diff --git a/.env.runner-e2e.example b/.env.runner-e2e.example
index 992d56f820a..1e208f879fb 100644
--- a/.env.runner-e2e.example
+++ b/.env.runner-e2e.example
@@ -9,3 +9,6 @@ DAYTONA_API_KEY=
 # Required only for Daytona cells. Use an immutable, anonymously pullable
 # digest from the Runner Full-Stack E2E image job or a locally published image.
 PAPERCLIP_E2E_DAYTONA_IMAGE=ghcr.io/paperclipai/paperclip-daytona-runner@sha256:REPLACE_ME
+# Optional, explicit subscription qualification only. Supply privately at runtime;
+# never commit an actual auth.json payload. API-key profiles do not use this value.
+# GROK_AUTH_JSON=
diff --git a/.github/workflows/runner-full-stack-e2e.yml b/.github/workflows/runner-full-stack-e2e.yml
index 6d7c4ae6255..fcaad860c27 100644
--- a/.github/workflows/runner-full-stack-e2e.yml
+++ b/.github/workflows/runner-full-stack-e2e.yml
@@ -9,6 +9,10 @@ on:
         description: "Branch in paperclipai/paperclip to test; the trusted workflow still runs from master"
         type: string
         required: false
+      max_parallel:
+        description: "Optional lower concurrency for this campaign (cannot exceed the configured limit)"
+        type: string
+        required: false
       all:
         description: "Run the complete paid matrix when no narrower selector is supplied"
         type: boolean
@@ -286,6 +290,7 @@ jobs:
           SELECT_ID: ${{ inputs.id }}
           MAX_PARALLEL: ${{ vars.RUNNER_E2E_MAX_PARALLEL || needs.authorize.outputs.max_parallel_default }}
           MAX_PARALLEL_LIMIT: ${{ needs.authorize.outputs.max_parallel_limit }}
+          REQUESTED_MAX_PARALLEL: ${{ inputs.max_parallel }}
         run: |
           set -euo pipefail
           args=(--matrix-json)
@@ -346,12 +351,20 @@ jobs:
             echo "RUNNER_E2E_MAX_PARALLEL must be an integer from 1 through $MAX_PARALLEL_LIMIT for the selected runner." >&2
             exit 1
           fi
+          if [ -n "${REQUESTED_MAX_PARALLEL:-}" ]; then
+            if ! [[ "$REQUESTED_MAX_PARALLEL" =~ ^[1-9][0-9]{0,2}$ ]] || [ "$REQUESTED_MAX_PARALLEL" -gt "$MAX_PARALLEL" ]; then
+              echo "max_parallel must be an integer from 1 through the configured campaign limit." >&2
+              exit 1
+            fi
+            MAX_PARALLEL="$REQUESTED_MAX_PARALLEL"
+          fi
           echo "max_parallel=$MAX_PARALLEL" >> "$GITHUB_OUTPUT"
 
   daytona_image:
     name: Publish verified Daytona image
     needs: [authorize, target_lock, catalog]
-    runs-on: ubuntu-latest
+    # Keep image builds on the same authorized fleet as campaign execution.
+    runs-on: ${{ needs.authorize.outputs.test_runner }}
     timeout-minutes: 45
     permissions:
       contents: read
@@ -874,6 +887,10 @@ jobs:
         if: matrix.environmentId == 'local' && (matrix.profileId == 'legacy-opencode' || matrix.profileId == 'runner-opencode' || matrix.suiteId == 'openrouter-model-breadth')
         run: node packages/paperclip-runner/scripts/materialize-opencode-binary.mjs
 
+      - name: Install checksum-verified Grok executable
+        if: matrix.environmentId == 'local' && (matrix.profileId == 'runner-acpx-grok' || matrix.profileId == 'runner-acpx-grok-subscription')
+        run: node packages/grok-acp/install.mjs
+
       - name: Download immutable campaign outputs
         if: startsWith(matrix.profileId, 'runner-') || matrix.suiteId == 'openrouter-model-breadth'
         uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8
@@ -1024,7 +1041,7 @@ jobs:
           NODE
 
