ompstack

pstack by Lauren Tan, packaged for Oh My Pi (OMP).

pstack is a set of Cursor skills for deep-first agent work. This package ships the 33 that OMP lacks, unchanged: poteto-mode and its playbooks, how, why, architect, arena, interrogate, swarm, figure-it-out, show-me-your-work, no-comments, benchmark-checklist, technical-writing, unslop, typescript-best-practices, and 19 principle-* skills. It adds a thin OMP layer:

• skills/pstack-omp: the adapter. It maps Cursor tools, subagent fields, model roles, and paths to OMP, and sets the run policy (OMP reply style, local autonomy, explicit approval for remote-ref changes, no remote deploys or data writes).
• skills/advisor: a cross-model consultation before substantial implementation, adapted from Cursor's Advisor workflow.
• agents/: pstack role profiles, advisor profiles, and pstack's comment-sicko. Model selection uses OMP roles.
• rules/pstack.md: an always-on rule that points every session at the adapter.

UPSTREAM records the imported pstack baseline and selective ports. It does not claim that local skills or the whole package match one upstream revision.

See CHANGELOG.md for plugin release changes.

Install

omp plugin install github:ChiThang-50Cent/ompstack

Git installs are user-scoped: every project sees the skills, agents, and rule. To load the package for one project only, clone it and list the clone in that project's .omp/config.yml:

extensions: ["/path/to/ompstack"]

For a single session, use omp -e /path/to/ompstack.

Configure

pstack's agents use OMP's built-in model roles. Set them in ~/.omp/agent/config.yml:

modelRoles:
  task: <code model>       # poteto-agent, pstack-worker, pstack-panel-b, advisor-task
  slow: <judgment model>   # poteto-judgment, pstack-judge, pstack-panel-a, advisor-slow
  advisor: <advisor model> # advisor-role

Point slow and task at different model families so the arena and interrogate panels get independent model perspectives. The arena cross-judge reads cfg://modelRoles to pick the seat whose family differs from its own.

pstack runs parallel workers in their own worktrees. Enable OMP task isolation, and keep apply: false so worker changes come back for review instead of landing on your checkout:

task:
  isolation:
    enabled: true
    apply: false

Use

Start a run with /skill:poteto-mode <what you want>. Other entry points: /skill:how, /skill:why, /skill:architect, /skill:arena, /skill:interrogate.

pstack skills are hidden from the model's skill list (disable-model-invocation), so they run only when invoked or when another pstack skill calls them.

For a substantial implementation, advisor consults a read-only agent from a different model family before changes. Configure advisor above to a different family from the active session model. The skill prefers that role, then checks slow and task. You can also invoke /skill:advisor for an explicit consultation. If the actual model identities cannot be verified, the workflow reports that the consultation is unverified.

Follow-up questions reuse the same agent when available and send only new evidence. Provider prompt-cache reuse is not guaranteed.

Differences from Cursor

• 22 pstack skills are not shipped. Five duplicate rules OMP's system prompt already enforces (tdd, principle-prove-it-works, principle-test-behavior-not-implementation, principle-migrate-callers-then-delete-legacy-apis, principle-never-block-on-the-human); principle-guard-the-context-window conflicts with OMP's no-budget rule; the rest are standalone commands no poteto-mode playbook uses, or Cursor setup (setup-pstack, poteto-help). The adapter's "Skills not shipped" table maps each one to its OMP replacement.
• Model choice comes from modelRoles, not pstack-models.mdc.
• Cursor Automations, Bugbot setup, cloud agents, and /deslop are not available. The agent skips those steps with a Skipped in OMP: line.
• Local-only experiments are allowed even when a script calls them "deploy". Before each push, merge, or other remote-ref change, the agent shows the exact command and remote/ref scope, asks for explicit approval, and waits. Approval applies only to that command and scope. Deploys to non-local environments and writes/deletes against non-local databases or data services remain forbidden; skipped PR steps end with the exact command for you to run.

Update

Review changes in cursor/plugins/pstack against the baseline in UPSTREAM. Port only the changes this package needs. Do not replace the entire skills/ tree.

For each update:

1. Review upstream skill, playbook, agent, and license changes.
2. Choose which changes to port. Record omitted skills in the adapter's "Skills not shipped" table.
3. Preserve local pstack-omp, agent profiles, and rules. Map new Cursor tools or roles in the adapter.
4. Record the source revision and affected paths in UPSTREAM. Keep the imported baseline when applying a selective port.
5. Review the resulting diff and verify affected workflows in a fresh omp -e . session before committing.

Retain LICENSE.pstack and any attribution required by the material you port.

After a new commit lands on GitHub, run omp plugin upgrade ompstack.

License

MIT for this package (LICENSE). pstack is MIT, copyright Lauren Tan (LICENSE.pstack). Cursor Advisor is MIT, copyright Cursor (LICENSE.advisor).