A marketplace has three sides: buyers, sellers and the platform. Seller onboarding, commissions and split payments, dispute handling and search quality are the complex pieces that decide whether the product succeeds.
This prompt defines the seller dashboard, the platform admin and the buyer experience as separate roles, and adds your payment provider's split/escrow capabilities and GDPR/KVKK obligations to the constraints.
The experts who write this prompt
Each expert adds its own task block, constraints and success criteria to the prompt. Default selection for Multi-Vendor Marketplace:
👨💻
Staff Engineer / CTO
12y
ex-Stripe, ex-Vercel • System Architecture
Design the system architecture. Edge-first, 100ms p95. DB schema, API contract, caching strategy, multi-tenancy, RLS, idempotency. Explain why the chosen backend + DB combination is the right call, and write the scaling plan.
📦
Product Manager
8y
ex-Linear • PRD & Roadmap
Write a flawless PRD. User stories (Jobs-to-be-Done), acceptance criteria, edge cases, metrics (North Star, activation, retention); prioritize the roadmap with RICE. Scope an MVP that ships in 7 days.
💰
Monetization Strategist
9y
ex-Paddle • Pricing & Packaging
Pricing: Freemium vs. Free Trial, 3 tiers ($19/$49/$149), 20% annual discount, credit system. Hybrid flow with the selected payment providers. Churn-reduction tactics.
🔒
Security & Compliance
10y
SOC2 Auditor • KVKK/GDPR
Threat model (STRIDE), OWASP Top 10 checklist, auth/session hardening, data classification, GDPR/KVKK compliance map (data inventory, retention periods, deletion flow), audit log schema.
🔍
SEO/AEO Strategist
7y
AI Search Pioneer • Perplexity Ranking
AEO + SEO: programmatic SEO pages, schema.org, optimization for Perplexity / ChatGPT Search, internal linking, waitlist -> launch playbook.
Recommended stack
Preloaded in step 2 of the Studio; change any of the 7 layers.
Next.js 16 (App Router)
NestJS
PostgreSQL + pgvector
Better Auth
Meilisearch
Payments & revenue model
Commission %
Subscription (MRR)
Stripe2.9% + 30¢
Compliance
KVKK/GDPR
3D Secure
Features in the prompt
Every feature appears in the prompt as a "Spec + API + UI + Tests" line.
RBAC + Permissions
Multi-tenancy
Advanced CRUD + Bulk Ops
Ratings & Reviews
Chat + Video Call
Global Search (⌘K)
Admin Panel + Impersonate
Affiliate System
Sample prompt (shortened)
Sample idea: "A commission-based handmade goods marketplace for local artisans". Below are the master prompt's header and the first expert's block; the Studio generates the full text as 5 experts × 8 steps.
MULTI-VENDOR MARKETPLACE — MASTER BUILD PROMPTClaude XML • EN
# Multi-Vendor Marketplace - MASTER BUILD PROMPT
Stack: Next.js 16 (App Router), NestJS
Goal: A commission-based handmade goods marketplace for local artisans
This prompt builds a full-stack Multi-Vendor Marketplace in 8 steps. Each step consumes the previous step's output. 5 experts' knowledge combined.
Steps:
1. PRD & User Stories
2. Design System (Figma tokens)
3. DB Schema & API Contract
4. Auth & Billing Implementation
5. Core Features Build
6. AI Integration (RAG + Agents)
7. SEO/AEO & Analytics
8. Launch & Growth Checklist
---
<prompt>
<role name="Staff Engineer / CTO" org="ex-Stripe, ex-Vercel" specialty="System Architecture" experience="12y">
You are a Staff Engineer / CTO with 12 years of experience. Specialty: System Architecture. You have shipped world-class products at the level of Stripe, Linear and Vercel.
</role>
<context>
Project: Multi-Vendor Marketplace - A commission-based handmade goods marketplace for local artisans
Type: Multi-Vendor Marketplace
Vision: Seller applications and approval, shop pages, order and shipment tracking, buyer-seller messaging, split payments with an 8% commission, a review system and a dispute flow.
Target user: Founders building niche marketplaces - Pain: - Budget:
Competitors:
USP:
Monetization: Commission %, Subscription (MRR) | Payments: Stripe
Tech Stack: Next.js 16 (App Router), NestJS, PostgreSQL + pgvector, Better Auth, Meilisearch
Features: RBAC + Permissions, Multi-tenancy, Advanced CRUD + Bulk Ops, Ratings & Reviews, Chat + Video Call, Global Search (⌘K), Admin Panel + Impersonate, Affiliate System
Compliance: KVKK/GDPR, 3D Secure
Lang: EN
</context>
<task>
Design the system architecture. Edge-first, 100ms p95. DB schema, API contract, caching strategy, multi-tenancy, RLS, idempotency. Explain why the chosen backend + DB combination is the right call, and write the scaling plan.
General: production quality, copy-paste ready level of detail.
</task>
<technical_architecture>
- Frontend: Next.js 16 (App Router) - App Router, Server Components, partial prerendering
- Backend: NestJS - Edge runtime, RPC, zod validation
- DB: PostgreSQL + pgvector - pgvector for semantic search, type-safe ORM, RLS policies
- Auth: Better Auth - Passkeys first, org/team model
- Search: Meilisearch - typo-tolerant, faceted
- Realtime: - presence, CRDT-ready
Payment flow: Stripe -> Webhook -> Background job -> Entitlement update -> Audit log
</technical_architecture>
<feature_matrix>
- [ ] RBAC + Permissions -> Spec + API + UI + Tests
- [ ] Multi-tenancy -> Spec + API + UI + Tests
…
The rest is in the Studio: every expert block, the feature matrix and the Mega Chain.Generate the full prompt
Mega Chain: a full-stack Multi-Vendor Marketplace in 8 steps
1. PRD & User Stories
2. Design System (Figma tokens)
3. DB Schema & API Contract
4. Auth & Billing Implementation
5. Core Features Build
6. AI Integration (RAG + Agents)
7. SEO/AEO & Analytics
8. Launch & Growth Checklist
FAQ
How are split payments handled?
The prompt calls for Stripe Connect (or the Iyzico Marketplace model in Turkey) and defines payment, commission deduction and payout to the seller as a state machine.
How detailed is seller onboarding?
Application, document verification, store setup and first-product steps are all covered in the Product Manager persona's user stories.
Which tools can I paste the generated prompt into?
Claude Code, Cursor, Windsurf, v0, Lovable, Bolt and ChatGPT. You pick the output format (Claude XML, ChatGPT Markdown, Cursor Rules, v0, Lovable/Bolt) in step 4 of the Studio, and you can also download it as .cursorrules or CLAUDE.md.
Is it free?
Yes. On the Free plan you generate unlimited prompts with 3 experts and 2 formats — no card required. 18 experts, the Mega Chain and Export to Builders come with Monster Pro ($29/mo).