       - name: Prepare pinned Python artifact oracle image
-        if: matrix.suiteId == 'everyday-workflows' && (matrix.caseId == 'build-revise' || matrix.caseId == 'delegate-feedback' || matrix.caseId == 'agent-review-handoff' || matrix.caseId == 'hire-reuse' || matrix.caseId == 'recover-controller' || matrix.caseId == 'stop-redirect')
+        if: (matrix.suiteId == 'everyday-workflows' || matrix.suiteId == 'grok-qualification' || matrix.suiteId == 'grok-subscription-qualification') && (matrix.caseId == 'build-revise' || matrix.caseId == 'delegate-feedback' || matrix.caseId == 'agent-review-handoff' || matrix.caseId == 'hire-reuse' || matrix.caseId == 'recover-controller' || matrix.caseId == 'stop-redirect')
         run: |
           set -euo pipefail
           oracle_image='python@sha256:9d2e5553305c7c7b0097999bb17187c69b921ccd6bc9d40e4bb5ebe652c00285'
@@ -1038,6 +1055,7 @@ jobs:
           ANTHROPIC_API_KEY: ${{ matrix.credentialName == 'ANTHROPIC_API_KEY' && secrets.ANTHROPIC_API_KEY || '' }}
           OPENROUTER_API_KEY: ${{ matrix.credentialName == 'OPENROUTER_API_KEY' && secrets.OPENROUTER_API_KEY || '' }}
           XAI_API_KEY: ${{ matrix.credentialName == 'XAI_API_KEY' && secrets.XAI_API_KEY || '' }}
+          GROK_AUTH_JSON: ${{ matrix.credentialName == 'GROK_AUTH_JSON' && secrets.GROK_AUTH_JSON || '' }}
           DAYTONA_API_KEY: ${{ matrix.environmentId == 'daytona' && secrets.DAYTONA_API_KEY || '' }}
           PAPERCLIP_E2E_DAYTONA_IMAGE: ${{ needs.daytona_image.outputs.image }}
           PAPERCLIP_RUNNER_REMOTE_PROVIDER_PACK_PATH: ${{ github.workspace }}/packages/paperclip-runner/provider-pack
diff --git a/doc/evals.md b/doc/evals.md
index b1e2ee306cf..7d453e8e665 100644
--- a/doc/evals.md
+++ b/doc/evals.md
@@ -72,6 +72,12 @@ fixture-driven file wait and persisted-plan oracle are documented in the
 [Product E2E guide](../tests/runner-e2e/README.md). It does not qualify the native
 onboarding wizard or change the native API-tool rollout defaults.
 
+The explicit-only `grok-qualification` and `grok-subscription-qualification`
+Product suites exercise Grok Build with API and company subscription
+authentication respectively. Keep their results separate; the subscription
+fixture seeds an explicitly supplied login and does not qualify interactive
+login. See the [Grok fixture contract](../tests/runner-e2e/README.md#grok-build-qualification).
+
 ## Validation ladder
 
 Start with credential-free checks and a catalog listing. For Product E2E:
diff --git a/doc/grok-native-runner.md b/doc/grok-native-runner.md
index 584f149ac26..5fa4282eb13 100644
--- a/doc/grok-native-runner.md
+++ b/doc/grok-native-runner.md
@@ -53,6 +53,13 @@ and continuation after controller restart
 in both environments. Run with `--suite grok-qualification`; it is excluded from
 scheduled `--all`. Use the canonical Product E2E dashboard and Evalbook reports.
 
