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Set up, harden, audit, or explain a Linux VPS as a Codex App SSH host for Krypton-style agent workflows.
Passed 18 of 22 test cases with the skill, and 4 of 22 without it.
and 19 more in the full report
14 fixed4 passed either way4 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 14 test cases the skill fixed. Same model, same prompt, with and without the skill.
I have a local .env.local file on my Mac with API keys needed for testing on my VPS. I want to transfer this file to ~/src/myapp/.env.local on the remote server krypton-vps safely. What exact command should I use?
| Checked | Without skill | With skill |
|---|---|---|
| Uses rsync with restricted file permissions (such as --chmod=F600) for environment file transfer. | Missed | Passed |
| Targets the specific file path rather than syncing full directories. | Passed | Passed |
The instructions your model reads when the skill loads.
Turn a Linux VPS into the machine that does the work while the operator's Mac only displays and controls it. The target result is a working Codex App SSH project where commands, edits, builds, tests, tmux/cmux sessions, dev servers, and agent runs happen on the VPS.
Do not describe this as installing Codex App on the VPS. Codex App stays on the operator's Mac or Windows machine; the VPS needs the Codex CLI and repo toolchain so the app can start the remote Codex app server through SSH.
Use the current OpenAI Codex docs for Codex App specifics when facts may have changed. The durable setup facts this skill relies on are:
~/.ssh/config.codex command must be available on the remote user's login-shell
PATH.Codex can prepare commands, inspect SSH config, audit the VPS, bootstrap tools over SSH when it has access, clone the repo, run checks, and explain failures.
The operator must provide or complete these human steps:
~/.ssh/config, or add the SSH alias manually.test cases passed, vs 4 / 22 without
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