Checklist for adding a new AI provider (image, video, text, audio) that satisfies all 5 integration principles — ACL, bulkhead, idempotency, observability, and contract test. Load when integrating any new external AI API. Prevents the most common mistake of pasting httpx calls directly into a service.
Systematic 5-step backend debugging flow for AI-coded FastAPI apps. Load this skill when a bug is reported, a test fails, or unexpected behavior appears in any backend layer. Forces layer isolation before touching code — prevents the "touch 8 files and make it worse" pattern.
Systematic 5-step debugging flow for Next.js 15 + React 19 + TypeScript apps. Load when a UI bug is reported, hydration error appears, Server Action returns wrong data, or cache invalidation fails. Forces layer isolation (server vs client, action vs component, cache vs render) before touching code — prevents "fix here, break there" cascades.
Systematic 5-step debugging flow for Go 1.22+ services. Load when a test fails, a goroutine leaks, a downstream provider hangs, errors lose context, or production logs are unhelpful. Forces layer isolation (handler vs service vs repo vs provider) and runs the 5 most common Go antipattern greps before any code change — prevents the "add a goroutine to fix a slow handler" cascade.
Pre-flight checklist for adding a new feature to a Go 1.22+ service. Load when creating a new endpoint, internal package, external integration, or background worker. Forces "accept interfaces, return structs", `context.Context` propagation, error wrapping, and bulkhead-per-provider from line one — prevents the most common AI failures (God interfaces, raw goroutines without errgroup, http.DefaultClient everywhere, panic on errors).
Pre-flight checklist for adding a new feature to a Next.js 15 + TypeScript app. Load when creating a new page, route, server action, or feature module. Forces feature-driven colocation, RSC-first thinking, and the typed cache-tag pattern from line one — prevents the most common AI failures (1500-line page.tsx, 'use client' on the layout, scattered revalidateTag magic strings).
Pre-flight checklist that must complete before writing the first line of code for any new feature. Load this skill when starting a new endpoint, service method, or integration. Prevents the most common AI-coding failure mode — writing code before defining layer boundaries, which leads to features that work today and break in 3 months.
Safe procedure for decomposing a god file (400+ LOC) into a sub-package without breaking any imports. Load when a file exceeds 400 lines or mixes multiple concerns. Implements vibecodex Principles A1 and A8 — folder-instead-of-file with backward-compatible re-exports.