+The separate `grok-subscription-qualification` suite covers the same workflows
+with the explicit `GROK_AUTH_JSON` fixture credential. It seeds only the disposable
+company's private login home and supplies no API key. It does not exercise the
+interactive sign-in UI. Authentication mode remains part of the profile identity.
+After a subscription upgrade, a fresh `grok login` may be needed if the existing
+login still reports the previous entitlement through ACP.
+
 `packages/paperclip-runner/scripts/grok-native-smoke.mjs` records explicit auth,
 model/binary identity, MCP outcome, durable resume and restrictive permissions.
 Pass `--auth subscription --auth-file /private/path/auth.json --output /private/report.json`
diff --git a/tests/runner-e2e/FIXTURES.md b/tests/runner-e2e/FIXTURES.md
index cedca439ad5..58a30d2930d 100644
--- a/tests/runner-e2e/FIXTURES.md
+++ b/tests/runner-e2e/FIXTURES.md
@@ -46,6 +46,14 @@ Agent `adapterConfig.env` values must be `{type:"secret_ref", secretId,
 version:"latest"}` objects supplied to the factory. A fixture source containing
 a raw secret-looking value is rejected by catalog validation.
 
+The manual Grok subscription profile uses `GROK_AUTH_JSON` as an explicit login
+fixture. It does not put this credential in agent configuration or substitute an
+API key. Setup seeds a new company-scoped Grok home inside the disposable instance
+with mode 0700 and an exclusive mode-0600 auth file. Setup rejects redirected,
+occupied, or nonisolated homes. Production runner discovery and refresh operate on
+that company login; teardown destroys it after the remote environment is removed.
+This fixture tests subscription execution, not the interactive browser login flow.
+
 ## Environments
 
 An `EnvironmentFixture` declares driver/provider, credential requirements,
diff --git a/tests/runner-e2e/README.md b/tests/runner-e2e/README.md
index 4d61852f42d..0293e2c9343 100644
--- a/tests/runner-e2e/README.md
+++ b/tests/runner-e2e/README.md
@@ -1007,7 +1007,13 @@ failure evidence, so a future blank page is distinguishable from a loaded task.
 `runner-acpx-grok` uses native ACPX with Grok Build 1.0.13 and `grok-4.7`.
 Set an explicit `XAI_API_KEY` for this API-key profile. The manual
 `grok-qualification` suite runs the core and restart workflows on local and
-Daytona runtimes. Missing subscription coverage remains a qualification blocker;
+Daytona runtimes. The separate manual `grok-subscription-qualification` suite
+uses `runner-acpx-grok-subscription` and explicit `GROK_AUTH_JSON`. Its fixture
+stages that login in a private, disposable company home; this is credential
+setup, not a test of interactive browser login. The server never inherits the
+JSON secret or an API key from the harness. See [FIXTURES.md](FIXTURES.md) and
+[SECURITY.md](SECURITY.md) for staging, cleanup, and redaction requirements.
+Missing subscription coverage remains a qualification blocker;
 an API-key pass must not be reported as subscription evidence. See
 [`doc/grok-native-runner.md`](../../doc/grok-native-runner.md) for installation,
 credential boundaries and repetition requirements.
diff --git a/tests/runner-e2e/SECURITY.md b/tests/runner-e2e/SECURITY.md
index 57ed632d78f..1e84d6484ed 100644
--- a/tests/runner-e2e/SECURITY.md
+++ b/tests/runner-e2e/SECURITY.md
@@ -63,6 +63,14 @@ rejects mutable tag or branch references.
 
