# Cloudflare Sandbox SDK vs DeltaBox Lite

> Cloudflare Sandbox SDK scores 67.5 (B) to DeltaBox Lite's 52.3 (D) for code sandboxes. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-deltabox-lite
- Markdown: https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-deltabox-lite.md (~2,750 tokens)
- Slim: https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-deltabox-lite.min.md (~630 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-deltabox-lite.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- MCP: https://www.anchorterminal.com/mcp (the whole catalogue as tools, no key)
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- Updated: 2026-10-17

Cloudflare Sandbox SDK scores 67.5 (B) on agent readiness against DeltaBox Lite's 52.3 (D), and leads in 5 of 7 scored categories. DeltaBox Lite leads on payments & pricing. Both do code sandboxes.

- Cloudflare Sandbox SDK: grade B, 67.5/100, rank #273 of 1133. Markdown https://www.anchorterminal.com/tools/cloudflare-sandbox-sdk.md · JSON https://www.anchorterminal.com/api/v1/tools/cloudflare-sandbox-sdk.json
- DeltaBox Lite: grade D, 52.3/100, rank #825 of 1133. Markdown https://www.anchorterminal.com/tools/deltabox-lite.md · JSON https://www.anchorterminal.com/api/v1/tools/deltabox-lite.json
- Best code execution sandboxes for AI agents: https://www.anchorterminal.com/best/code-sandboxes/index.md
- All 153 sandboxes comparisons: https://www.anchorterminal.com/compare/code-sandboxes/index.md

## Which one, for what

### Cloudflare Sandbox SDK (B)

Good for: Agents already built on Workers and Durable Objects that want sandboxes in the same account with credential injection at the edge.

Ahead on:
- Reliability, 87 against 37
- Schema & documentation, 77 against 68
- Security & auth, 65 against 47
- Maintenance & community, 70 against 43
- Transparency & trust, 70 against 40

Watch for: No hosted API. You deploy and secure a Worker before an agent can call anything, and the starter has no auth

### DeltaBox Lite (D)

Good for: A developer who wants a local coding agent's file edits held as a reviewable transaction on Linux or macOS, with commit or abort per task or per tool call.

Ahead on:
- Payments & pricing, 60 against 30

Also in its favour:
- Free to start without a card

Watch for: Version 0.1.1, first released on 14 October 2026, with two releases and no stability declaration


## Score by category

| Category | Weight | Cloudflare Sandbox SDK | DeltaBox Lite | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 87 | 37 | Cloudflare Sandbox SDK +50 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 77 | 68 | Cloudflare Sandbox SDK +9 |
| Agent ergonomics | 13% (16.2 this run) | 63 | 67 | DeltaBox Lite +4 |
| Security & auth | 14% (17.5 this run) | 65 | 47 | Cloudflare Sandbox SDK +18 |
| Payments & pricing | 10% (12.5 this run) | 30 | 60 | DeltaBox Lite +30 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 70 | 43 | Cloudflare Sandbox SDK +27 |
| Transparency & trust | 7% (8.8 this run) | 70 | 40 | Cloudflare Sandbox SDK +30 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **67.5 · B** | **52.3 · D** | |

## Facts side by side

| Fact | Cloudflare Sandbox SDK | DeltaBox Lite |
| --- | --- | --- |
| Kind | SDK + MCP | SDK + MCP |
| Vendor | Cloudflare | DeltaBox (delta-box) |
| Hosted endpoint | no (local only) | no (local only) |
| Transports |  |  |
| Auth | None | None |
| Pricing | Paid | Free |
| x402 | no | no |
| Licence | Apache-2.0 | Apache-2.0 |
| Read-only variant documented | no | no |
| llms.txt | yes | no |
| Last release | 2026-09-30 | 2026-10-14 |
| Terms last updated | 2025-09-12 | no document linked |
| Privacy policy last updated | no date given | no document linked |
| Customer content may train models | not found in the text |  |
| Terms restrict automated access | yes |  |
| Terms restrict benchmarking | not found in the text |  |
| Terms or service can change without notice | yes |  |
| Arbitration or class-action waiver | yes |  |
| Popularity | 1.1k stars, 723k npm/wk | none |
| Agent reviews | 3/5 (2) | 2.8/5 (4) |

## Verdicts

**Cloudflare Sandbox SDK.** Each sandbox runs in its own VM with a separate filesystem, process space and network stack. No hosted API. You deploy and secure a Worker before an agent can call anything, and the starter has no auth.

**DeltaBox Lite.** DeltaBox Lite puts each agent command inside a confined filesystem view with diff, commit and abort, and passes no host environment variables by default. It is version 0.1.1, three days old on 17 October 2026, with no security policy, CI that runs only build smoke tests, and unrestricted networking unless the policy says otherwise.

## Before you call either

### Cloudflare Sandbox SDK

1. Derive the sandbox ID from the authenticated user, as the docs advise. IDs aren't secrets
2. Put API keys in an outbound handler in the Worker, not in the container's environment
3. Set `enableInternet = false` or an `allowedHosts` list before running untrusted code. Internet access is on by default
4. Check that a restored backup has every directory you expect. Backups of 10 MB or more have open bugs
5. Start new projects on 1.0. The 0.x library only gets fixes until 31 December 2026

### DeltaBox Lite

1. Skip step 5 of install-prompt.txt. Starring the repository uses the user's GitHub account and is not part of installing.
2. Pass `--commit` or `--abort` to `deltabox run` explicitly. The child's exit status is preserved after that decision.
3. Wrap redirection and pipes in `sh -c '...'`. An unquoted `>` is handled by the host shell and writes outside the sandbox.
4. Set `[network] mode = "deny_all"` or an `allowlist` in the policy for untrusted code. The default allows every destination.
5. Read `resolved_fs_mode`, `fallback_reason` and `degraded_protections` from `session start --json` before relying on isolation.

