Welcome to Linea

Linea is a workflow automation platform designed to run AI agent pipelines at scale. It provides everything needed to build, schedule, monitor, and remember across automated workflows.

This documentation covers the internal architecture of Linea: intended for contributors and developers building on top of the platform.

What Linea Provides

Workflow Engine: define, deploy, and trigger multi-step automation workflows
Execution Runtime: BullMQ-powered job processing with real-time status tracking
Memory System: SuperMemory-inspired atomic fact storage with pgvector hybrid search
Knowledge Bases: workspace-scoped document stores with vector search
MCP Integration: attach Model Context Protocol servers as tools to any workflow
Schedules & Webhooks: cron triggers and HTTP event hooks
Notifications: user-scoped event feed
API Keys: workspace-level credentials for programmatic access

System Architecture

Workspace & Space Model

Memory System

Workflow Engine

Tech Stack

Layer	Technology
API	NestJS 11, TypeScript
Database	PostgreSQL + pgvector (via Drizzle ORM)
Job Queue	BullMQ + Redis
Auth	Clerk
Frontend	Next.js 15, React 19, Tailwind CSS v4
Monorepo	Turborepo + pnpm workspaces
AI	Anthropic Claude Haiku (extraction), OpenAI (embeddings)

Repository Layout

linea/
├── apps/
│   ├── api/        # NestJS backend
│   ├── web/        # Next.js 15 frontend
│   └── docs/       # This documentation (Fumadocs)
├── packages/
│   ├── db/         # Drizzle schema + client
│   ├── types/      # Shared TypeScript types
│   └── ui/         # shadcn/ui component library

Introduction