 ## Secrets and protected environments
 
+Explicit Grok subscription campaigns may select `GROK_AUTH_JSON` from the same
+protected paid environment. Deliver it only to that subscription profile's paid
+test step. Prefer a dedicated test-account login and refresh it before a campaign.
+The fixture stores only the selected login in its disposable company home, rejects
+ambient/redirected homes, and removes the login during teardown. Token fragments
+and account identifiers inside its JSON join the evidence redaction set. The
+subscription suite remains manual-only and never falls back to `XAI_API_KEY`.
+
 Create `runner-e2e-paid`, restrict deployments to the default branch, and put
 only `OPENAI_API_KEY`, `ANTHROPIC_API_KEY`, `OPENROUTER_API_KEY`, and
 `DAYTONA_API_KEY` in it. Do not duplicate these credentials as repository- or
diff --git a/tests/runner-e2e/catalog.test.ts b/tests/runner-e2e/catalog.test.ts
index 8fbe7c01426..1198cb045f9 100644
--- a/tests/runner-e2e/catalog.test.ts
+++ b/tests/runner-e2e/catalog.test.ts
@@ -71,10 +71,10 @@ describe("runner E2E catalog", () => {
     expect(localIntegrityTasks).toHaveLength(2);
     expect(openRouterBreadthTasks).toHaveLength(3);
     expect(runnerSuites.map((suite) => suite.expectedMatrixSize)).toEqual([
-      16, 23, 38, 52, 28, 18, 6, 6, 48, 16, 10, 2,
+      16, 16, 23, 38, 52, 28, 18, 6, 6, 48, 16, 10, 2,
     ]);
-    expect(validateRunnerCatalog()).toHaveLength(263);
-    expect(new Set(runnerMatrix.map((entry) => entry.id)).size).toBe(263);
+    expect(validateRunnerCatalog()).toHaveLength(279);
+    expect(new Set(runnerMatrix.map((entry) => entry.id)).size).toBe(279);
     expect(
       runnerMatrix.filter((entry) => entry.suite.id === "core-compatibility"),
     ).toHaveLength(48);
@@ -560,6 +560,21 @@ describe("runner E2E selectors", () => {
     }
   });
 
+  it("keeps subscription qualification separate and never injects an API key", () => {
+    const selected = selectRunnerExecutions(parseRunnerSelectors(["--suite", "grok-subscription-qualification"]));
+    expect(selected).toHaveLength(16);
+    const all = selectRunnerExecutions(parseRunnerSelectors(["--all"]));
+    for (const execution of selected) {
+      expect(all.some(candidate => candidate.id === execution.id)).toBe(false);
+      expect(execution.requiredCredentials).toEqual(execution.environment.id === "daytona"
+        ? ["GROK_AUTH_JSON", "DAYTONA_API_KEY"] : ["GROK_AUTH_JSON"]);
+      expect(execution.profile.buildAgent({
+        environmentId: "env", environmentFixtureId: execution.environment.id,
+        workspacePath: "/tmp/workspace", secretRefs: {}, executionId: "subscription",
+      })).toMatchObject({ adapterConfig: { provider: "acpx", acpxAgent: "grok", env: {} } });
+    }
+  });
+
   it("selects a suite without exploding its environment matrix", () => {
     const selected = selectRunnerExecutions(
       parseRunnerSelectors(["--suite", "openrouter-model-breadth"]),
diff --git a/tests/runner-e2e/catalog.ts b/tests/runner-e2e/catalog.ts
index 70269d88043..20709372ae8 100644
--- a/tests/runner-e2e/catalog.ts
+++ b/tests/runner-e2e/catalog.ts
@@ -170,7 +170,9 @@ function nativeProfile(input: {
       provider: input.provider,
     },
     buildAgent(buildInput) {
-      const credentialRef = requiredSecret(buildInput, input.credential);
+      const credentialRef = input.credential === "GROK_AUTH_JSON"
+        ? null
+        : requiredSecret(buildInput, input.credential);
       const permissionConfig =
         input.provider === "codex"
           ? { codexPermissionMode: "never" }
@@ -184,7 +186,7 @@ function nativeProfile(input: {
         idleTimeoutMs: 300_000,
         ...permissionConfig,
         env: {
-          [input.credential]: credentialRef,
+          ...(credentialRef ? { [input.credential]: credentialRef } : {}),
           // Codex's supported automation credential is CODEX_API_KEY. Keep
           // OPENAI_API_KEY as the operator-facing fixture secret name and bind
           // the same encrypted reference to the runtime-specific alias.
@@ -917,6 +919,24 @@ const everydayProfiles = [
 ].map(productionStoryProfile);
 
