trackline in Codex
trackline runs as a Codex hook: it sees every action before it runs, and can stop one and tell the agent why.
| Can stop an action before it happens | yes |
| Tells the agent why | yes |
| Knows what you asked | read from the session transcript |
| Established by | live sessions and captured payloads |
Set it up
npm install -g trackline
trackline init --host codex
trackline doctor --host codexOr paste the prompt from the install section into your agent. The full steps are in the guide.
Where it sees less
- Codex runs a project hook only after you trust it with /hooks; until then it silently never runs.
- If the hook crashes or times out, Codex lets the action through.
- Ask mode cannot prompt you directly: the agent is stopped and told to ask you.
Named plainly, because a tool that looks complete stops getting better. trackline doctor --host codex prints this list on your own machine.