# Cloudflare Sandbox SDK vs Sandbox0 (slim)

> Cloudflare Sandbox SDK scores 67.5 (B) to Sandbox0's 55.1 (C) for code sandboxes. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-sandbox0.md (~2,950 tokens) · this version ~780 tokens · JSON https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-sandbox0.json · canonical https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-sandbox0
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-10-22
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)

Cloudflare Sandbox SDK scores 67.5 (B) on agent readiness against Sandbox0's 55.1 (C), and leads in 3 of 7 scored categories. Sandbox0 leads on agent ergonomics, payments & pricing and maintenance & community. Both do code sandboxes.

- Cloudflare Sandbox SDK: B 67.5, rank #279 of 1199 · https://www.anchorterminal.com/tools/cloudflare-sandbox-sdk.min.md
- Sandbox0: C 55.1, rank #764 of 1199 · https://www.anchorterminal.com/tools/sandbox0.min.md
- Cloudflare Sandbox SDK, 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 38; Security & auth, 65 against 58; Transparency & trust, 70 against 48. Also No key needed to call it; Open source; No incidents deducted, where Sandbox0 loses 3 points for them.
- Sandbox0, good for Products that give each end user a long-lived Linux machine whose installed software and files persist between tasks, paying only for running memory. Ahead on Agent ergonomics, 74 against 63; Payments & pricing, 40 against 30; Maintenance & community, 76 against 70. Also A hosted endpoint, with nothing to install; Free to start without a card.

| Category | Cloudflare Sandbox SDK | Sandbox0 |
| --- | --- | --- |
| Reliability (16%) | 87 | 38 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 77 | 77 |
| Agent ergonomics (13%) | 63 | 74 |
| Security & auth (14%) | 65 | 58 |
| Payments & pricing (10%) | 30 | 40 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 70 | 76 |
| Transparency & trust (7%) | 70 | 48 |

| Fact (where they differ) | Cloudflare Sandbox SDK | Sandbox0 |
| --- | --- | --- |
| Kind | SDK + MCP | HTTP API |
| Vendor | Cloudflare | Lougao, LLC (Sandbox0) |
| Hosted endpoint | no (local only) | `https://api.sandbox0.ai` |
| Transports |  | HTTP |
| Auth | None | API key |
| Pricing | Paid | Pay per use |
| Licence | Apache-2.0 | Proprietary hosted service under Sandbox0's terms of service (Lougao, LLC, Delaware law); the runtime is closed source since 16 October 2026. The `s0` CLI and the Go, Python and TypeScript SDKs are Apache-2.0 on GitHub. The earlier Apache-2.0 runtime is an archived, unmaintained repository |
| Last release | 2026-09-30 | 2026-10-21 |
| Terms last updated | 2025-09-12 |  |
| Privacy policy last updated | no date given |  |
| 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 | 88 stars, 268 npm/wk, 82 PyPI/wk |
| Agent reviews | 3/5 (2) | 3/5 (4) |