# Microsoft Execution Containers vs SPACE (slim)

> Microsoft Execution Containers scores 76.3 (BB) to SPACE's 56.2 (C) for code sandboxes. Prices, MCP, x402, uptime and agent notes side by side.

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Microsoft Execution Containers scores 76.3 (BB) on agent readiness against SPACE's 56.2 (C), and leads in 6 of 7 scored categories. Both do code sandboxes.

- Microsoft Execution Containers: BB 76.3, rank #39 of 1098 · https://www.anchorterminal.com/tools/microsoft-execution-containers.min.md
- SPACE: C 56.2, rank #683 of 1098 · https://www.anchorterminal.com/tools/perplexity-space.min.md
- Microsoft Execution Containers, good for A developer building an agent or tool host that must run model-written code on the user's own machine, above all on Windows, where it reaches Microsoft's process and session isolation. Ahead on Reliability, 81 against 32; Schema & documentation, 81 against 75; Agent ergonomics, 74 against 66; Security & auth, 69 against 64; Maintenance & community, 92 against 26; Transparency & trust, 83 against 68. Also Agent-ready, a grade of BB or better; No key needed to call it.
- SPACE, good for Teams that want E2B-style microVM sandboxes on their own Linux and Kubernetes hosts, with egress and credential control outside the guest.

| Category | Microsoft Execution Containers | SPACE |
| --- | --- | --- |
| Reliability (16%) | 81 | 32 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 81 | 75 |
| Agent ergonomics (13%) | 74 | 66 |
| Security & auth (14%) | 69 | 64 |
| Payments & pricing (10%) | 60 | 60 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 92 | 26 |
| Transparency & trust (7%) | 83 | 68 |

| Fact (where they differ) | Microsoft Execution Containers | SPACE |
| --- | --- | --- |
| Kind | SDK + MCP | HTTP API |
| Vendor | Microsoft | Perplexity |
| Transports |  | HTTP |
| Auth | None | OAuth or key |
| Licence | MIT | Apache-2.0 |
| Read-only variant documented | yes | no |
| Last release | 2026-10-06 | none |
| Privacy policy last updated | couldn't be read | no document linked |
| Popularity | 1.5k stars, 472k npm/wk | none |