Who offers it

Part of Built-in agents, which explains why it matters.

Fully: Agent 37, Blaxel, boxd, Cloudflare Sandbox, Daytona, E2B, Modal, Runtime, Tensorlake and Vercel Sandbox. Not at all: Boat, InstaBox, Lizard, Morph, Sandboxer and Sprites.

  • Documented as the machine for Cursor self-hosted machines and Claude Managed Agents.

    docs-confirmed “Cursor Self-Hosted Machines on Agent37” Source

  • Tutorials cover Claude Managed Agents and the OpenAI Agents API running on Blaxel.

    docs-confirmed “Self-host the Claude Managed Agents (CMA) sandbox execution layer on Blaxel while Anthropic runs the agent loop” Source

  • boxdYes

    Pages for Claude Managed Agents and the OpenAI Agents API, both in beta on the vendor side.

    docs-confirmed “OpenAI runs the Codex harness. Every command runs inside a boxd machine you control.” Source

  • One page names Devin, Cursor, Claude Managed Agents and the OpenAI Agents API.

    docs-confirmed “Devin, Cursor, Claude Managed Agents, and the OpenAI Agents API run their agent loop in their own service.” Source

  • First-party guides cover Cursor and Devin alongside Claude Code and others.

    docs-confirmed “Run Claude Code in a Daytona Sandbox via CLI” Source

  • E2BYes

    Guides cover Claude Managed Agents, Devin Outposts, Devin and the OpenAI Agents API.

    docs-confirmed “Use E2B as the sandbox runtime for Claude Managed Agents self-hosted environments.” Source

  • A documented adapter for Claude Managed Agents, plus framework adapters.

    docs-confirmed “Use Runtime with your AI framework” Source

  • Pages for Cursor Cloud Agents, Claude Managed Agents and Devin Outposts.

    docs-confirmed “Use Tensorlake sandboxes as the self-hosted machines for Cursor Cloud Agents.” Source

  • Ecosystem pages for Cursor, Devin and the OpenAI Agents API.

    docs-confirmed “Cursor Cloud Agents on Self-Hosted Machines” Source

  • Note: No page documents another platform's cloud agents using Boat as their machine.

    Its integrations are Harbor and Eve adapters, which are evaluation frameworks.

    inferred “Run Harbor agent trials and evals on Boat sandboxes” Source

  • Note: No page documents another platform's cloud agents using InstaBox.

    It offers SSH, exec and a desktop for your own agent.

    inferred “Every body is JSON.” Source

  • Note: No page documents another platform's cloud agents using Lizard.

    inferred “Choose a template from the current catalog” Source

  • Note: No page documents another platform's cloud agents using Morph.

    inferred “Devboxes expose a full tmux API” Source

  • Note: Its agent pages cover SDKs and frameworks, not another platform's hosted cloud agents.

    inferred “installed in every sandbox.” Source

  • Note: Its ecosystem lists coding tools, not another platform's cloud agents.

    inferred “Official plugins for every serious coding agent” Source

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