## Thinking Path > - Paperclip manages AI agents and their work. > - Users choose a harness during agent setup. > - Claude, Codex, and OpenCode already receive their qualified Runner default. > - Pi has a qualified native integration but new Pi agents still use the direct adapter. > - This change gives new Pi agents the native default on supported targets. > - Saved agents keep their runner and compatible settings. Legacy remains available in Advanced. ## Linked Issues or Issue Description Refs #17120, #14921, #14922, #14923, #14924, and #14956. Related generic default work: #15422. This PR is the separate Pi follow-up to the merged OpenCode change. **Current behavior** Choosing Pi for a new agent saves the direct Pi adapter. The native Pi integration remains behind the generic experimental flag. **Proposed behavior** Default new Pi agents to ACPX Pi on macOS ARM64/x64 and GNU/Linux x64 with supported glibc. Keep unsupported targets and explicit Legacy selections on the direct adapter. Require an explicit provider/model before test or hire. Permit model-free inactive setup drafts. **Reason and benefit** Users choose Pi once and receive its qualified runner. Saved agents retain their identity and settings. Conversions reject unsupported legacy thinking and launch settings instead of dropping them. ## What Changed - Add Pi to the shared platform/default contract and server creation selection. - Admit native Pi without the generic experimental flag. - Preserve provider models, credentials, workspace settings, exact thinking, and saved native policies. - Add Pi runner controls, branding, setup resume, onboarding, built-in configuration, and import handling. - Add managed Pi OpenRouter routing and matching native provider API-key accounts. Keep subscription and custom gateway exclusions. Clear alternate credentials and reject custom Pi provider overrides. - Keep Pi draft models empty instead of applying Claude's default model. - Verify setup against the pinned Pi runtime. For native Pi on the official OpenRouter route, reverify the API key live without requiring a global Legacy Pi CLI. - Match Pi’s bounded controller close window to its native snapshot cleanup and lifetime verification, preserving explicit caller deadlines and the mandatory drain/suspension proof. - Bind Pi sidecars to the package that owns the pinned native assets, including source and vendored server layouts. Other providers retain their existing package authority. - Keep protocol-owned finish/block tools out of the ACPX forwarded catalog. The trusted bridge installs these tools itself; the complete Rust authorization catalog and terminal receipt ledger remain intact. This fixes actual Pi session startup and applies to other ACPX consumers. - Advance Copilot’s shared-source attestation to v58 because it pins the shared files touched by Pi. Preserve immutable v57 bytes and historical decoding; Pi’s own release identity is unchanged. - Add regression coverage and update the paired maps and developer documentation. ## Verification - Passed: full repository typecheck and full production build on final head656d304783, including the generated attestation repair. - Passed: focused shared/server/UI suites covering default selection, platform fallback, conversion preservation, inactive drafts, managed account compatibility, credential isolation, OpenRouter routing/model IDs, exact thinking controls, and saved-account selection. Relevant batches include 375 server/conversion tests, 267 account/routing tests, and 110 UI setup/account tests. - Passed: 179 attestation, historical-profile, qualified-profile, and native-execution contract tests after CI identified stale Copilot source hashes. The identity generator check passes; the only delta after the passing Pi browser run is this Copilot attestation/history repair. - Passed: 145 managed-account tests, including actual service preparation and API-key adoption/rejection for native Pi without the Legacy CLI; 6 pinned-installation probe tests. - Red then green: an actual task failed session.open because its 54-operation catalog included the bridge-owned terminal tools. The regression with those tools failed before the filter; all 399 Rust library tests pass after it. The full product retry exposed an additional package-authority mismatch. Four authority tests failed before that repair; 11 authority checks and 14 installation/asset checks pass afterward. Direct real Pi session initialization with the corrected package root and catalog succeeds. No model prompt was sent by that diagnostic. - Red then green: real Pi posted Hello from Pi but its controller closed before native cleanup could finish. The cleanup-budget test failed with the old default and passes with the bounded Pi window. All 46 selected suspension, drain, and package-authority tests pass after building their native fixture. - Passed: token gates, paired map checks, Rust formatting, and git diff --check. - Passed real browser acceptance on macOS ARM64, generic native runner flag disabled, sourcea433748a12(Pi code unchanged afterward): the UI selects Paperclip Runner by default, retains Pi and the selected model/account, and verifies the pinned runtime plus live OpenRouter key. A fresh UI-created task, assigned to the UI-created native Pi agent, posted exactly `Hello from Pi` and reached Done without retry or restart. The native run and workspace finalization succeeded; the response and Done persisted after Reload. - Evidence: 8 preserved browser