## Thinking Path > - Paperclip is the open source app people use to manage AI agents for work. > - Harness selection maps supported agents to Paperclip Runner. > - The native Runner already supports Grok Build, but its migration mapping excludes Grok. > - Grok agents also have a thinking-effort setting that the native execution contract does not carry. > - This pull request adds the migration path and preserves explicit Grok effort through startup and resume. > - Operators can upgrade an existing Grok agent without silently losing its model, account, or effort. ## Linked Issues or Issue Description **What happened?** Existing Grok Build agents have no Runner selector or upgrade action. Adding only the mapping would route conversion through the Codex fallback and lose Grok execution semantics. Native execution also ignores the legacy reasoning-effort field. **Expected behavior** A qualified Grok agent can explicitly upgrade. The saved model, account, instructions, history, and supported effort remain intact. Unsupported legacy settings fail before saving. The provider must acknowledge the selected effort before inference. **Steps to reproduce** 1. Open the runtime page of an existing Grok Build agent on a qualified Linux x64 or macOS ARM64 computer. 2. Observe that the Runner selector and upgrade action are absent. 3. Compare the native execution input with the saved legacy reasoning-effort setting. Related work: #13882 introduced native Grok Build. #15422 covers the earlier default-runner work. This change extends the current shared selection contract. ## What Changed - Add the Grok harness mapping, qualified platform limits, upgrade action, and company-scoped computer qualification. - Translate Grok settings to ACPX without changing the selected account or explicit model. Resolve the legacy default model to the native default. Preserve the effective legacy search policy. Reject incompatible command, argument, permission, and turn-limit settings. - Add native execution input v10 for explicit Grok effort and search policy. Preserve historical schemas. Enforce disabled search through Grok requirements and bind it across startup and recovery. - Apply and verify ACP `reasoning_effort` before prompting. Bind the value to provider descriptors, checkpoints, runtime identity, and resume checks. - Use the Grok catalog and effort choices in the task composer. Apply task model and effort overrides while retaining the agent account and search policy. Update runtime controls, portability/default handling, documentation, and capability maps. - Advance Pi and Copilot source attestations for changed shared transport and recovery code. Keep historical identities intact and update all Rust integration fixtures. ## Verification - Migration and review regressions were reproduced before the fixes. Coverage includes the Grok mapping, default model, explicit effort, implicit search policy, task overrides, and incompatible legacy settings. The broad migration, route, immutable-input, and composer check passed 478 tests. The final catalog and task-input check passed 135 tests. - Runner startup, recovery, search policy, and profile checks passed 361 tests, with one platform skip. The final source-identity, search-admission, and transport event-pump check passed 89 tests. - All 757 Rust workspace tests passed for the broad implementation. After the final source attestation update, all 55 ACPX profile/session tests passed. - `pnpm -r typecheck` and `pnpm build` passed for the implementation. Server and Runner typecheck passed after the final production change. Server `tsc --noEmit` passed after the final test-fixture change. Docker context integrity, token gates, maps, generated protocol data, and replay goldens passed. - The v10 startup fixture initially used an ambient local Grok login and failed on CI. An explicitly empty credential home reproduced all four failures. The fixture now supplies a synthetic key and a private empty home. A separate case checks that missing credentials fail closed. All seven selected Grok v10 and Claude v9 startup cases pass without host credentials. - The full local suite could not complete because embedded PostgreSQL failed before database-backed fixture setup. The broad executor-suite attempt hit the same limit and was stopped. Neither attempt is counted as passing. Current-head CI must verify those paths before merge. - Earlier CI found missing Rust input fields, stale source attestations and exact fixture pins, a missing Docker context entry, and an outdated import expectation. Those failures were fixed and checked locally. The CI logs retain the original failures. - Different earlier CI runs also failed unchanged cleanup pagination, device-login timeout, and chat lost-response recovery cases. Later attempts passed the cleanup and login cases without changes to those implementations. Their causes remain unproven. The original evidence remains in [the first run](https://github.com/paperclipai/paperclip/actions/runs/40563402840), [the login run](https://github.com/paperclipai/paperclip/actions/runs/40571128328), and [the chat run](https://github.com/paperclipai/paperclip/actions/runs/40573072163). A passing retry does not establish a root-cause fix. - Both reviews rate current head `16fba9b4cdf12bc7945e6628912e79da42959f35` 5/5. All current-head CI gates pass in [run 40576580699](https://github.com/paperclipai/paperclip/actions/runs/40576580699). All 60 check runs completed cleanly, including