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JoinData: TikTok Shop analytics that shows sellers their true net profit
JoinData is a TikTok Shop analytics platform that turns raw TikTok Shop financial data — statements, settlements, and fee breakdowns — into a drillable profit & loss report, so sellers finally see their true net profit instead of just gross sales.
We at NERDZ LAB built the platform from scratch for a US-based co-founder of an omnichannel marketing company: the analytics dashboard, the API platform, a private TikTok Shop integration service, Stripe-powered subscriptions, an internal admin panel, and an AI layer that lets sellers query their numbers through assistants like Claude. The full MVP shipped in two months.
2 months
from kickoff to a shipped, live MVP
5 services
shipped as one platform — dashboard, API, TikTok integration service, admin panel, MCP server
1 developer + AI
delivered the full engineering scope
Screens
Services
Product design
Product design
Web development
Front-end
Back-end
Technologies:
React
Laravel
Node.js
PHP
Stripe payments
Next.js
TypeScript
NestJS
PostgreSQL
TikTok Shop API
Anthropic Claude API
MCP (Model Context Protocol)
Railway
Team composition:
1 Front-end developer
1 Back-end developer
Product_
JoinData gives TikTok Shop sellers a single dashboard where their real profitability is computed server-side from live shop data. A seller connects their TikTok Shop in one OAuth flow; JoinData then continuously syncs statements, orders, and fee data and rolls them into a P&L waterfall:
Gross Sales − Product Discount − Platform cost − Affiliate − Marketing − Shipping − Custom costs = Net profit
On top of the waterfall, sellers get SKU-level profitability, brand-impact analysis, and fully editable custom costs — fixed monthly costs (ads, agency, collabs), per-product COGS with effective date ranges, and sample counts — so the “net profit” number reflects their actual business, not just what TikTok reports.
The platform is multi-tenant: sellers organize into squads with roles and granular permissions (owner / admin / member / viewer), invitations, and per-squad subscriptions billed through Stripe across four plans (Free, Launch, Boost, Enterprise). A Boost-tier AI chat, powered by Anthropic’s Claude, answers questions about the seller’s own data — and a dedicated MCP server exposes the same analytics as tools any AI assistant can call.
Challenge_
Fragmented financial data. TikTok Shop reports money across separate statements, settlements, and fee exports with no unified profit view. The core challenge was reconciling these into one accurate, drillable P&L a seller can trust.
Security of seller credentials. TikTok OAuth tokens are isolated in a network-private microservice with its own dedicated database — the user-facing API never touches them; it only proxies authenticated, permission-checked requests over an internal key-guarded API.
Real costs, not just platform fees. Fee data alone doesn’t give net profit. The team designed a custom-costs model (COGS with date-effective history, fixed monthly costs, samples) that the compute engine merges into every P&L and per-SKU margin.
A full commercial platform on an MVP timeline. Multi-tenancy, role-based permissions, Stripe subscription billing with plan limits, transactional email, and an internal operations panel (with support impersonation) all had to ship alongside the analytics — in two months, from scratch.
Features
- One-click TikTok Shop connection (OAuth) with automated background data sync and a visible fetch history
- Drillable P&L waterfall from gross sales down to true net profit
- SKU profitability and brand-impact analytics computed server-side
- Editable custom costs: fixed monthly costs, per-product COGS with effective date ranges, monthly samples, arbitrary line items
- Multi-tenant squads with roles, permissions, invitations, and join requests
- Subscription billing via Stripe with four plans and enforced plan limits
- AI chat over the seller’s own analytics (Anthropic Claude)
- Remote MCP server — the analytics exposed as callable tools for AI assistants
- PDF export of the dashboard, weekly email digest, light/dark theming
- Internal admin panel (Filament) for operations: squads, connections, subscriptions, impersonation
The results
Listed in the TikTok Shop App Store — TikTok Shop accepted and listed the app in its official App Store.
Full MVP in two months — a five-service production platform (dashboard, API, TikTok integration service, admin panel, MCP server) shipped from scratch between June and August 2026.
Great feedback from first users — early sellers and the client’s community responded positively to the product.
AI-first delivery proven — one full-stack developer directing AI-written code delivered the scope of a multi-person team, with the developer reviewing and controlling every change.
Testimonial
Alex Kovalov
OMNIsquad
Alex Kovalov
OMNIsquad