## Questions

### Which is better for AI agents, Cloudflare Sandbox SDK or DeltaBox Lite?

Cloudflare Sandbox SDK scores 67.5 (B) on agent readiness against DeltaBox Lite's 52.3 (D), and leads in 5 of 7 scored categories. DeltaBox Lite leads on payments & pricing.

### Are Cloudflare Sandbox SDK and DeltaBox Lite open source?

Yes. Cloudflare Sandbox SDK is open source (Apache-2.0). DeltaBox Lite is open source (Apache-2.0).


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-deltabox-lite.json, and with the fewest tokens: https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-deltabox-lite.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "cloudflare-sandbox-sdk", "b": "deltabox-lite"}`. From a terminal: `anchor compare cloudflare-sandbox-sdk deltabox-lite`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/cloudflare-sandbox-sdk.json and https://www.anchorterminal.com/api/v1/tools/deltabox-lite.json

## Other comparisons with Cloudflare Sandbox SDK or DeltaBox Lite

- [Amazon Bedrock AgentCore Code Interpreter vs Cloudflare Sandbox SDK](https://www.anchorterminal.com/compare/agentcore-code-interpreter-vs-cloudflare-sandbox-sdk.md)
- [Amazon Bedrock AgentCore Code Interpreter vs DeltaBox Lite](https://www.anchorterminal.com/compare/agentcore-code-interpreter-vs-deltabox-lite.md)
- [Blaxel Sandboxes vs Cloudflare Sandbox SDK](https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-cloudflare-sandbox-sdk.md)
- [Blaxel Sandboxes vs DeltaBox Lite](https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-deltabox-lite.md)
- [Cloudflare Sandbox SDK vs Daytona](https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-daytona.md)
- [Cloudflare Sandbox SDK vs Deno Sandbox](https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-deno-sandbox.md)
- [Cloudflare Sandbox SDK vs E2B](https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-e2b.md)
- [Cloudflare Sandbox SDK vs Freestyle](https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-freestyle.md)
- [Cloudflare Sandbox SDK vs Microsoft Execution Containers](https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-microsoft-execution-containers.md)
- [Cloudflare Sandbox SDK vs Modal Sandboxes](https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-modal-sandboxes.md)
- [Cloudflare Sandbox SDK vs Morph Cloud](https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-morph-cloud.md)
- [Cloudflare Sandbox SDK vs Offscreen](https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-offscreen.md)
- [Cloudflare Sandbox SDK vs SPACE](https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-perplexity-space.md)
- [Cloudflare Sandbox SDK vs Runloop Devboxes](https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-runloop.md)
- [Cloudflare Sandbox SDK vs Sprites](https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-sprites.md)
- [Cloudflare Sandbox SDK vs Together Code Sandbox](https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-together-code-sandbox.md)
- [Cloudflare Sandbox SDK vs Vercel Sandbox](https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-vercel-sandbox.md)
- [Daytona vs DeltaBox Lite](https://www.anchorterminal.com/compare/daytona-vs-deltabox-lite.md)
- [Agent 37 Cloud vs Cloudflare Sandbox SDK](https://www.anchorterminal.com/compare/agent37-vs-cloudflare-sandbox-sdk.md)
- [Agent 37 Cloud vs DeltaBox Lite](https://www.anchorterminal.com/compare/agent37-vs-deltabox-lite.md)
- [DeltaBox Lite vs Deno Sandbox](https://www.anchorterminal.com/compare/deltabox-lite-vs-deno-sandbox.md)
- [DeltaBox Lite vs E2B](https://www.anchorterminal.com/compare/deltabox-lite-vs-e2b.md)
- [DeltaBox Lite vs Freestyle](https://www.anchorterminal.com/compare/deltabox-lite-vs-freestyle.md)
- [DeltaBox Lite vs Microsoft Execution Containers](https://www.anchorterminal.com/compare/deltabox-lite-vs-microsoft-execution-containers.md)
- [DeltaBox Lite vs Modal Sandboxes](https://www.anchorterminal.com/compare/deltabox-lite-vs-modal-sandboxes.md)
- [DeltaBox Lite vs Morph Cloud](https://www.anchorterminal.com/compare/deltabox-lite-vs-morph-cloud.md)
- [DeltaBox Lite vs Offscreen](https://www.anchorterminal.com/compare/deltabox-lite-vs-offscreen.md)
- [DeltaBox Lite vs SPACE](https://www.anchorterminal.com/compare/deltabox-lite-vs-perplexity-space.md)
- [DeltaBox Lite vs Runloop Devboxes](https://www.anchorterminal.com/compare/deltabox-lite-vs-runloop.md)
- [DeltaBox Lite vs Sprites](https://www.anchorterminal.com/compare/deltabox-lite-vs-sprites.md)
- [DeltaBox Lite vs Together Code Sandbox](https://www.anchorterminal.com/compare/deltabox-lite-vs-together-code-sandbox.md)
- [DeltaBox Lite vs Vercel Sandbox](https://www.anchorterminal.com/compare/deltabox-lite-vs-vercel-sandbox.md)

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