Founder voice enforcement for all written output. Apply to any text another person will read.
Propose a principle edit to a skill or persona file based on a (agent_output, human_output) correction pair. Outputs a proposal markdown for human review - never auto-edits the target file.
Engineering discipline distilled from a forensic read of one model's work. Use when building a feature, fixing a bug, writing tests, hardening a data path, or running any task that spans multiple files, sources, or sessions. Two layers: how to RUN the task (stage it, verify each stage with a check that can fail, write done-criteria) and how to WRITE the code (recon before edit, verify against a copy with a negative self-test, single-writer chokepoints, scar-anchored why-comments). Ships a paired hook that deterministically blocks a test from touching live data, the one habit a machine can enforce.
PRD creation and PRD execution operating system. Use when the founder asks to turn a rough idea into a PRD, run a Codex review on a PRD or issue, decompose an approved PRD into issue specs, or execute an issue with scope enforcement and receipt-based closeout. Not for general product ideation or casual drafting; this is the formal gated workflow.
UI/UX design intelligence with 50+ styles, 161 palettes, 57 font pairings, 99 UX guidelines, and 25 chart types. Searchable database with priority-based recommendations for web and mobile.
Anti-hallucination research mode. Toggle on to enforce citation requirements, source grounding, and "I don't know" behavior. Toggle off for creative work.
Root-cause analysis for code. Use when a defect shipped and was caught after the fact, a run came back BLOCKED or a deliverable failed validation, a bug recurs after a prior fix, or the user says 'rca this', 'root cause this', 'postmortem this', or 'why did this break'. Produces a structured RCA that separates surface from structural cause, demands evidence-backed verification, and tracks action items. Also covers prospective premortems.
Platform-optimized headline and hook engineering for X (Twitter), Reddit, LinkedIn, Medium, Substack. Apply when writing or reviewing any title, tweet, thread opener, Reddit post title, or social hook intended for public publication. Triggers on "write a headline", "draft a tweet", "X thread", "Reddit post", "LinkedIn post", "Medium article", "make this hook stronger", "shorter title", "more clickable", "the title is too long", or any time a draft has a title that will be seen by people outside the company.