 export const runnerSuites: readonly RunnerSuiteFixture[] = [
+  {
+    id: "grok-subscription-qualification", label: "Grok Build Subscription Qualification", manualOnly: true,
+    description: "Explicit company subscription login across Grok browser workflows in local and Daytona environments.",
+    groups: ["native"],
+    profiles: [nativeProfile({
+      id: "runner-acpx-grok-subscription", label: "Grok Build Subscription",
+      provider: "acpx", acpxAgent: "grok",
+      model: QUALIFIED_ACPX_PROFILES.grok.qualificationModel,
+      credential: "GROK_AUTH_JSON",
+    })],
+    environments: [localEnvironment, daytonaWarmEnvironment],
+    tasks: [
+      ...runnerTasks, ...localIntegrityTasks,
+      ...everydayTasks.filter(task => task.id === "build-revise"),
+      ...chatHardeningTasks.filter(task => ["stop-new-resume", "continuity-restart"].includes(task.id)),
+    ], expectedMatrixSize: 16,
+    definitionMetadata: { version: 1, authentication: "company-subscription", binary: "1.0.13", model: "grok-4.7", scheduling: "explicit-only", repetitionsRequired: 3, artifactOracle: "independent-python-contract", stopBoundary: "provider-turn-started" },
+  },
   {
     id: "grok-qualification", label: "Grok Build Qualification", manualOnly: true,
     description: "Grok replies, planning approval, questions, downloadable artifacts, stop/resume and controller restart in local and Daytona environments.",
diff --git a/tests/runner-e2e/grok-subscription-fixture.test.ts b/tests/runner-e2e/grok-subscription-fixture.test.ts
new file mode 100644
index 00000000000..a14d0f693e8
--- /dev/null
+++ b/tests/runner-e2e/grok-subscription-fixture.test.ts
@@ -0,0 +1,54 @@
+import { mkdtemp, mkdir, readFile, realpath, stat, symlink, rm } from "node:fs/promises";
+import { tmpdir } from "node:os";
+import path from "node:path";
+import { afterEach, expect, it } from "vitest";
+import { resolveManagedGrokHomeDir } from "../../packages/adapters/grok-local/src/server/grok-home.js";
+import { stageGrokSubscriptionFixture } from "./grok-subscription-fixture.js";
+import { findSecretLeak, normalizedSecrets, sanitizeJson } from "./redaction.js";
+import { buildPaperclipServerEnvironment } from "./harness-env.js";
+
+const companyId = "11111111-2222-4333-8444-555555555555";
+const raw = JSON.stringify({ [`https://auth.x.ai::${companyId}`]: {
+  key: "fixture-access-credential", refresh_token: "fixture-refresh-credential", email: "fixture@example.invalid",
+} });
+const roots: string[] = [];
+afterEach(async () => { await Promise.all(roots.splice(0).map(root => rm(root, { recursive: true, force: true }))); });
+async function setup() {
+  const root = await realpath(await mkdtemp(path.join(tmpdir(), "grok-fixture-")));
+  roots.push(root);
+  const home = path.join(root, "paperclip-home");
+  await mkdir(home);
+  return { PAPERCLIP_RUNNER_E2E_TEMP_ROOT: root, PAPERCLIP_HOME: home, PAPERCLIP_INSTANCE_ID: "runner-e2e-test" };
+}
+
+it("stages only the explicit company credential privately and cleans refreshed state", async () => {
+  const environment = await setup();
+  const remove = await stageGrokSubscriptionFixture({ raw, companyId, environment });
+  const home = resolveManagedGrokHomeDir(environment, companyId);
+  expect(await readFile(path.join(home, "auth.json"), "utf8")).toBe(raw);
+  expect((await stat(home)).mode & 0o777).toBe(0o700);
+  expect((await stat(path.join(home, "auth.json"))).mode & 0o777).toBe(0o600);
+  await expect(stageGrokSubscriptionFixture({ raw, companyId, environment })).rejects.toThrow();
+  await remove();
+  await expect(stat(home)).rejects.toThrow();
+});
+
+it("refuses malformed credentials and nonisolated or redirected homes", async () => {
+  const environment = await setup();
+  await expect(stageGrokSubscriptionFixture({ raw: "{}", companyId, environment })).rejects.toThrow("malformed");
+  await expect(stageGrokSubscriptionFixture({ raw, companyId: "../outside", environment })).rejects.toThrow("isolated");
+  await expect(stageGrokSubscriptionFixture({ raw, companyId, environment: { ...environment, PAPERCLIP_HOME: tmpdir() } })).rejects.toThrow("outside");
+  const home = resolveManagedGrokHomeDir(environment, companyId);
+  await mkdir(path.dirname(home), { recursive: true });
+  await symlink(tmpdir(), home);
+  await expect(stageGrokSubscriptionFixture({ raw, companyId, environment })).rejects.toThrow("redirected");
+});
+
+it("strips subscription input from the server environment and masks token fragments", () => {
+  const env = buildPaperclipServerEnvironment({ GROK_AUTH_JSON: raw, XAI_API_KEY: "other-key" });
