# Agent 37 Cloud vs Microsoft Execution Containers (slim)

> Microsoft Execution Containers scores 76.3 (BB) on agent readiness against Agent 37 Cloud's 46.1 (D), and leads in every scored category. Both do sandbox persist. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/agent37-vs-microsoft-execution-containers.md (~2,500 tokens) · this version ~780 tokens · JSON https://www.anchorterminal.com/compare/agent37-vs-microsoft-execution-containers.json · canonical https://www.anchorterminal.com/compare/agent37-vs-microsoft-execution-containers
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-08

Microsoft Execution Containers scores 76.3 (BB) on agent readiness against Agent 37 Cloud's 46.1 (D), and leads in every scored category. Both do sandbox persist.

- Agent 37 Cloud: D 46.1, rank #650 of 722 · https://www.anchorterminal.com/tools/agent37.min.md
- Microsoft Execution Containers: BB 76.3, rank #34 of 722 · https://www.anchorterminal.com/tools/microsoft-execution-containers.min.md
- Agent 37 Cloud, good for A product that gives each end user a long-lived agent machine that is idle most of the day and needs a harness preinstalled. Also A hosted endpoint, with nothing to install.
- 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 27; Schema & documentation, 81 against 57; Agent ergonomics, 74 against 60; Security & auth, 69 against 49; Payments & pricing, 60 against 20; Maintenance & community, 92 against 65; Transparency & trust, 83 against 56. Also Agent-ready, a grade of BB or better; No key needed to call it; Free to start without a card; Open source.

| Category | Agent 37 Cloud | Microsoft Execution Containers |
| --- | --- | --- |
| Reliability (16%) | 27 | 81 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 57 | 81 |
| Agent ergonomics (13%) | 60 | 74 |
| Security & auth (14%) | 49 | 69 |
| Payments & pricing (10%) | 20 | 60 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 65 | 92 |
| Transparency & trust (7%) | 56 | 83 |

| Fact (where they differ) | Agent 37 Cloud | Microsoft Execution Containers |
| --- | --- | --- |
| Kind | HTTP API | SDK + MCP |
| Vendor | Agent 37 Inc. | Microsoft |
| Hosted endpoint | `https://api.agent37.com/v1` | no (local only) |
| Transports | HTTP |  |
| Auth | API key | None |
| Pricing | Pay per use | Free |
| Licence | Proprietary service under Agent 37's terms of service. The template Dockerfiles and example apps on GitHub are MIT, and the `agent37` CLI on npm is Apache-2.0 | MIT |
| Read-only variant documented | no | yes |
| llms.txt | yes | no |
| Last release | 2026-10-05 | 2026-10-06 |
| Terms last updated | 2026-08-04 | no document linked |
| Privacy policy last updated | 2026-09-01 | couldn't be read |
| Customer content may train models | not found in the text |  |
| 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 | not found in the text |  |
| Popularity | 74 npm/wk | 1.5k stars, 472k npm/wk |