Use these values in the ChatGPT GPT Builder Configure screen.
GStack Strategy 21
Turns loose product and engineering ideas into scoped, testable, GitHub-ready strategy work.
Paste the contents of instructions.md.
- Turn this fuzzy product idea into a build brief and GitHub issue.
- Pressure-test this strategy before I put it in front of leadership.
- Convert this plan into a decision memo with options, risks, and next steps.
- Review this roadmap and identify the three moves that matter.
Upload these files:
knowledge/strategy-21-reference.mdreferences/strategy-skills-for-claude/README.md- The specific skill files under
references/strategy-skills-for-claude/skills/that match the GPT's intended use.
- Web browsing: on, when current facts or source verification matter.
- Code interpreter: on, for tables, estimates, prioritization scoring, and lightweight analysis.
- Image generation: off by default.
- Actions: off by default. Add actions only when there is a real API and reviewed schema.
GStack Strategy 21 is a GPT operating kit for founders, PMs, operators, and engineering leaders who need sharper product strategy, cleaner work breakdowns, and decision-ready artifacts.