diff --git a/apps/api/src/routes/admin-workspace-delete.test.ts b/apps/api/src/routes/admin-workspace-delete.test.ts
index a6b54084..ddd7692b 100644
--- a/apps/api/src/routes/admin-workspace-delete.test.ts
+++ b/apps/api/src/routes/admin-workspace-delete.test.ts
@@ -426,12 +426,23 @@ describe("GET /admin/workspaces/:name", () => {
       purgeAt: null,
       selfServe: false,
       plan: null,
+      paidSince: null,
       hasHttpCredentials: false,
     });
     // Unset key policy reads as the permissive default, not as absent.
     expect(body.keyPolicy).toMatchObject({ autoPrefixBareKeys: true, allowedKeyPrefixes: null });
   });
 
+  it("exposes paidSince for a paid workspace", async () => {
+    const { app, env } = appWith({
+      kvRecords: { "ws:acme": { ...RECORD, plan: "pro", paidSince: "2026-01-02T03:04:05.000Z" } },
+    });
+    const res = await app.request(getRequest("acme"), {}, env);
+    expect(res.status).toBe(200);
+    const body = (await res.json()) as { plan: string; paidSince: string | null };
+    expect(body).toMatchObject({ plan: "pro", paidSince: "2026-01-02T03:04:05.000Z" });
+  });
+
   it("reports a soft-deleted workspace with its grace window instead of 404ing", async () => {
     const { app, env } = appWith({ kvRecords: { "ws:acme": RECORD } });
     await app.request(deleteRequest("acme"), {}, env);
diff --git a/apps/api/src/routes/admin.ts b/apps/api/src/routes/admin.ts
index 2e397f37..2e55edee 100644
--- a/apps/api/src/routes/admin.ts
+++ b/apps/api/src/routes/admin.ts
@@ -558,6 +558,10 @@ export const admin = new Hono<{ Bindings: Env }>()
       prefix: raw.prefix ?? null,
       publicBaseUrl: raw.publicBaseUrl ?? null,
       plan: raw.plan ?? null,
+      // Billing lifecycle, mirrored from the cookie-authed admin panel's plan
+      // view so bearer-token operators (ops scripts, CI) see the same
+      // "customer since" answer.
+      paidSince: raw.paidSince ?? null,
       selfServe: raw.selfServe === true,
       createdAt: raw.createdAt ?? null,
       createdByUserId: raw.createdByUserId ?? null,