* fix(billing): deploy modal gates on workspace entitlement, not viewer plan The deploy modal showed the upgrade wall to a free user in a PAID workspace, because it gated on the viewer's individual plan (useSubscriptionData) while the server gates on the workspace billed account (rolled-up plan). Add a workspace api-execution-entitlement endpoint that mirrors isWorkspaceApiExecutionEntitled, and gate the API/MCP/A2A tabs on it so the UI matches the server exactly. * fix(billing): key deploy gate on URL workspaceId + refetch entitlement on open Address review findings: - key useWorkspaceApiExecutionEntitlement on the URL workspaceId (available on mount) instead of workflowWorkspaceId (null until the workflow map resolves), so the gate fires immediately instead of leaving the tabs ungated until then - staleTime 0 so reopening the deploy modal refetches entitlement; a plan upgrade happens outside this query's invalidation graph, so the gate self-heals on open * refactor(billing): workspace owner access state instead of bespoke entitlement endpoint Replace the single-purpose api-execution-entitlement endpoint with a reusable workspace-owner billing/access concept — the workspace-scoped counterpart to the viewer-scoped useSubscriptionData: - getWorkspaceOwnerSubscriptionAccess(workspaceId): the billed account's rolled-up subscription access fields (mirrors getSimplifiedBillingSummary's flag derivation) - GET /api/workspaces/[id]/owner-billing + useWorkspaceOwnerBilling hook - deploy modal derives its gate via the existing getSubscriptionAccessState (hasUsablePaidAccess) on the owner data, exactly like every other paid feature Audited the rest of the app: no other UI gates on the viewer's plan where the server gates on the workspace owner — programmatic execution is the only workspace-owner-scoped feature; inbox/KB-live-sync/credential-sets all gate consistently on both sides. * fix(billing): deploy gate on owner isPaid, not hasUsablePaidAccess hasUsablePaidAccess rejects past_due and billing-blocked, but the server gate (isWorkspaceApiExecutionEntitled) allows any paid plan in an entitled status (active or past_due). Gate on the owner's isPaid so a past_due paid workspace isn't shown the upgrade wall while the API still works.
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.
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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