the four intentional skips and the neutral 5/5 Paperclip review. The legacy security status is successful. No review threads remain unresolved. - Staging migration and a real shell task are pending deployment. This PR does not claim full Grok provider qualification. Reviewers can verify the operator path by upgrading a qualified Grok agent, checking its saved model and effort, and running a shell task through native execution. ## Risks - Explicit effort and search policy require the matching Runner and sidecar build. Older immutable execution inputs keep their existing schemas. - Providers that omit or reject the selected effort fail before a prompt. Unsupported effort does not fall back silently. - Existing agents retain their saved runner until an explicit change. New Grok agents use native execution only on qualified platforms. - Grok token and cost reporting remain unverified, as before. ## Model Used OpenAI Codex, GPT-6 family. The exact serving model ID and context-window capacity are not exposed in this session. Used reasoning, source editing, shell execution, and browser inspection. ## Checklist - [x] I have included a thinking path that traces from project context to this change - [x] I have specified the model used (with version and capability details) - [x] I have checked ROADMAP.md and confirmed this PR does not duplicate planned core work - [x] I have searched GitHub for duplicate or related PRs and linked them above - [x] I have either (a) linked existing issues with `Fixes: #` / `Closes: #` / `Refs: #` OR (b) described the issue in-PR following the relevant issue template - [x] I have not referenced internal/instance-local Paperclip issues or links (only public GitHub `#NNN` / `github.com/paperclipai/paperclip` URLs) - [x] My branch name describes the change and contains no internal Paperclip ticket id or instance-derived details - [x] I have run tests locally and the focused suites pass; the full local suite has the environment limitation recorded above - [x] I have added or updated tests where applicable - [x] I have updated relevant documentation to reflect my changes - [x] I have considered and documented any risks above - [x] All Paperclip CI gates are green - [x] Greptile is 5/5 with no open P2s, recommendations, or follow-ups - [x] I will address all Greptile and reviewer comments before requesting merge --------- Co-authored-by: Paperclip <noreply@paperclip.ing>
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Grok Build native runner
Select Grok Build in the native runner provider selector. The stored contract is
adapterType: "paperclip_runner" with provider: "acpx", acpxAgent: "grok",
and model: "grok-4.7". Existing grok_local agents keep their legacy adapter
until an explicit upgrade. On a qualified macOS ARM64 or Linux x64 computer,
Harness / Runtime → Upgrade runner preserves the agent, model, account,
instructions, and history. It starts fresh execution sessions. Advanced also
offers an explicit Runner choice. Unsupported legacy settings are rejected
before saving; select compatible settings or keep Legacy.
New Grok runner agents default to Full auto (approve all)
(acpxPermissionMode: "approve-all") in setup and the configuration form.
API configurations that omit the permission mode use the same default. No
additional permission setting is needed for unattended execution. Explicitly
saved restrictions remain unchanged.
Grok Build's qualified harness does not require the enableNativeRunner flag.
Explicit thinking effort uses reasoningEffort (minimal, low, medium,
high, or xhigh). The immutable v10 execution input, provider descriptor,
and recovery identity bind this value as grokEffort. Before a prompt, the
Runner applies ACP reasoning_effort and requires Grok to acknowledge the exact
value. Missing configuration, a rejected value, or effort drift stops admission.
Omitting effort retains Grok's provider default. This setting remains outside
the model-visible task prompt. Historical execution inputs retain their schemas.
The upgrade resolves an unset model or the legacy grok-build default to the
native grok-4.7 default. Task-level model and effort overrides use the Grok
catalog and keep the account and tool policy unchanged.
Migration also preserves the effective disableWebSearch setting, whose legacy
default is true. Native input v10 carries it as grokDisableWebSearch through
startup and recovery. Grok's private requirements.toml enforces disabled search
above compatible project settings. Explicit false retains enabled search;
unset native configurations retain their provider default. See Grok's
configuration reference.
Grok Build speaks ACP over stdio.
The runner owns grok agent --no-leader stdio through ACPX, including session
identity, cancellation, recovery and the authenticated Paperclip MCP bridge.
ACP permission requests are approved by the runner under the default full-auto
policy. It does not add --always-approve: permission decisions remain under
the selected ACPX policy. Grok's ACP metadata cannot independently establish
Paperclip tool authority, so explicitly selecting approve-paperclip or
approve-reads returns the approval-required outcome; deny-all rejects requests.
Full auto does not bypass Paperclip's company permissions, governed approvals,
or execution-environment boundaries. Isolated ask
rules override project allow rules, and compatible always-approve settings are
locked off. Compatible hook/MCP discovery and shell login capture are disabled.