+  expect(env.GROK_AUTH_JSON).toBeUndefined();
+  expect(env.XAI_API_KEY).toBeUndefined();
+  const secrets = normalizedSecrets([raw]);
+  expect(findSecretLeak("fixture-refresh-credential", secrets)).toBeTruthy();
+  expect(sanitizeJson({ message: "fixture-access-credential fixture@example.invalid" }, secrets)).toEqual({ message: "[REDACTED] [REDACTED]" });
+});
diff --git a/tests/runner-e2e/grok-subscription-fixture.ts b/tests/runner-e2e/grok-subscription-fixture.ts
new file mode 100644
index 00000000000..26524ea592d
--- /dev/null
+++ b/tests/runner-e2e/grok-subscription-fixture.ts
@@ -0,0 +1,42 @@
+import { mkdir, realpath, rm, writeFile } from "node:fs/promises";
+import path from "node:path";
+import { hasUsableGrokAuthValue, parseGrokAuthPayload, resolveManagedGrokHomeDir } from "../../packages/adapters/grok-local/src/server/grok-home.js";
+
+function credential(raw: string) {
+  if (Buffer.byteLength(raw) > 256 * 1024) throw new Error("Grok fixture credential exceeds its bound");
+  let parsed: unknown;
+  try { parsed = JSON.parse(raw); } catch { throw new Error("Grok fixture credential is malformed"); }
+  const result = parseGrokAuthPayload(parsed);
+  if (!result || !hasUsableGrokAuthValue(result.value)) throw new Error("Grok fixture credential is malformed");
+  return result;
+}
+
+/** Test setup only: seed the explicit login in a new disposable company slot.
+ * Production credential discovery, process fencing, and refresh remain unchanged.
+ */
+export async function stageGrokSubscriptionFixture(input: {
+  raw: string;
+  companyId: string;
+  environment: NodeJS.ProcessEnv;
+}): Promise<() => Promise<void>> {
+  credential(input.raw);
+  const env = input.environment;
+  const root = env.PAPERCLIP_RUNNER_E2E_TEMP_ROOT;
+  if (!root || !/^[0-9a-f-]{36}$/i.test(input.companyId) ||
+      !/^runner-e2e-[a-z0-9-]+$/.test(env.PAPERCLIP_INSTANCE_ID ?? "")) {
+    throw new Error("Grok fixture requires an isolated test company and instance");
+  }
+  const canonicalRoot = await realpath(root);
+  const home = env.PAPERCLIP_HOME;
+  if (!home || await realpath(home) !== path.join(canonicalRoot, "paperclip-home")) {
+    throw new Error("Grok fixture refuses a home outside its isolated test root");
+  }
+  const companyHome = resolveManagedGrokHomeDir(env, input.companyId);
+  await mkdir(companyHome, { recursive: true, mode: 0o700 });
+  if (!(await realpath(companyHome)).startsWith(`${canonicalRoot}${path.sep}`)) {
+    throw new Error("Grok fixture refuses a redirected company home");
+  }
+  // Never replace an existing company's login, including through a symlink.
+  await writeFile(path.join(companyHome, "auth.json"), input.raw, { flag: "wx", mode: 0o600 });
+  return () => rm(companyHome, { recursive: true, force: true });
+}
diff --git a/tests/runner-e2e/harness-env.ts b/tests/runner-e2e/harness-env.ts
index afab17b6ead..6be582baf18 100644
--- a/tests/runner-e2e/harness-env.ts
+++ b/tests/runner-e2e/harness-env.ts
@@ -129,7 +129,8 @@ export function buildRunnerE2EProcessEnvironment(
 /**
  * Build the environment inherited by the Paperclip server. Paid credentials
  * deliberately stay in the launcher/Playwright process and cross the server
- * boundary only once, in the encrypted company-secrets API request.
+ * boundary through encrypted company secrets. Explicit subscription fixtures
+ * stage their login in the disposable company's private credential home.
  */
 export function buildPaperclipServerEnvironment(
   source: NodeJS.ProcessEnv,
diff --git a/tests/runner-e2e/live-fixtures.ts b/tests/runner-e2e/live-fixtures.ts
index edb960b851b..7346ceb6dd0 100644
--- a/tests/runner-e2e/live-fixtures.ts
+++ b/tests/runner-e2e/live-fixtures.ts
@@ -1,6 +1,7 @@
 import path from "node:path";
 import { isManagedHiringCase } from "./chat-cases.js";
 import { FixtureRegistry } from "./fixture-registry.js";
+import { stageGrokSubscriptionFixture } from "./grok-subscription-fixture.js";
 import type { RunnerApi } from "./api.js";
 import type {
   CredentialName,
@@ -150,6 +151,7 @@ export async function setupLiveFixtures(input: {
       const company = value<CompanyRecord>(resolved, "company");
       const refs: SecretReferenceMap = {};
       for (const credentialName of execution.requiredCredentials) {
+        if (credentialName === "GROK_AUTH_JSON") continue;
         const rawValue = input.credentials[credentialName];
         if (!rawValue) throw new Error(`Missing credential ${credentialName}`);
         const secret = await api.postSensitive<SecretRecord>(
@@ -171,11 +173,29 @@ export async function setupLiveFixtures(input: {
     },
   });
 
