts b/lib/sandbox/createSandbox.ts
index d6c732128..cc813cf98 100644
--- a/lib/sandbox/createSandbox.ts
+++ b/lib/sandbox/createSandbox.ts
@@ -1,61 +1,57 @@
 import ms from "ms";
-import { Sandbox } from "@vercel/sandbox";
+import { VercelSandbox, type VercelSandboxConfig } from "@/lib/sandbox/vercel";
 
 export interface SandboxCreatedResponse {
-  sandboxId: Sandbox["name"];
-  sandboxStatus: Sandbox["status"];
-  timeout: Sandbox["timeout"];
+  sandboxId: VercelSandbox["name"];
+  sandboxStatus: string;
+  timeout: VercelSandbox["timeout"];
   createdAt: string;
 }
 
 export interface SandboxCreateResult {
-  sandbox: Sandbox;
+  sandbox: VercelSandbox;
   response: SandboxCreatedResponse;
 }
 
-/** Extract CreateSandboxParams from Sandbox.create method signature */
-export type CreateSandboxParams = NonNullable<Parameters<typeof Sandbox.create>[0]>;
+/** Parameters for the api-side createSandbox helper. Wraps the abstraction's
+ *  VercelSandboxConfig so callers do not need to import it directly. */
+export type CreateSandboxParams = VercelSandboxConfig;
 
 const DEFAULT_TIMEOUT = ms("30m");
 const DEFAULT_VCPUS = 4;
-const DEFAULT_RUNTIME = "node22";
+const DEFAULT_RUNTIME = "node22" as const;
 
 /**
- * Creates a Vercel Sandbox and returns its info.
+ * Creates a Vercel Sandbox via the open-agents abstraction and returns
+ * its info. The sandbox is left running so subsequent prompts can run
+ * against it.
  *
- * The sandbox is left running so that prompts can be executed via the prompt_sandbox tool.
- * Accepts the same parameters as Sandbox.create from @vercel/sandbox.
+ * Note: VercelSandbox.create applies its own defaults for vcpus and
+ * runtime (vcpus=4, runtime="node22") regardless of source — those
+ * apply to the runtime resources of the new sandbox even when restoring
+ * from a snapshot. We pass our preferred defaults explicitly so api's
+ * intent is documented at the call site.
  *
- * @param params - Sandbox creation parameters (source, timeout, resources, runtime, ports)
- * @returns The sandbox creation response
+ * @param config - VercelSandboxConfig (timeout, vcpus, runtime,
+ *                 restoreSnapshotId, source, ports, env, etc.)
+ * @returns The sandbox creation result (instance + response shape)
  * @throws Error if sandbox creation fails
  */
 export async function createSandbox(
-  params: CreateSandboxParams = {},
+  config: CreateSandboxParams = {},
 ): Promise<SandboxCreateResult> {
-  const hasSnapshotSource =
-    params.source && "type" in params.source && params.source.type === "snapshot";
-
-  // Pass params directly to SDK - it handles all the type variants
-  const sandbox = await Sandbox.create(
-    hasSnapshotSource
-      ? {
-          ...params,
-          timeout: params.timeout ?? DEFAULT_TIMEOUT,
-        }
-      : {
-          resources: { vcpus: DEFAULT_VCPUS },
-          timeout: params.timeout ?? DEFAULT_TIMEOUT,
-          runtime: DEFAULT_RUNTIME,
-          ...params,
-        },
-  );
+  const sandbox = await VercelSandbox.create({
+    vcpus: DEFAULT_VCPUS,
+    runtime: DEFAULT_RUNTIME,
+    timeout: DEFAULT_TIMEOUT,
+    ...config,
+  });
 
   return {
     sandbox,
     response: {
       sandboxId: sandbox.name,
-      sandboxStatus: sandbox.status,
+      sandboxStatus: sandbox.sdkStatus,
       timeout: sandbox.timeout,
       createdAt: sandbox.createdAt.toISOString(),
     },
diff --git a/lib/sandbox/createSandboxFromSnapshot.ts b/lib/sandbox/createSandboxFromSnapshot.ts
index 2dcfb7ef4..b1132a4b6 100644
--- a/lib/sandbox/createSandboxFromSnapshot.ts
+++ b/lib/sandbox/createSandboxFromSnapshot.ts
@@ -1,10 +1,10 @@
-import type { Sandbox } from "@vercel/sandbox";
+import type { VercelSandbox } from "@/lib/sandbox/vercel";
 import { createSandboxWithFallback } from "@/lib/sandbox/createSandboxWithFallback";
 import { getValidSnapshotId } from "@/lib/sandbox/getValidSnapshotId";
 import { insertAccountSandbox } from "@/lib/supabase/account_sandboxes/insertAccountSandbox";
 