Installation and identity
Grok support ships inside the native runner and the public Paperclip server npm
artifact. There is no separate Grok npm package, binary payload, or npm lifecycle
download. The built-in launcher is identified as builtin:grok-acp version 1;
its native runtime identity is native:grok version 1.0.13. The historical
agentServerPackage/agentRuntimePackage wire fields carry these identities,
not npm dependencies. Existing npm-backed ACP bridges retain their package pins.
Provision Grok Build 1.0.13 at
/opt/paperclip/providers/grok/1.0.13/grok in the selected execution environment.
The sandbox provisioning helper is explicit and is never run by npm:
sudo node packages/paperclip-runner/scripts/provision-grok.mjs /opt/paperclip/providers/grok/1.0.13/grok
The standard Daytona image provisions it separately from the provider pack.
Custom images and local execution hosts must provide the same prerequisite.
The runner verifies the native executable checksum before credential refresh or
ACP startup; a missing prerequisite reports the required path and version.
Only macOS arm64 and Linux x64 are qualified. No ambient grok from PATH is used.
ACP must report the requested exact model; mismatches fail closed.
The distribution identity change deliberately rejects resume bindings from the former private-package profile. Start a fresh session after upgrading that unreleased profile; do not silently reinterpret its saved identity.
Instructions use Grok ACP session rules. Assigned skills live in the isolated Grok home. Steering and goals are unsupported. Token and cost values remain unknown when Grok does not report them; missing usage is not zero usage.
Authentication
Use the existing Grok company connection/login flow for subscription execution.
An explicitly selected company-secret XAI_API_KEY selects paid API execution.
There is no automatic subscription-to-API fallback. Remote execution cannot
borrow the operator's home credentials. Local execution can use the operator's
existing Grok login when no company login has been selected.
Only the selected credential is staged in the private runtime home. An ownership
lease fences concurrent processes. Before ACP startup, an expiring subscription
credential is refreshed through the verified Grok executable’s non-inference
models command. This bounded step suppresses output and prevents Grok 1.0.13
from caching a pre-refresh model list. Exact model verification still precedes
any prompt; refresh failure requires reconnecting Grok Build. After the provider exits, refreshed credentials
are copied back through Grok's existing identity and refresh checks. Runtime
credentials, refresh handoffs, and diagnostic logs are excluded from workspace
backups and removed on close. Session history remains available for resume. Host
configuration, other provider credentials and unselected keys are not forwarded
to Grok.
Evaluation
The private paperclip-evals repository maintains live-acpx-grok-4.7.json and
rosters/live-acpx-grok.json. The roster covers all 39 protocol cases. Its campaign
lane remains disabled pending complete live qualification.
Product E2E exposes runner-acpx-grok in core local/Daytona compatibility and
local session integrity. The explicit grok-qualification suite covers replies,
planning approvals, structured questions, downloadable project revisions, stop/resume
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
or --auth api --output /private/report.json with an explicitly supplied key.
Each attempt is retained; unknown usage and cost are null.
Qualification requires the full protocol roster, selected product workflows, subscription and API execution locally and on Daytona, and three successful repetitions of core tool, approval and resume cases. Deterministic tests or a single successful browser task do not establish that qualification.
Remote verification
Do not run Docker on a developer laptop when using remote verification. The
Docker Runner check workflow offers maintainer-authorized manual Linux image
builds and broad source checks without provider credentials. It records the
source revision, resolved lock digest and immutable image reference. Paid
Product E2E remains behind the protected default-branch workflow and environment.
The public npm consumer check uses a digest-pinned, unprivileged container with
no checkout or credentials mounted. It downloads dependencies with lifecycle
scripts disabled and freezes the resulting consumer lockfile. It completes the
clean install with offline npm rebuild, running the deferred lifecycle hooks
without re-resolving bundled optional dependencies. Networking stays disabled,
the lockfile must remain unchanged, and a sentinel proves scripts actually ran.
The pinned image includes native build tools and local Node headers so dependency
hooks can compile without network access. Both executable admission probes run
in the same isolation. The verification user provisions Grok inside the disposable
test directory without privilege elevation or host /opt changes. Only the
positive probe mounts that binary read-only at the canonical sandbox path.
The Cloud application image also carries the controller-owned provider pack and
sets PAPERCLIP_RUNNER_REMOTE_PROVIDER_PACK_PATH. Remote ACPX execution verifies
the sandbox against that pack before using it, or stages the matching pack when
needed. The Cloud controller image does not install the native Grok executable;
the selected sandbox image must provide the prerequisite above.
Cloud builds must supply the full source SHA through PAPERCLIP_BUILD_COMMIT
to produce that verified pack. Unstamped local Cloud builds still work for other
features, but omit the pack and cannot start remote ACPX sessions.