attempts, including the final passing 18-step journey with all screenshots. Prior failures remain recorded. The earlier failed checkpoint run recovered on server restart; that recovery is separate from the fresh final task’s clean success. - Preserved browser failures: missing account control/inherited Claude draft model; incompatible managed-account/model-prefix handling; generic npm probe for Pi; Legacy CLI hello check; duplicate terminal tools and wrong provider-package authority at actual native session.open; a real Hello from Pi comment followed by premature checkpoint cleanup timeout. Each failure has retained screenshots/logs and a corresponding focused repair. The fresh final task proves these repairs end to end. - The exact Runner Vitest shard was also run locally after the attestation fix: the stale-hash failure is gone; 1,833 tests passed, 10 skipped, and two Codex retained-control settlement scenarios failed with `native_cleanup_maintenance_unproven` during terminal ACK/suspension replay. Both scenarios passed in an isolated rerun (2/2), and the same 19-test file passed in the preceding Linux CI run. The precise full-shard timing cause is not established. These Codex scenarios are outside the changed Pi paths; the original local failures are retained; no complete local Runner-shard pass is claimed. The corresponding Runner shard now passes on the final head in hosted Linux CI. All 60 final-head check runs are now terminal and clean (55 successful, 1 neutral, 4 skipped), and the legacy Snyk status is successful. - Local full repository tests were attempted but not completed: provisioning briefly confused a workspace symlink, then a later run was stopped before browser-driven repairs. No full local-suite pass is claimed. Final-head hosted CI is green and fresh Greptile review is 5/5 with all review threads resolved; earlier jobs canceled by runner shutdown are not counted as a pass. ## Risks - Pi cleanup has a finite 45-second default window, accounting for the native 30-second snapshot cleanup and 5-second lifetime fence. Other providers and explicit caller deadlines retain their prior behavior. - Pi requires explicit operator setup with `paperclipai runtime setup pi` on the execution host. This PR does not add automatic downloads. - Linux ARM64, Windows, musl, and unqualified targets retain Legacy. - Legacy thinking levels minimal, medium, and xhigh cannot be translated exactly. Native max thinking, warm lifecycle, or restricted permissions cannot be dropped during a return to Legacy. - Copilot’s bound profile advances to v58 with exact current launch admission; v57 remains decodable for recovery. No historical identity is rewritten. - Existing agents and immutable run descriptors are not migrated. Cloud Pi availability is unchanged. ## Model Used OpenAI GPT-6 through Codex with reasoning, code editing, command execution, and browser use. The exact serving model ID and context-window size are not exposed in this session. ## 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 (e.g. `docs/...`, `fix/...`) and contains no internal Paperclip ticket id or instance-derived details - [x] I have run tests locally and they pass - [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>
@paperclipai/adapter-utils
Shared utilities for Paperclip adapters: process spawning, environment injection, sandbox/SSH transport, workspace sync, and the round-trip helpers that move code between the local execution-workspace cwd and wherever the agent actually runs.
For the adapter-author guide see
docs/adapters/creating-an-adapter.md
and the in-repo notes at packages/adapters/AUTHORING.md.
Sandbox bridge deadlines
Command-managed bridge control operations (queue reads, input delivery, setup, and cleanup) have a host-enforced deadline of at most 30 seconds per shell command. A shorter configured timeout still applies. These operations cannot inherit the agent run's hours-long lifetime or wait forever on a provider that ignores its timeout. Long-lived agent session commands keep their own limits.
A control timeout reports a transport failure. It does not prove that the remote command stopped and does not replay an uncertain write. The process session closes failed input delivery and uses its existing shutdown path; normal execution settlement must still verify termination.
No-remote-git contract
The local execution-workspace cwd is the only persistence boundary across runs. No adapter may depend on a git remote for cross-run state.
Adapters that run the agent on a different host should use the SSH round-trip
helpers in src/ssh.ts:
prepareWorkspaceForSshExecution({ spec, localDir, remoteDir })— bundles the local cwd (tracked files, dirty edits, untracked additions, and the git history needed to reconstruct it) toremoteDirbefore the run starts. Runs with nogit remoteconfigured.restoreWorkspaceFromSshExecution({ spec, localDir, remoteDir, ... })— syncs the remote cwd back intolocalDirafter the run, including any new commits the agent created. Also runs with nogit remoteconfigured.
prepareRemoteManagedRuntime in
src/remote-managed-runtime.ts wraps both
calls for adapters that want a per-run remote workspace and an automatic
restoreWorkspace() finally hook.
The invariant is pinned by the no-remote-git contract case in
src/ssh-fixture.test.ts, which asserts that a
remote-only commit propagates to the local worktree through the
prepare → restore round-trip with no git remote configured at any point. Do
not regress that test.