Files
PaperClipAI/packages
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
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