Devin Foley
1bd44c8a0d
## Thinking Path > - Paperclip orchestrates AI agents for zero-human companies. > - Remote-managed adapters need sandbox/environment execution to behave like real agent runs, not just local host probes. > - The Cloudflare sandbox path was the weakest leg in the SSH + Cloudflare QA matrix because bridge execution could truncate output, time out long-running installs, and under-provision the worker instance. > - That made several adapters fail for reasons unrelated to their actual business logic, which blocks confidence in Paperclip's non-local environment model. > - This pull request hardens the Cloudflare bridge/runtime path and adjusts sandbox probe budgets so adapter verification matches the measured behavior of the fixed environment. > - It also corrects the Pi sandbox install command so the QA matrix exercises a real, supported install path. > - The benefit is a materially more reliable SSH + Cloudflare adapter matrix with fewer false negatives and clearer failure boundaries. ## What Changed - Switched the Cloudflare bridge worker instance type to `standard-2` for the QA-matrix execution path. - Raised Cloudflare bridge/plugin-worker timeout budgets and added SSE keepalives so long-running install/exec calls can complete instead of dying at the transport layer. - Fixed Cloudflare bridge-channel command handling to avoid dropped final stdout chunks on short-lived execs. - Made Claude, OpenCode, and Cursor sandbox probe timeouts configurable/sandbox-aware, then tightened the defaults to the measured post-fix range. - Updated the Pi sandbox install command to use the package currently installed by the official `pi.dev` installer, pinned to a specific npm version. - Added/updated tests around Cloudflare bridge behavior and adapter sandbox probe paths. ## Verification - `pnpm --filter @paperclipai/adapter-claude-local typecheck` - `pnpm --filter @paperclipai/adapter-opencode-local typecheck` - `pnpm --filter @paperclipai/adapter-cursor-local typecheck` - `pnpm vitest run packages/adapters/cursor-local packages/adapters/claude-local packages/adapters/opencode-local packages/adapters/pi-local packages/plugins/sandbox-providers/cloudflare server/src/services/__tests__/plugin-worker-manager.test.ts` - Manual QA on the dedicated dev instance using the SSH + Cloudflare environment matrix (`ENV-29` through `ENV-40`). Clean end-to-end passes: SSH `claude_local`, `codex_local`, `cursor`, `gemini_local`; Cloudflare `claude_local`, `codex_local`, `cursor`, `gemini_local`. ## Risks - Cloudflare sandbox cost increases because the bridge worker now runs on `standard-2` instead of `lite`. - Higher timeout ceilings can delay surfacing truly hung Cloudflare bridge calls, even though they remove transport-level false negatives. - The manual heartbeat matrix still exposed follow-on execution/sync/disposition bugs in `opencode_local` and `pi_local`; those are not fixed by this PR. ## Model Used - OpenAI `gpt-5.4` via Paperclip `codex_local`, reasoning effort `high`, tool use enabled, repo search enabled. ## 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 run tests locally and they pass - [x] I have added or updated tests where applicable - [x] If this change affects the UI, I have included before/after screenshots (not applicable) - [x] I have updated relevant documentation to reflect my changes (not applicable) - [x] I have considered and documented any risks above - [x] I will address all Greptile and reviewer comments before requesting merge --------- Co-authored-by: Paperclip <noreply@paperclip.ing>
Cloudflare Sandbox Bridge Template
This Worker is the operator-facing bridge used by @paperclipai/plugin-cloudflare-sandbox.
It exposes a small authenticated JSON API under /api/paperclip-sandbox/v1 and translates Paperclip lease and command requests into Cloudflare Sandbox SDK calls.
What it does
- health and probe
- acquire, resume, release, and destroy leases
- execute commands in a sandbox session
- clean up timed-out sessions so Paperclip does not inherit wedged background processes
Prerequisites
- Cloudflare account with Sandbox / Containers access
wranglerconfigured for that account- Docker running locally for
wrangler deploy - A bridge auth token set as a Worker secret:
npx wrangler secret put BRIDGE_AUTH_TOKEN
Local development
cd bridge-template
pnpm install --ignore-workspace --no-lockfile
pnpm test
pnpm typecheck
pnpm dev
Deploy
pnpm deploy
After deploy, configure Paperclip with:
bridgeBaseUrl: your Worker URLbridgeAuthToken: the same bearer token value stored inBRIDGE_AUTH_TOKEN
Notes
reuseLease: trueshould only be used together withkeepAlive: true.workers.devis fine for bridge HTTP traffic, but preview/wildcard host flows are intentionally out of scope here- keep the Docker image aligned with the installed
@cloudflare/sandboxversion