Step 1
Add the Strata19 marketplace
Register the pinned Git marketplace used by the released plugin package.
codex plugin marketplace add https://github.com/jordanallen87/praetor.gitUse the same free local project layer from Codex CLI or Codex Desktop. Strata19 adds durable context, specifications, work, routines, approvals, checkpoints, and evidence to the harness; Desktop can also place the project pane beside the conversation.
Step 1
Register the pinned Git marketplace used by the released plugin package.
codex plugin marketplace add https://github.com/jordanallen87/praetor.gitStep 2
Adding a marketplace does not install its plugins. Install Strata19 explicitly, then restart the host so the version-keyed cache is reloaded.
codex plugin add strata19@strata19Step 3
In a Codex conversation, run /hooks and approve the Strata19 session-bind and done-gate definitions. Until approved, MCP tools still work but lifecycle binding and the completion gate remain inactive.
Step 4
Open the target repository and ask Strata19 to initialize the project. If the host does not advertise the correct MCP root, provide the repository path explicitly.
Confirm Codex reports the plugin installed, then make one real project call. The result should contain repository-derived evidence rather than a generic success message.
codex plugin list
Prompt: “Initialize this repository with Strata19, then show project status.”