+  const grokSubscription = execution.profile.credential === "GROK_AUTH_JSON";
+  if (grokSubscription) {
+    registry.register<() => Promise<void>>({
+      id: "subscription-login",
+      dependencies: ["company"],
+      async setup(resolved) {
+        const raw = input.credentials.GROK_AUTH_JSON;
+        if (!raw) throw new Error("Missing credential GROK_AUTH_JSON");
+        return stageGrokSubscriptionFixture({
+          raw, companyId: value<CompanyRecord>(resolved, "company").id,
+          environment: process.env,
+        });
+      },
+      async teardown(remove) { await remove(); },
+    });
+  }
+
   registry.register<EnvironmentRecord>({
     id: "environment",
     dependencies: [
       "company",
       "secrets",
+      ...(grokSubscription ? ["subscription-login"] : []),
       ...(execution.environment.id === "daytona" ? ["sandbox-provider"] : []),
     ],
     async setup(resolved) {
@@ -252,6 +272,7 @@ export async function setupLiveFixtures(input: {
       "company",
       "secrets",
       "environment",
+      ...(grokSubscription ? ["subscription-login"] : []),
       ...(managedHiring ? ["ai-connection"] : []),
     ],
     async setup(resolved) {
diff --git a/tests/runner-e2e/redaction.ts b/tests/runner-e2e/redaction.ts
index d6316a6f591..ec9df5fd5c9 100644
--- a/tests/runner-e2e/redaction.ts
+++ b/tests/runner-e2e/redaction.ts
@@ -14,11 +14,27 @@ const SENSITIVE_JSON_KEY =
 
