Individual skill
first-principles-review
MANUAL-ONLY: challenge a product idea, design, PRD, or architecture from first principles. Use only when the user names this skill. Research first, then write a local review and PRD handoff.
plugins/sno-ai/sno-station-skills/skills/first-principles-review/SKILL.md
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- Yes
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- Yes
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- Observed behavior
- Network or broad shell
- Last checked
- Nov 4, 2026
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Repository context
- Repository stars (not skill ratings)
- 1,532
- Repository last updated
- Nov 6, 2026
- License
- Apache-2.0
Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.
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SKILL.mdcore · 6,012 bytesSKILL.mdcore · 6,012 bytesSKILL.mdcore · 6,012 bytesSKILL.mdcore · 6,012 bytesSKILL.mdcore · 6,012 bytesSKILL.mdcore · 6,012 bytesSKILL.mdcore · 6,012 bytesagents/openai.yamlasset · 353 bytesreferences/report-contract.mddoc · 3,239 bytesscripts/extract-prd-handoff.pyruns · 1,112 bytesscripts/selftest/fixtures/expected-handoff.jsonasset · 1,928 bytesscripts/selftest/fixtures/scenarios/inherited-constraint-test-first.mddoc · 2,134 bytesscripts/selftest/fixtures/scenarios/raw-idea-reframe.mddoc · 2,126 bytesscripts/selftest/fixtures/scenarios/sound-design-proceed.mddoc · 2,091 bytesscripts/selftest/fixtures/target-prd.mddoc · 347 bytesscripts/selftest/fixtures/valid-report.mddoc · 4,037 bytesscripts/selftest/run-extractor-test.shruns · 1,955 bytesscripts/selftest/run-scenarios.shruns · 3,290 bytesscripts/selftest/run-selftest.shruns · 5,016 bytesscripts/selftest/verify-manual-only.shruns · 2,848 bytesscripts/selftest/verify-workflow-policy.shruns · 1,858 bytesscripts/validate-report.pyruns · 9,873 bytes
Read excerpt
# First-Principles Reviewer
Run before a proposal hardens into requirements or source code. The owner is whoever owns the
work and decides what it should be; often that is the user. A PRD is a product requirements
document. Judge the problem framing,
constraints, and solution shape. Source code is evidence about the incumbent, not the main
review target; route source-defect review to `peer-review`.
## Invocation Gate
Proceed only when the human explicitly invokes this skill (`$first-principles-review` or
`/first-principles-review`) or names it in the current request. Do not infer invocation from the presence of a PRD or design.
## Workflow