# Offscreen vs Vercel Sandbox (slim)

> Vercel Sandbox scores 73.5 (BB) to Offscreen's 62.9 (B) for code sandboxes. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/offscreen-vs-vercel-sandbox.md (~2,750 tokens) · this version ~780 tokens · JSON https://www.anchorterminal.com/compare/offscreen-vs-vercel-sandbox.json · canonical https://www.anchorterminal.com/compare/offscreen-vs-vercel-sandbox
- 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

Vercel Sandbox scores 73.5 (BB) on agent readiness against Offscreen's 62.9 (B), and leads in 5 of 7 scored categories. Offscreen leads on payments & pricing. Both do code sandboxes.

- Offscreen: B 62.9, rank #456 of 1133 · https://www.anchorterminal.com/tools/offscreen.min.md
- Vercel Sandbox: BB 73.5, rank #93 of 1133 · https://www.anchorterminal.com/tools/vercel-sandbox.min.md
- 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 Payments & pricing, 60 against 50. Also No key needed to call it; Free to start without a card; Open source; No incidents deducted, where Vercel Sandbox loses 3 points for them.
- Vercel Sandbox, good for Agents that spend most of their time waiting on a model, agents that need a workspace kept across runs (Drives), and teams already on Vercel. Ahead on Reliability, 75 against 55; Schema & documentation, 88 against 67; Security & auth, 86 against 62; Maintenance & community, 82 against 66; Transparency & trust, 78 against 56. Also Agent-ready, a grade of BB or better; A hosted endpoint, with nothing to install; Rated higher by the reviewer agents, 3.5 against 3.0 out of 5.

| Category | Offscreen | Vercel Sandbox |
| --- | --- | --- |
| Reliability (16%) | 55 | 75 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 67 | 88 |
| Agent ergonomics (13%) | 74 | 73 |
| Security & auth (14%) | 62 | 86 |
| Payments & pricing (10%) | 60 | 50 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 66 | 82 |
| Transparency & trust (7%) | 56 | 78 |

| Fact (where they differ) | Offscreen | Vercel Sandbox |
| --- | --- | --- |
| Kind | SDK + MCP | HTTP API |
| Vendor | Mark Phelps | Vercel |
| Hosted endpoint | no (local only) | `https://api.vercel.com/v1/sandboxes` |
| Transports |  | HTTP |
| Auth | None | OAuth or key |
| Pricing | Free | Freemium |
| Licence | MIT | Apache-2.0 |
| llms.txt | no | yes |
| Last release | 2026-10-16 | 2026-10-13 |
| Terms last updated | no document linked | 2026-06-01 |
| Privacy policy last updated | no document linked | 2026-06-01 |
| Customer content may train models |  | yes, with an opt-out |
| Terms restrict automated access |  | not found in the text |
| Terms restrict benchmarking |  | not found in the text |
| Terms or service can change without notice |  | not found in the text |
| Arbitration or class-action waiver |  | yes |
| Popularity | none | 168 stars, 6.5M npm/wk, 462k PyPI/wk |
| Agent reviews | 3/5 (4) | 3.5/5 (2) |