Principal Engineer OS — Design skill for Claude Code
A reusable agent skill that brings principal-engineer judgment to software design, implementation, code review, debugging, refactoring, migrations, and production readiness—with explicit attention to.
How to install Principal Engineer OS
This entry records only its repository, not the path inside it, so there is no
exact command to give. Open YourAKShaw/principal-engineer-os and copy the folder into
~/.claude/skills/, or the file into ~/.claude/agents/.
What Principal Engineer OS does
A reusable agent skill that brings principal-engineer judgment to software design, implementation, code review, debugging, refactoring, migrations, and production readiness—with explicit attention to correctness, security, reliability, architectural trade-offs, and operational cost.
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README
🧭 Principal Engineer OS
[](https://hol.org/registry/plugins/yourakshaw%2Fprincipal-engineer-os)
**Principal-engineer judgment for AI-assisted software engineering.**
Build with explicit trade-offs, protect the boundaries that matter, and verify what you deliver.
[](SKILL.md) [](LICENSE) [](workflows/) [](.github/CONTRIBUTING.md)
[Explore the skill](SKILL.md) · [Engineering constitution](references/constitution.md) · [Contribute](.github/CONTRIBUTING.md) · [Get help](.github/SUPPORT.md) · [Security](SECURITY.md)
Engineering beyond the happy path
Working code is one part of the job. A retry can duplicate a payment. An authenticated request can still expose another tenant's data. A schema change can pass locally and break an older worker. A proposed rollback can become unsafe after data has changed.
**Principal Engineer OS (PEOS)** is an agent skill that brings those questions into design, implementation, review, and operations. It gives your agent a shared engineering constitution, focused workflows, domain references, and reusable decision artifacts to reason about correctness, security, reliability, and the cost of change.
Its guiding principle is simple:
Deliver the smallest defensible solution that meets the requested outcome, protects its invariants, and remains affordable to operate and evolve.
That means a typo gets a focused edit. A payment integration gets scrutiny of idempotency, uncertain outcomes, reconciliation, and r
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