Files
PaperClipAI/packages/adapter-utils
aaeff418cf fix(acpx): add a positive control to stalled-tool permission evidence (#16769)
## Thinking Path

> - Paperclip is the open source app people use to manage AI agents for
work.
> - The ACPX engine runs Claude agents. A watchdog ends a turn when a
pending tool call gets no update for 30 minutes.
> - #16688 added a field to stalled runs. The field records if the
stalled call's permission request reached Paperclip.
> - Recent stalled runs show `acpStalledToolPermissionRequested: false`.
We can read this as "the call stopped before its permission request".
That reading is correct only if calls of the same kind usually send a
request.
> - We have no data that shows if finished calls of that kind sent
requests. Thus we cannot tell if the missing request is a real signal.
> - This pull request records a positive control: the number of finished
calls of the stalled call's kind, and how many of them sent a permission
request.
> - The benefit: the next stall event tells us if the missing request
locates the stall, or if it gives no information.

## Linked Issues or Issue Description

Refs #16688

**What happened?**
Runs stop with the stalled-tool watchdog error. The diagnostics show
that the stalled call sent no permission request. The diagnostics do not
show if finished calls of the same kind sent requests.

**Expected behavior**
The stalled-run diagnostics contain enough data to show if a missing
permission request is a real signal.

**Steps to reproduce**
A pending tool call gets no ACP update for 30 minutes. The watchdog ends
the turn. The run result contains the stalled-tool fields.

## What Changed

- `packages/adapter-utils/src/acpx-engine/execute.ts`: when the watchdog
fires, count the finished calls of the stalled call's kind, and count
how many of them sent a permission request. Write the counts to the run
result as `acpSettledSameKindToolCount` and
`acpSettledSameKindToolPermissionRequestedCount`.
- `server/src/services/run-failure-diagnostics.ts`: allow the two new
fields as non-negative safe integers. Other values are dropped.
- `doc/observability.md`: explain how to read the two fields with the
existing permission-request field.
- Tests: extend the existing stalled-tool tests in `execute.test.ts` and
`run-failure-diagnostics.test.ts`.

## Verification

- `pnpm exec vitest run src/acpx-engine/execute.test.ts` in
`packages/adapter-utils`: 244/244 pass.
- `pnpm exec vitest run
src/services/__tests__/run-failure-diagnostics.test.ts` in `server`:
115/115 pass.
- Mutation check: remove the kind filter, or count every finished call
as "requested". Each mutation makes the stalled-tool test fail.
- `tsc --noEmit` passes in `packages/adapter-utils` and in `server`.
Note: the full `server` `typecheck` script did not run locally, because
the runner vendor build step failed in this sandbox. I ran `tsc
--noEmit` directly.

## Risks

- Low risk. The change only adds two counts to the run result after the
watchdog fires. It does not change the decision to stop the turn, or any
permission decision.
- The fields hold only counts. They contain no tool titles, inputs, or
identifiers. This is the run-log and run-result path. It is not
Telemetry. The fields reach Sentry through the existing allowlist in
`run-failure-diagnostics.ts`.

## Model Used

- Claude Opus 5.5 (`claude-opus-5-5`), Anthropic, used through Claude
Code with tool use (shell, file edits, test runs).

## 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
- [ ] All Paperclip CI gates are green
- [ ] Greptile is 5/5 with no open P2s, recommendations, or follow-ups
- [x] I will address all Greptile and reviewer comments before
requesting merge

🤖 Generated with [Claude Code](https://claude.com/claude-code)

---------

Co-authored-by: devinfoley <139239+devinfoley@users.noreply.github.com>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-18 13:59:16 -07:00
..

@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) to remoteDir before the run starts. Runs with no git remote configured.
  • restoreWorkspaceFromSshExecution({ spec, localDir, remoteDir, ... }) — syncs the remote cwd back into localDir after the run, including any new commits the agent created. Also runs with no git remote configured.

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.