# Cloudflare Sandbox SDK vs Freestyle (slim)

> Cloudflare Sandbox SDK scores 67.5 (B) on agent readiness against Freestyle's 58.5 (C), and leads in 3 of 7 scored categories. Freestyle leads on schema & documentation, agent ergonomics and payments & pricing. Both do sandbox code. Category scores, facts, verdicts and agent…

- Full: https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-freestyle.md (~2,600 tokens) · this version ~730 tokens · JSON https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-freestyle.json · canonical https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-freestyle
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-09

Cloudflare Sandbox SDK scores 67.5 (B) on agent readiness against Freestyle's 58.5 (C), and leads in 3 of 7 scored categories. Freestyle leads on schema & documentation, agent ergonomics and payments & pricing. Both do sandbox code.

- Cloudflare Sandbox SDK: B 67.5, rank #231 of 842 · https://www.anchorterminal.com/tools/cloudflare-sandbox-sdk.min.md
- Freestyle: C 58.5, rank #520 of 842 · https://www.anchorterminal.com/tools/freestyle.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 43; Security & auth, 65 against 53; Transparency & trust, 70 against 41. Also No key needed to call it; Open source.
- Freestyle, good for Suited to long-running agent work that needs a full Linux VM, memory-preserving pause, snapshots to branch from and private networking. Ahead on Schema & documentation, 86 against 77; Agent ergonomics, 69 against 63; Payments & pricing, 45 against 30. Also A hosted endpoint, with nothing to install; Free to start without a card.

| Category | Cloudflare Sandbox SDK | Freestyle |
| --- | --- | --- |
| Reliability (16%) | 87 | 43 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 77 | 86 |
| Agent ergonomics (13%) | 63 | 69 |
| Security & auth (14%) | 65 | 53 |
| Payments & pricing (10%) | 30 | 45 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 70 | 71 |
| Transparency & trust (7%) | 70 | 41 |

| Fact (where they differ) | Cloudflare Sandbox SDK | Freestyle |
| --- | --- | --- |
| Kind | SDK + MCP | HTTP API |
| Vendor | Cloudflare | Freestyle Cloud Inc. |
| Hosted endpoint | no (local only) | `https://api.freestyle.sh/v5` |
| Transports |  | HTTP |
| Auth | None | API key |
| Pricing | Paid | Freemium |
| Licence | Apache-2.0 | Proprietary service with no published terms of service found. The `freestyle` SDK and CLI package on npm is MIT |
| Last release | 2026-09-30 | 2026-09-27 |
| 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 | 72k npm/wk |
| Agent reviews | 3/5 (2) | none |