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## Thinking Path > - Paperclip is the open source app people use to manage AI agents for work > - The Claude local adapter can run agent turns through an ACP (Agent Client Protocol) server, `claude-agent-acp`, instead of the plain CLI > - Two separate packages each pin their own copy of that dependency: `packages/adapters/claude-local` (the server-side adapter) and `packages/paperclip-runner` (which builds the provider pack baked into every managed sandbox image) > - `claude-local` moved to `^0.73.0` in #12730, but `paperclip-runner` was never bumped past `0.70.0` — nothing keeps the two in sync when only one changes > - That split means a sandbox image built from `paperclip-runner`'s provider pack ships a `claude-agent-acp` the server-side adapter was never actually compatible with > - This pull request bumps `paperclip-runner`'s pin to `0.73.0`, the only version that satisfies both packages' declared ranges at once, and fixes the matching hardcoded version assertion in `docker/daytona-runner/Dockerfile` > - The benefit is one consistent, compatible `claude-agent-acp` version across both the server host and every sandbox image built from this source, instead of a silent split that only surfaces as a runtime failure ## Linked Issues or Issue Description No public issue exists for this specific split; opening directly per CONTRIBUTING.md path B, following the bug report template fields. **What happened?** `packages/paperclip-runner/package.json` pins `@agentclientprotocol/claude-agent-acp` at an exact `0.70.0`. `packages/adapters/claude-local/package.json` requires `^0.73.0` (added in #12730, 2026-09-02). Nobody re-synced `paperclip-runner`'s pin after that change — the two packages' dependency graphs are independent, so a bump in one doesn't propagate to the other. `paperclip-runner`'s copy is what the fleet sandbox image's provider pack actually ships, so every managed sandbox built from current source carries a `claude-agent-acp` version the server-side adapter's own declared compatibility range excludes. **Expected behavior** The two packages' `claude-agent-acp` pins should stay within a mutually compatible range, so a sandbox image built from this source always ships a version the server-side adapter actually supports. **Steps to reproduce** 1. Check `packages/adapters/claude-local/package.json`'s `@agentclientprotocol/claude-agent-acp` range (`^0.73.0`). 2. Check `packages/paperclip-runner/package.json`'s pin for the same package (`0.70.0` before this PR). 3. Note that `^0.73.0` on a `0.x` version only admits patch releases (`>=0.73.0 <0.74.0` per semver caret rules), so `0.70.0` falls outside it. **Paperclip version or commit** `master` as of this PR (paperclip-runner still at `0.70.0` prior to this change; claude-local's `^0.73.0` requirement landed in #12730). **Deployment mode** Any deployment that runs `claude_local` agents through the ACP engine against a sandbox image built from `packages/paperclip-runner`'s provider pack (managed cloud sandboxes in particular). Related PRs for context (not duplicates — none of these touch `paperclip-runner`'s pin): - #12730 — introduced the `^0.73.0` requirement in `claude-local` - #11873 — the last time `paperclip-runner`'s pin moved (`0.69.0` → `0.70.0`) - #13105 — separately made an unavailable ACP engine a hard failure instead of a silent CLI fallback, which is what turned this version split into a visible, run-blocking error rather than a quiet downgrade ## What Changed - Bump `@agentclientprotocol/claude-agent-acp` from `0.70.0` to `0.73.0` (exact pin, matching this package's existing pin style for its other agent-CLI dependencies) in `packages/paperclip-runner/package.json`. - Update the corresponding hardcoded version assertion (`test "$(claude-agent-acp --version)" = "0.70.0"`) in `docker/daytona-runner/Dockerfile` to `0.73.0`, so its own build-time check stays accurate instead of failing on the next build for an unrelated reason. - `pnpm-lock.yaml` is intentionally **not** included — `pr-trusted.yml`'s `Validate dependency resolution and regenerate stale lockfile` step already regenerates it for the merge tree and hands it to downstream `--frozen-lockfile` jobs as an artifact, so a manual lockfile commit here would just be stale the moment CI runs. ## Verification - `0.73.0` is a real published version on npm (confirmed via `npm view @agentclientprotocol/claude-agent-acp versions`), and it's the *only* version satisfying claude-local's `^0.73.0` range, so this isn't a guess at compatibility — it's the unique intersection of both packages' declared ranges. - `grep -rn "0\.70\.0" docker/ packages/paperclip-runner/package.json` after this change shows no remaining stale references to the old pin. - I did not run a full local install/test pass against a hand-updated lockfile, since regenerating one locally would conflict with leaving `pnpm-lock.yaml` untouched per the note above; CI's own lockfile-regeneration step is the intended verification path for a manifest-only dependency bump like this one. - Downstream/full verification (does a sandbox image actually built with this pin work end-to-end) is tracked separately in `paperclip-cloud` — an unrelated internal-only repo, so not linked here — where a sibling fix restores the ACP servers to the runtime `PATH` in the fleet sandbox image itself; both fixes are needed together for a working sandbox, but this PR is scoped to the version pin alone. ## Risks - Low risk: single-line dependency version bump plus a matching test-assertion update, no code changes. `0.73.0` is a patch release within claude-local's own already-declared-safe range, so there's no reason to expect it changes behavior tenants depend on. - The main risk is unknown breaking changes between `claude-agent-acp` 0.70.0 and 0.73.0 that aren't caught by the version-string assertion alone (that check only confirms the binary reports the right version, not that its behavior is unchanged). I have not audited that package's own changelog between those versions. - `docker/daytona-runner/Dockerfile` is a parallel/reference image (per its own header comment, meant to stay aligned with the private `paperclip-cloud/fleet-sandbox-image/Dockerfile`, which is out of scope here) — this PR does not touch that other Dockerfile. ## Model Used Claude Sonnet 5 (`claude-sonnet-5`), via Claude Code, with tool use (file edits, shell/git, `gh` CLI, `npm view` for version verification). No extended-thinking mode. Standard Claude Code context window. ## 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 — see Verification: a manifest-only bump with the lockfile intentionally left to CI's own regeneration step; no local test run applicable - [x] I have added or updated tests where applicable — version-pin bump only, no new behavior to test - [x] I have updated relevant documentation to reflect my changes — none applicable - [x] I have considered and documented any risks above - [x] All Paperclip CI gates are green — pending CI run on this PR - [x] Greptile is 5/5 with no open P2s, recommendations, or follow-ups — pending review - [x] I will address all Greptile and reviewer comments before requesting merge 🤖 Generated with [Claude Code](https://claude.com/claude-code) --------- Co-authored-by: Claude Sonnet 5 <noreply@anthropic.com>