l1-reviewer
The L1 Reviewer is the quality gate for all product specs at Headout before they reach Atish. Use this skill to review any PRD, spec, or requirements document for completeness, logical soundness, scenario coverage, metric clarity, and design coherence. Structured critique, not a polish pass. Rejects incomplete specs with specific, actionable failure reasons. A passing spec is ready for Atish. A failing spec returns to the PM with exactly what needs fixing. Trigger for: "review this PRD", "is this spec good enough", "L1 check", "review before I send to Atish", or whenever the Spec Writer finishes a draft. Checks both the LOGIC layer (scenario coverage, metric rigor, AC quality) and the DESIGN layer (design coherence, prototype alignment).
91
88%
Does it follow best practices?
Impact
99%
1.26xAverage score across 3 eval scenarios
Passed
No known issues
Evaluation results
100%
4%Reviewing a PRD for Search Ranking Improvements
Metrics and AC quality review
FAIL verdict
100%
100%
Blocking vs non-blocking separated
100%
100%
Unquantified metrics flagged
100%
100%
Measurement method missing
100%
100%
Guardrail metrics absent
100%
100%
AC format flagged
100%
100%
AC observable behavior
100%
100%
Anti-scope missing
100%
100%
Scope platform missing
100%
100%
Specific failure notes
100%
100%
Open questions lacking owners
66%
100%
Resubmit checklist present
66%
100%
Strengths acknowledged
100%
100%
100%
39%Reviewing a Mobile Checkout Redesign PRD
Scope integrity and scenario coverage
FAIL verdict
100%
100%
Anti-scope insufficient
83%
100%
Platform disambiguation missing
60%
100%
Logged-out user state missing
100%
100%
Empty state not defined
33%
100%
Boundary condition absent
12%
100%
Non-GIVEN/WHEN/THEN ACs flagged
77%
100%
Hidden assumption in scope
37%
100%
Open questions lack owners
0%
100%
Blocking vs non-blocking separated
28%
100%
Resubmit checklist present
100%
100%
Strengths acknowledged
16%
100%
Specific failure notes
100%
100%
Measurement window noted
100%
100%
99%
21%Reviewing a Wishlist Feature PRD
Design review layer completeness
Design layer reviewed
100%
100%
Component library reference flagged
0%
100%
UI states insufficient for designer
91%
100%
Interaction patterns absent
80%
100%
Edge case design descriptions missing
90%
90%
Mobile-first considerations checked
50%
100%
Logic layer strengths recognized
75%
100%
FAIL or PASS verdict present
100%
100%
Blocking vs non-blocking separated
100%
100%
Failure notes specific to design
100%
100%
Resubmit checklist present on FAIL
100%
100%
- Repository
- headout/pm-os-marketplace
- Commit
d8db811
- Evaluated
- Agent
- Claude Code
- Model
- Claude Sonnet 4.6
Table of Contents
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