 export function normalizedSecrets(values: readonly (string | undefined)[]) {
   return [
-    ...new Set(
-      values
-        .map((value) => value?.trim())
-        .filter((value): value is string => Boolean(value)),
-    ),
+    ...new Set(values.flatMap((value) => {
+      const trimmed = value?.trim();
+      if (!trimmed) return [];
+      if (trimmed.startsWith("{")) {
+        try {
+          const parsed = JSON.parse(trimmed) as unknown;
+          // Subscription credentials are structured JSON. A log may contain an
+          // individual token or identity rather than the whole serialized file.
+          const leaves = (value: unknown, depth = 0): string[] => {
+            if (depth > 8) return [];
+            if (typeof value === "string") return value.length >= 8 ? [value] : [];
+            if (!value || typeof value !== "object") return [];
+            return Object.entries(value).flatMap(([key, child]) => [
+              ...(key.includes("::") ? [key] : []), ...leaves(child, depth + 1),
+            ]);
+          };
+          return [trimmed, ...leaves(parsed)];
+        } catch { /* Preserve ordinary non-JSON secrets. */ }
+      }
+      return [trimmed];
+    })),
   ].sort((left, right) => right.length - left.length);
 }
 
diff --git a/tests/runner-e2e/types.ts b/tests/runner-e2e/types.ts
index 8bb7f0df3a1..41726d2a6f0 100644
--- a/tests/runner-e2e/types.ts
+++ b/tests/runner-e2e/types.ts
@@ -3,6 +3,7 @@ export const CREDENTIAL_NAMES = [
   "ANTHROPIC_API_KEY",
   "OPENROUTER_API_KEY",
   "XAI_API_KEY",
+  "GROK_AUTH_JSON",
   "DAYTONA_API_KEY",
 ] as const;
 
diff --git a/tests/runner-e2e/workflow-security.test.ts b/tests/runner-e2e/workflow-security.test.ts
index f02dfdd90be..03f937131b8 100644
--- a/tests/runner-e2e/workflow-security.test.ts
+++ b/tests/runner-e2e/workflow-security.test.ts
@@ -314,7 +314,7 @@ describe("public repository paid workflow security", () => {
       paidExecution,
     );
     expect(everydayOracleStep).toContain(
-      "if: matrix.suiteId == 'everyday-workflows' && (matrix.caseId == 'build-revise' || matrix.caseId == 'delegate-feedback' || matrix.caseId == 'agent-review-handoff' || matrix.caseId == 'hire-reuse' || matrix.caseId == 'recover-controller' || matrix.caseId == 'stop-redirect')",
+      "if: (matrix.suiteId == 'everyday-workflows' || matrix.suiteId == 'grok-qualification' || matrix.suiteId == 'grok-subscription-qualification') && (matrix.caseId == 'build-revise' || matrix.caseId == 'delegate-feedback' || matrix.caseId == 'agent-review-handoff' || matrix.caseId == 'hire-reuse' || matrix.caseId == 'recover-controller' || matrix.caseId == 'stop-redirect')",
     );
     expect(everydayOracleStep).toContain(
       `oracle_image='${everydayOracleImage}'`,
@@ -527,6 +527,7 @@ describe("public repository paid workflow security", () => {
       ANTHROPIC_API_KEY: "matrix.credentialName == 'ANTHROPIC_API_KEY'",
       OPENROUTER_API_KEY: "matrix.credentialName == 'OPENROUTER_API_KEY'",
       XAI_API_KEY: "matrix.credentialName == 'XAI_API_KEY'",
+      GROK_AUTH_JSON: "matrix.credentialName == 'GROK_AUTH_JSON'",
       DAYTONA_API_KEY: "matrix.environmentId == 'daytona'",
     })) {
       expect(fullStack).toContain(