StreamLine App

The client portal that turns project chaos into clarity, built for web studios.

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Inspiration

Running a web studio means juggling clients across email threads, Notion docs, Slack DMs, and spreadsheets — all while trying to get a simple "yes" on a design deliverable. We wanted one focused tool where the studio tracks everything internally and the client gets a clean, no-friction window into their project.

What It Does

StreamLine is a B2B SaaS project tracking platform for web studios and digital agencies. It has two distinct audiences:

Studio workspace — A dashboard to manage clients, projects, and deliverables. Milestones have an interactive timeline. Deliverables go through an approval workflow. An AI-powered proposal generator (Claude Opus 4.8, real-time streaming) turns a brief into a structured project document in seconds.

Client portal — Clients receive a magic link. No account, no password. They see their project status, review deliverables, and approve (or request changes with a comment) in one tap. When they act, the studio gets an in-app notification instantly.

How We Built It

  • Next.js 15 (App Router) deployed on Vercel for the frontend
  • NestJS 10 REST API running on AWS with JWT auth and role-based guards
  • DynamoDB single-table design — one table handles organizations, clients, projects, milestones, deliverables, messages, notifications, and portal invites via composite PK/SK keys and two GSIs
  • Claude Opus 4.8 via the Anthropic API with adaptive thinking and streaming SSE for the proposal generator
  • Resend for transactional emails (magic links, approval notifications)

DynamoDB Design Highlight

We used a true single-table design: ORG#{id} | PROJECT#{id}, PROJECT#{id} | MSG#{iso}#{uuid}, USER#{id} | NOTIF#{iso}#{uuid}. GSI1 handles inverse lookups (SK→PK); GSI2 enables cross-org project access by ID. TTL on invite tokens (90 days) handles automatic cleanup without a cron job.

What's Next

  • Real-time updates via DynamoDB Streams + WebSockets (replace polling)
  • Client-side messaging in the portal (two-way communication)
  • Multi-member studio teams with per-project role assignment
  • Stripe billing integration for client invoicing within the platform

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