 export interface CreateSandboxFromSnapshotResult {
-  sandbox: Sandbox;
+  sandbox: VercelSandbox;
   fromSnapshot: boolean;
 }
 
diff --git a/lib/sandbox/createSandboxWithFallback.ts b/lib/sandbox/createSandboxWithFallback.ts
index 93014ac43..d728485c5 100644
--- a/lib/sandbox/createSandboxWithFallback.ts
+++ b/lib/sandbox/createSandboxWithFallback.ts
@@ -14,7 +14,7 @@ export async function createSandboxWithFallback(
 ): Promise<SandboxWithFallbackResult> {
   if (snapshotId) {
     try {
-      const result = await createSandbox({ source: { type: "snapshot", snapshotId } });
+      const result = await createSandbox({ restoreSnapshotId: snapshotId });
       return { ...result, fromSnapshot: true };
     } catch (error) {
       console.error("Snapshot sandbox creation failed, falling back to fresh sandbox:", error);
diff --git a/lib/sandbox/getActiveSandbox.ts b/lib/sandbox/getActiveSandbox.ts
index f47dec4f6..c0ba2796f 100644
--- a/lib/sandbox/getActiveSandbox.ts
+++ b/lib/sandbox/getActiveSandbox.ts
@@ -1,13 +1,14 @@
-import { Sandbox } from "@vercel/sandbox";
+import { VercelSandbox } from "@/lib/sandbox/vercel";
 import { selectAccountSandboxes } from "@/lib/supabase/account_sandboxes/selectAccountSandboxes";
 
 /**
  * Finds the most recent sandbox for an account and returns it if still running.
+ * Reconnects via the open-agents sandbox abstraction.
  *
  * @param accountId - The account ID to find an active sandbox for
- * @returns The running Sandbox instance, or null if none found
+ * @returns The running VercelSandbox instance, or null if none found
  */
-export async function getActiveSandbox(accountId: string): Promise<Sandbox | null> {
+export async function getActiveSandbox(accountId: string): Promise<VercelSandbox | null> {
   const sandboxes = await selectAccountSandboxes({
     accountIds: [accountId],
   });
@@ -19,9 +20,9 @@ export async function getActiveSandbox(accountId: string): Promise<Sandbox | nul
   const mostRecent = sandboxes[0];
 
   try {
-    const sandbox = await Sandbox.get({ name: mostRecent.sandbox_id });
+    const sandbox = await VercelSandbox.connect(mostRecent.sandbox_id, {});
 
-    if (sandbox.status === "running") {
+    if (sandbox.sdkStatus === "running") {
       return sandbox;
     }
 
diff --git a/lib/sandbox/processCreateSandbox.ts b/lib/sandbox/processCreateSandbox.ts
index 2863c7d7a..e3cd2a71c 100644
--- a/lib/sandbox/processCreateSandbox.ts
+++ b/lib/sandbox/processCreateSandbox.ts
@@ -24,7 +24,7 @@ export async function processCreateSandbox(
 
   const result: SandboxCreatedResponse = {
     sandboxId: sandbox.name,
-    sandboxStatus: sandbox.status,
+    sandboxStatus: sandbox.sdkStatus,
     timeout: sandbox.timeout,
     createdAt: sandbox.createdAt.toISOString(),
   };
diff --git a/lib/sandbox/vercel/sandbox/VercelSandbox.ts b/lib/sandbox/vercel/sandbox/VercelSandbox.ts
index 56e104aee..61db65676 100644
--- a/lib/sandbox/vercel/sandbox/VercelSandbox.ts
+++ b/lib/sandbox/vercel/sandbox/VercelSandbox.ts
@@ -961,6 +961,31 @@ ${hostLine}${portLines}${runtimeEnvLine}`;
     return "ready";
   }
 
+  /**
+   * Get the raw SDK session status (e.g. "running", "pending", "stopped",
+   * "failed", "aborted", "snapshotting"). Distinct from the abstraction's
+   * normalized `status` getter — exposed for callers that need to surface
+   * the exact SDK lifecycle state in HTTP responses or status polling.
+   */
+  get sdkStatus(): string {
+    this.refreshStateFromCurrentSession();
+    return this.session.status;
+  }
+
+  /**
+   * Timestamp when the underlying SDK sandbox was created. Sourced from
+   * the SDK session's createdAt field. The SDK populates this on create
+   * and connect, so it is always defined for any reachable instance —
+   * we throw rather than fabricate a fallback if the contract is broken.
+   */
+  get createdAt(): Date {
+    this.refreshStateFromCurrentSession();
+    if (!this.session.createdAt) {
+      throw new Error("VercelSandbox session is missing createdAt — SDK contract violation");
+    }
+    return this.session.createdAt;
+  }
+
   /**
    * Get the current state for persistence.
    * Returns state that can be passed to `connectSandbox()` to restore this sandbox.