kevincui1034
UserCost & Margin Analysis — an installable Claude Code skill/plugin that audits a project's unit economics: inventories paid surfaces, models pricing, and computes per-plan / per-user margins with redlines flagged.
Categories
Indexed Skills (2)
cost-analysis
Use this skill when the user asks for a cost audit, margin analysis, unit economics, "how much does this cost to run", "what's our margin", "are we losing money on X plan", "compare top-up packs", pricing health-check, or any variant of "is this priced right". Inventories every paid API call, SDK invocation, scraper, render provider, and managed service (Vercel, Resend, Supabase, Stripe, Replicate, Fal, Apify, Upstash, Anthropic, OpenAI, Gemini, etc.), pulls per-unit rates from canonical sources, then compares against the project's pricing model (subscription tiers, top-up packs, usage-based, free). Computes margins for redlining / average / power users, surfaces loss-making paths, and diffs against prior snapshots stored in memory. Optionally writes a COSTS.md to the repo. Also invocable as `/cost-analysis`.
preprod-check
Use this skill when the user asks for a pre-production readiness check, launch checklist, "is this safe to ship", "go-live review", "prod audit", or any variant of "what should I check before deploying". Performs a structured audit covering auth/multi-tenancy, input validation, billing & credit integrity, rate limiting, cost containment, external-request safety (SSRF, uploads), secrets/env, security headers/cookies, error handling, CORS, database (indexes/backups), logging & monitoring, email/password flows, legal/compliance, and operations. Adapts checks to the detected stack (Next.js, Auth.js, Stripe, Supabase, Drizzle, AI SDKs, blob storage, etc.). Produces a severity-grouped findings report and drafts patches for trivial fixes. Also invocable as `/preprod-check`.
Bio shown is the top-scored skill's repo description as a fallback — real GitHub bios land in a future update.