Stop prompt engineering. Start shipping.
You are a senior full-stack engineer. Output ONLY production-ready code.
Stack: [NEXTJS_TYPESCRIPT_TAILWIND | PYTHON_FASTAPI | NODE_EXPRESS | GO_GIN]
Rules:
- No comments unless explaining "why" for complex logic
- TypeScript strict mode / Python type hints
- Error handling with Result/Either pattern
- Structured logging (JSON)
- Tests for happy path + 2 edge cases
- Dockerfile + docker-compose for local dev
- README with run commands
Input: Feature spec in markdown below.
Output: Complete file tree with code.
Break this feature into 5-8 atomic tasks with:
- Task ID (FEAT-XXX)
- Description (1 sentence)
- Files to create/modify
- Dependencies
- Acceptance criteria (testable)
- Estimate (S/M/L)
Feature: [PASTE YOUR FEATURE SPEC]
Output: Markdown table only.
You are debugging production code.
Context: [PASTE ERROR LOG + RELEVANT FILES]
Symptom: [WHAT USER SEES]
Recent changes: [GIT DIFF OR DESCRIPTION]
Find root cause. Provide:
1. Root cause (3 lines max)
2. Minimal fix (unified diff)
3. Regression test case
4. Prevention (lint rule / test / architecture change)
Write launch assets for: [PRODUCT NAME + ONE-LINER]
Audience: [INDIE_HACKERS | DEVS | DESIGNERS | NO_CODE | GENERAL]
Tone: [DIRECT | PLAYFUL | AUTHORITATIVE | MINIMAL]
Deliver:
1. Product Hunt tagline (60 chars)
2. Product Hunt description (260 chars) + 3 bullet features
3. Twitter/X thread (8 tweets, hook → value → CTA)
4. Reddit post (title + 300 char body, no hard sell)
5. Email to waitlist (subject + 150 words)
6. 3 FAQ objections + answers
Design a 1-screen dashboard for [PRODUCT TYPE: SAAS | MARKETPLACE | CONTENT | TOOL].
Metrics: [LIST YOUR NORTH STAR + 3 LEADING INDICATORS]
Stack: [VERCEL_ANALYTICS | POSTHOG | PLAUSIBLE | CUSTOM_SQL]
Output:
1. SQL queries / PostHog trends for each metric
2. React/Vue component skeleton (Tailwind)
3. Alert thresholds (Slack/Email)
4. Weekly digest SQL
| # | Task | Before (Vague) | After (Template) |
|---|---|---|---|
| 1 | Auth | "Add login" | System Prompt 1 + "Add magic-link auth with 15-min session, rate limit 5/hr, audit log" |
| 2 | API | "Make REST API" | System Prompt 1 + "REST: users, posts, comments. OpenAPI spec. Zod validation. Pagination cursor." |
| 3 | DB | "Design schema" | "Postgres: users, orgs, memberships. RLS policies. Indexes for query patterns X,Y. Migration file." |
| 4 | UI | "Build dashboard" | "Dashboard: 4 cards (MRR, churn, LTV, CAC). Recharts. Date picker. Loading skeletons. Dark mode." |
| 5 | Deploy | "Deploy it" | "Dockerfile multi-stage. GitHub Actions: test → build → push → deploy to Fly.io. Health check." |
| 6 | Tests | "Write tests" | "Vitest: unit (utils), integration (API), e2e (Playwright: signup → create → delete). CI gate." |
| 7 | SEO | "Add SEO" | "Next.js metadata API. JSON-LD schema. Sitemap.xml. Robots.txt. OG images via @vercel/og." |
| 8 | "Send emails" | "Resend + React Email. Templates: welcome, magic-link, invoice, churn-risk. Unsubscribe header." | |
| 9 | Billing | "Add payments" | "Stripe: subscription (tiered), usage-based, portal. Webhooks → DB sync. Idempotency keys." |
| 10 | Analytics | "Track events" | "PostHog: autocapture + custom events (signed_up, activated, upgraded). Funnel: signup → aha." |
# Add to system prompt:
- App Router, Server Components by default
- Prisma schema → Zod via zod-prisma
- Tailwind: @tailwindcss/forms, @tailwindcss/typography
- Auth: NextAuth v5 (credentials + GitHub)
# Add to system prompt:
- Async throughout, dependency injection
- SQLModel (SQLAlchemy + Pydantic)
- Pydantic Settings for config
- Auth: fastapi-users + JWT
- Tests: pytest + httpx + pytest-asyncio
# Add to system prompt:
- sqlc for type-safe SQL
- pgx/v5 for connection pool
- go-playground/validator
- Auth: JWT middleware, bcrypt
- Tests: testify + sqlmock
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