paperclip/packages/plugins/sandbox-providers/cloudflare/src/manifest.ts
Devin Foley e3c875c1c7
fix(sandbox): prevent E2B workspace upload + lease idle failures (PAPA-382) (#6560)
## Thinking Path

> - Paperclip orchestrates AI agents for zero-human companies
> - Heartbeats run inside managed sandboxes (E2B, Cloudflare Sandbox),
and each run begins by uploading the agent's workspace as a tar archive
> - PAPA-381's E2B runs were failing at 5 and 11 minutes — two distinct
failure modes were entangled: workspace tar extraction errors on Linux,
and sandbox idle/lease timeouts during normal heartbeat gaps
> - Workspace tar extraction failed because macOS bsdtar embeds
`LIBARCHIVE.xattr.*` PAX headers that GNU tar on Linux rejects with
"This does not look like a tar archive"; the existing
`COPYFILE_DISABLE=1` only suppresses AppleDouble `._*` sidecars, not
inline PAX xattr entries
> - E2B sandboxes also expired between heartbeats because `timeoutMs`
defaulted to a short window and was never refreshed per execute, and
Cloudflare sandboxes idled out because `sleepAfter` defaulted to 10
minutes
> - This pull request adds `--no-xattrs` to the workspace tar
invocation, refreshes the E2B sandbox lifetime on each execute and bumps
the default `timeoutMs` to 1h, and raises the Cloudflare `sleepAfter`
default to 1h
> - The benefit is that long-running heartbeat-driven runs (Claude,
Codex, etc.) survive across both their initial workspace upload and the
natural idle gaps between executes on both E2B and Cloudflare

## What Changed

- `packages/adapter-utils/src/sandbox-managed-runtime.ts`: added
`--no-xattrs` to `createTarballFromDirectory` so macOS bsdtar produces a
clean POSIX tar that GNU tar on Linux can extract, with an inline
comment explaining why `COPYFILE_DISABLE=1` alone is insufficient.
- `packages/plugins/sandbox-providers/e2b/src/plugin.ts`: refresh the
sandbox lifetime on every execute (so long runs don't expire mid-job)
and raised the default `timeoutMs` to 1h.
- `packages/plugins/sandbox-providers/e2b/src/manifest.ts` and
`plugin.test.ts`: updated manifest defaults and added regression
coverage for the new behavior.
- `packages/plugins/sandbox-providers/cloudflare/src/config.ts`,
`manifest.ts`, `plugin.test.ts`: raised default `sleepAfter` from 10m to
1h, mirroring the E2B 1h default, and added a regression test asserting
the acquire-lease request body sends `sleepAfter: "1h"` when not
overridden.

## Verification

- `pnpm --filter @paperclipai/plugin-e2b test`
- `pnpm --filter @paperclipai/plugin-cloudflare-sandbox test`
- Locally cherry-picked the `--no-xattrs` fix onto master and confirmed
end-to-end via a real PAPA-381-style heartbeat-driven E2B run that the
workspace upload now extracts cleanly on Linux. The user (board
operator) tested this on master and reported "Ok, that worked."
- Manual reviewer steps: trigger an E2B heartbeat from a macOS host
(this is where the bsdtar xattr headers come from), confirm the
workspace tar extracts on the Linux sandbox side; run a long (>15 min)
Cloudflare sandbox flow and confirm no lost-lease/idle errors between
executes.

## Risks

- Low risk overall.
- `--no-xattrs` is widely supported by both macOS bsdtar and GNU tar
(Linux). Worst case it silently no-ops on a future host that doesn't
support it; in that case the existing failure mode reappears, it doesn't
introduce a new one.
- Raising default `timeoutMs` (E2B) and `sleepAfter` (Cloudflare) from
short values to 1h means sandboxes stay alive longer between executes by
default. This is the intended behavior — operators that want a tighter
idle window can still override via plugin config.
- E2B per-execute sandbox lifetime refresh adds a small API call per
execute; it is bounded by the same client that already handles execute
traffic, so no new dependencies or retry semantics.

## Model Used

- Claude (Anthropic), `claude-opus-4-7`, extended thinking enabled, tool
use enabled (file/grep/git tools and Paperclip control-plane API). Used
to diagnose the dual failure mode (workspace tar PAX xattr headers +
sandbox lifetime), write the fixes and tests, and drive the verification
loop with the board operator.

## 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
- [ ] If this change affects the UI, I have included before/after
screenshots (N/A — no UI changes)
- [x] I have updated relevant documentation to reflect my changes
- [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>
2026-05-22 13:34:11 -07:00

98 lines
3.5 KiB
TypeScript

import type { PaperclipPluginManifestV1 } from "@paperclipai/plugin-sdk";
const PLUGIN_ID = "paperclip.cloudflare-sandbox-provider";
const PLUGIN_VERSION = "0.1.0";
const manifest: PaperclipPluginManifestV1 = {
id: PLUGIN_ID,
apiVersion: 1,
version: PLUGIN_VERSION,
displayName: "Cloudflare Sandbox Provider",
description:
"First-party sandbox provider plugin that provisions Cloudflare sandboxes through an operator-deployed Worker bridge.",
author: "Paperclip",
categories: ["automation"],
capabilities: ["environment.drivers.register"],
entrypoints: {
worker: "./dist/worker.js",
},
environmentDrivers: [
{
driverKey: "cloudflare",
kind: "sandbox_provider",
displayName: "Cloudflare Sandbox",
description:
"Runs Paperclip sandbox environments through a Cloudflare Worker bridge backed by the Sandbox SDK and Durable Objects.",
configSchema: {
type: "object",
properties: {
bridgeBaseUrl: {
type: "string",
format: "uri",
description: "Base URL of the operator-deployed Cloudflare Worker bridge.",
},
bridgeAuthToken: {
type: "string",
format: "secret-ref",
description:
"Bearer token used by the provider plugin when calling the Cloudflare bridge. Pasted values are stored as company secrets.",
},
reuseLease: {
type: "boolean",
default: false,
description: "Reuse a sandbox by environment ID instead of creating one per run.",
},
keepAlive: {
type: "boolean",
default: false,
description: "Prevent Cloudflare from idling the container between requests.",
},
sleepAfter: {
type: "string",
default: "1h",
description:
"Idle timeout passed to getSandbox() on lease creation. Defaults to 1 hour so a fresh sandbox survives normal Claude/Codex heartbeats. Ignored when keepAlive is true.",
},
normalizeId: {
type: "boolean",
default: true,
description: "Lowercase and normalize sandbox IDs for operator-friendly naming.",
},
requestedCwd: {
type: "string",
default: "/workspace/paperclip",
description: "Workspace directory to create inside the sandbox lease.",
},
sessionStrategy: {
type: "string",
enum: ["named", "default"],
default: "named",
description: "Whether to run commands in a stable named session or the default session.",
},
sessionId: {
type: "string",
default: "paperclip",
description: "Named Cloudflare session ID used when sessionStrategy is named.",
},
timeoutMs: {
type: "number",
default: 300000,
description: "Default per-command timeout passed through to the bridge.",
},
bridgeRequestTimeoutMs: {
type: "number",
default: 30000,
description: "HTTP timeout for plugin-to-bridge requests.",
},
previewHostname: {
type: "string",
description: "Optional hostname reserved for future preview URL support.",
},
},
required: ["bridgeBaseUrl", "bridgeAuthToken"],
},
},
],
};
export default manifest;