* refactor(table): extract row ordering, executions, and tx helpers from service.ts Move the row position/fractional-ordering internals to rows/ordering.ts, the row-execution (workflow-group result) internals to rows/executions.ts, and the shared tx-timeout helpers to tx.ts. Pure code-motion — verbatim bodies, identical behavior. service.ts: 5324 -> 4442 lines. * refactor(table): extract row CRUD and query into rows/service.ts Move insert/update/upsert/delete/replace/batch row writes, queryRows/ getRowById reads, and findRowMatches into rows/service.ts. Verbatim bodies; consumers repointed; @/lib/table barrel re-exports the new module so callers are unchanged. service.ts: 4442 -> 2788 lines. * refactor(table): extract column/schema management into columns/service.ts Move add/rename/delete column ops and column-type/constraint updates into columns/service.ts. addTableColumnsWithTx stays in service.ts (table-creation primitive) to avoid a cycle. Verbatim bodies; barrel re-exports the module. service.ts: 2788 -> 2149 lines. * refactor(table): extract job state machine and export jobs into jobs/service.ts Move tableJobs reads/mapping, the job lifecycle state machine, and export-job queries into jobs/service.ts. service.ts imports latestJob* one-way for table metadata enrichment (no cycle). Import-data orchestration helpers stay in service.ts for now. Verbatim bodies. service.ts: 2149 -> 1791 lines. * refactor(table): extract workflow-group management into workflow-groups/service.ts Move add/update/delete workflow groups + outputs and pruneStale into workflow-groups/service.ts, preserving the dynamic backfill-runner import (cycle-breaker). Verbatim bodies; no cycle. service.ts: 1791 -> 851 lines. * refactor(table): extract import-job data ops into import-data.ts Move bulk insert, schema setup, and append/replace import operations into import-data.ts (consumed by import-runner + import route). service.ts is now the pure table-entity module (root CRUD + shared lock/column primitives). Verbatim bodies; no cycle. service.ts: 851 -> 664 lines (5324 at start). * refactor(table): restore private visibility and drop dead helpers post-split Un-export DerivedJobFields/JOB_PROJECTION/mapJobRow (file-local in jobs/service.ts, were private pre-split) so they no longer leak into the @/lib/table barrel. Remove dead code carried into the new modules: countTables (createTable does its own inline count check) and the unused buildOrderedRowValues/OrderedRowValue pair. * refactor(table): use absolute imports throughout and fix an orphaned TSDoc Normalize all relative imports under lib/table to absolute @/lib/table/... per the project import rule (the split modules and a few pre-existing holdouts), and relocate the getTableById TSDoc that had drifted above applyColumnOrderToSchema. Comment/import-only; zero behavior change.
The open-source AI workspace where teams build, deploy, and manage AI agents. Build conversationally, visually, or with code. Connect 1,000+ integrations and every major LLM to automate real work.
Build everything in Chat
Your AI command center. Describe what you want in plain language. Sim knows your entire workspace and takes action: building agents, running them, querying data, and more.
Create files and documents
Generate documents, reports, and presentations from a single prompt, grounded in your workspace data.
Ground agents in your knowledge
Upload documents to a knowledge base and let agents answer questions from your own content.
Structured data with Tables
A database, built in. Store, query, and wire structured data into agent runs.
Build visually with Workflows
Prefer a canvas? Design agents block by block in the visual builder, and let Sim generate blocks, wire variables, and fix errors from natural language.
Quickstart
Cloud-hosted: sim.ai
Self-hosted: NPM Package
npx simstudio
Note
Docker must be installed and running on your machine.
Options
| Flag | Description |
|---|---|
-p, --port <port> |
Port to run Sim on (default 3000) |
--no-pull |
Skip pulling latest Docker images |
Self-hosted: Docker Compose
git clone https://github.com/simstudioai/sim.git && cd sim
docker compose -f docker-compose.prod.yml up -d
Sim also supports local models via Ollama and vLLM. See the Docker self-hosting docs for setup details.
Self-hosted: Manual Setup
Requirements: Bun, Node.js v20+, PostgreSQL 12+ with pgvector
- Clone and install:
git clone https://github.com/simstudioai/sim.git
cd sim
bun install
bun run prepare # Set up pre-commit hooks
- Set up PostgreSQL with pgvector:
docker run --name simstudio-db -e POSTGRES_PASSWORD=your_password -e POSTGRES_DB=simstudio -p 5432:5432 -d pgvector/pgvector:pg17
Or install manually via the pgvector guide.
- Configure environment:
cp apps/sim/.env.example apps/sim/.env
# Create your secrets
perl -i -pe "s/your_encryption_key/$(openssl rand -hex 32)/" apps/sim/.env
perl -i -pe "s/your_internal_api_secret/$(openssl rand -hex 32)/" apps/sim/.env
perl -i -pe "s/your_api_encryption_key/$(openssl rand -hex 32)/" apps/sim/.env
# DB configs for migration
cp packages/db/.env.example packages/db/.env
# Edit both .env files to set DATABASE_URL="postgresql://postgres:your_password@localhost:5432/simstudio"
- Run migrations:
cd packages/db && bun run db:migrate
- Start development servers:
bun run dev:full # Starts Next.js app and realtime socket server
Or run separately: bun run dev (Next.js) and cd apps/sim && bun run dev:sockets (realtime).
Chat API Keys
Chat is a Sim-managed service. To use Chat on a self-hosted instance:
- Go to https://sim.ai → Settings → Chat keys and generate a Chat API key
- Set
COPILOT_API_KEYenvironment variable in your self-hosted apps/sim/.env file to that value
Environment Variables
See the environment variables reference for the full list, or apps/sim/.env.example for defaults.
Tech Stack
- Framework: Next.js (App Router)
- Runtime: Bun
- Database: PostgreSQL with Drizzle ORM
- Authentication: Better Auth
- Schema Validation: Zod
- UI: Shadcn, Tailwind CSS
- Streaming Markdown: Streamdown
- State Management: Zustand, TanStack Query
- Flow Editor: ReactFlow
- Docs: Fumadocs
- Monorepo: Turborepo
- Realtime: Socket.io
- Background Jobs: Trigger.dev
- Remote Code Execution: E2B
- Isolated Code Execution: isolated-vm
Contributing
We welcome contributions! Please see our Contributing Guide for details.
License
This project is licensed under the Apache License 2.0 - see the LICENSE file for details.
Made with ❤️ by the Sim Team




