Agent 37 Cloud vs DeltaBox Lite

Agent 37 Cloud

Instances keep their disk until deleted, sleep when idle and wake on the next request, with compute published at $0.80 a vCPU-month and stable error codes on both APIs. The product launched on 29 September 2026. No status page, OpenAPI file, SDK library or published rate limits were found, and the starter credit needs a card.

DeltaBox Lite

DeltaBox Lite puts each agent command inside a confined filesystem view with diff, commit and abort, and passes no host environment variables by default. It is version 0.1.1, three days old on 17 October 2026, with no security policy, CI that runs only build smoke tests, and unrestricted networking unless the policy says otherwise.

Agent 37 Cloud

1. Send the key as Authorization: Bearer to api.agent37.com and as X-Agent37-Key to the instance URL. The Bearer form on instance URLs is deprecated
2. Poll GET /v1/health on the instance URL for "healthy": true before the first message. status: running only means the machine is up
3. Check whether error is a string before reading error.code. Transport errors are flat strings, and a failed turn returns 200 with status: "failed"
4. Don't blindly retry an exec that timed out after 13 minutes. The command keeps running, so a retry starts a second copy
5. Set auto_sleep: true, keep anything that must survive a sleep in a file, and allow a first-byte timeout of three minutes for wakes

DeltaBox Lite

1. Skip step 5 of install-prompt.txt. Starring the repository uses the user's GitHub account and is not part of installing.
2. Pass --commit or --abort to deltabox run explicitly. The child's exit status is preserved after that decision.
3. Wrap redirection and pipes in sh -c '...'. An unquoted > is handled by the host shell and writes outside the sandbox.
4. Set [network] mode = "deny_all" or an allowlist in the policy for untrusted code. The default allows every destination.
5. Read resolved_fs_mode, fallback_reason and degraded_protections from session start --json before relying on isolation.