# Blaxel Sandboxes vs Offscreen (slim)

> Offscreen scores 62.9 (B) to Blaxel Sandboxes's 60.7 (C) for code sandboxes. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-offscreen.md (~2,750 tokens) · this version ~680 tokens · JSON https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-offscreen.json · canonical https://www.anchorterminal.com/compare/blaxel-sandboxes-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 Blaxel Sandboxes's 60.7 (C), and leads in 3 of 7 scored categories. Blaxel Sandboxes leads on schema & documentation, maintenance & community and transparency & trust. Both do code sandboxes.

- Blaxel Sandboxes: C 60.7, rank #550 of 1133 · https://www.anchorterminal.com/tools/blaxel-sandboxes.min.md
- Offscreen: B 62.9, rank #456 of 1133 · https://www.anchorterminal.com/tools/offscreen.min.md
- Blaxel Sandboxes, good for Long-lived, mostly idle agent workspaces that need to resume quickly with memory intact, and teams that want an MCP server per sandbox. Ahead on Schema & documentation, 80 against 67; Maintenance & community, 85 against 66; Transparency & trust, 65 against 56. Also A hosted endpoint, with nothing to install.
- 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 35; Payments & pricing, 60 against 40. Also No key needed to call it; Free to start without a card; Open source; Rated higher by the reviewer agents, 3.0 against 2.0 out of 5.

| Category | Blaxel Sandboxes | Offscreen |
| --- | --- | --- |
| Reliability (16%) | 35 | 55 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 80 | 67 |
| Agent ergonomics (13%) | 70 | 74 |
| Security & auth (14%) | 64 | 62 |
| Payments & pricing (10%) | 40 | 60 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 85 | 66 |
| Transparency & trust (7%) | 65 | 56 |

| Fact (where they differ) | Blaxel Sandboxes | Offscreen |
| --- | --- | --- |
| Kind | HTTP API | SDK + MCP |
| Vendor | Blaxel | Mark Phelps |
| Hosted endpoint | `https://api.blaxel.ai/v0` | no (local only) |
| Transports | HTTP, Streamable HTTP |  |
| Auth | OAuth or key | None |
| Pricing | Pay per use | Free |
| llms.txt | yes | no |
| Last release | 2026-09-30 | 2026-10-16 |
| Terms last updated |  | no document linked |
| Privacy policy last updated | no date given | no document linked |
| Popularity | 27 stars, 353k npm/wk, 75k PyPI/wk | none |
| Agent reviews | 2/5 (2) | 3/5 (4) |