## Thinking Path > - Paperclip uses pull requests to ship control-plane changes with review and audit. > - This change extends sandbox provider telemetry. > - The first PR added startup and exec spans. > - This PR adds provider spans for cache hits, plugin tracer flow, and Daytona file sync steps. > - The host must keep the trust boundary and reject unsafe span data. > - The result is fuller OTel coverage with bounded labels and safe parentage. ## Linked Issues or Issue Description **Problem or motivation** Sandbox provider telemetry lacks an explicit cache-hit signal, plugin span context, and file-sync pack and transfer spans. The current proxy for a cache hit is fragile. The plugin SDK also needs a safe tracer surface and a per-call parent context. **Proposed solution** Add an explicit `cacheHit` flag from the Daytona sandbox handle lookup. Expose `ctx.tracer` on the plugin context and pass a `traceparent` string with each call. Record provider spans on the host with allowlist clamping and capability checks. Wrap Daytona file sync pack and transfer steps in spans. **Alternatives considered** Keep the old `providerGetMs == 0` proxy. Reject that path because the cache-hit decision belongs at the handle lookup, not in a timing proxy. The host stays the trust boundary for worker span data. It clamps labels, rejects bad parent data, and gates the worker-to-host span RPC by capability. A security review completed before this PR opened. ## What Changed - Added an explicit `cacheHit` flag from the Daytona sandbox handle lookup. - Added `ctx.tracer` on the plugin context and a `traceparent` field in the per-call context. - Added host-side span recording with attribute clamping and capability checks. - Wrapped Daytona file sync pack and transfer steps in spans. - Added tests for the host trust boundary, the plugin tracer no-op path, and the Daytona span paths. ## Verification - `pnpm --filter @paperclipai/plugin-daytona exec vitest run` - `pnpm --filter @paperclipai/plugin-sdk exec vitest run` - `pnpm --filter @paperclipai/server exec vitest run plugin-host-services environment-execution-target instrumentation plugin-worker-manager` - `tsc --noEmit` for server, plugin-sdk, and adapter-utils ## Risks - Span data now crosses the worker boundary, so the host allowlist and capability gate must stay strict. - The `traceparent` path must stay valid and host-owned. - Daytona file sync spans must not add new round trips. ## Model Used OpenAI Codex, GPT-5, tool use. ## 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 linked existing issues with `Fixes:` / `Closes:` / `Refs:` or described the issue in the PR body - [x] I have not referenced internal or instance-local Paperclip issues or links - [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 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.
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.