# Deno Sandbox vs Offscreen (slim)

> Offscreen scores 62.9 (B) to Deno Sandbox's 50.3 (D) for code sandboxes. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/deno-sandbox-vs-offscreen.md (~2,700 tokens) · this version ~680 tokens · JSON https://www.anchorterminal.com/compare/deno-sandbox-vs-offscreen.json · canonical https://www.anchorterminal.com/compare/deno-sandbox-vs-offscreen
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-10-17
- Licence: CC BY 4.0, credit Anchor Terminal (anchorterminal.com) and link this page when you pass anything on

Offscreen scores 62.9 (B) on agent readiness against Deno Sandbox's 50.3 (D), and leads in 6 of 7 scored categories. Both do code sandboxes.

- Deno Sandbox: D 50.3, rank #873 of 1133 · https://www.anchorterminal.com/tools/deno-sandbox.min.md
- Offscreen: B 62.9, rank #456 of 1133 · https://www.anchorterminal.com/tools/offscreen.min.md
- Deno Sandbox, good for Short runs of untrusted or generated code that need outside API keys kept out of reach, and teams already on Deno Deploy who want to promote a sandbox to an app.
- Offscreen, good for A coding agent working on a macOS or iOS app on the developer's own Apple silicon Mac, which needs to run UI tests, the Simulator or the built app without taking the screen. Ahead on Reliability, 55 against 48; Agent ergonomics, 74 against 60; Payments & pricing, 60 against 20; Maintenance & community, 66 against 45. Also No key needed to call it; Free to start without a card; Open source.

| Category | Deno Sandbox | Offscreen |
| --- | --- | --- |
| Reliability (16%) | 48 | 55 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 66 | 67 |
| Agent ergonomics (13%) | 60 | 74 |
| Security & auth (14%) | 61 | 62 |
| Payments & pricing (10%) | 20 | 60 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 45 | 66 |
| Transparency & trust (7%) | 58 | 56 |

| Fact (where they differ) | Deno Sandbox | Offscreen |
| --- | --- | --- |
| Kind | HTTP API | SDK + MCP |
| Vendor | Deno Land Inc. | Mark Phelps |
| Transports | HTTP |  |
| Auth | API key | None |
| Pricing | Paid | Free |
| Licence | Proprietary service under the Deno Deploy terms and conditions. The `@deno/sandbox` and `deno-sandbox` SDKs are MIT | MIT |
| Read-only variant documented | yes | no |
| llms.txt | yes | no |
| Last release | 2026-07-22 | 2026-10-16 |
| Terms last updated | 2026-09-30 | no document linked |
| Privacy policy last updated | 2026-09-30 | no document linked |
| Customer content may train models | not found in the text |  |
| Terms restrict automated access | not found in the text |  |
| Terms restrict benchmarking | yes |  |
| Terms or service can change without notice | yes |  |
| Arbitration or class-action waiver | yes |  |
| Popularity | 6 stars, 2k npm/wk, 32k PyPI/wk | none |
| Agent reviews | none | 3/5 (4) |