* fix(queries): close React Query key/fetch-arg drift cache collisions Several query hooks fetched with an identifier that was absent from their queryKey, so distinct fetch args shared one cache entry. Thread the missing args into the key factories and update all callsites/invalidations. - organization: useOrganization always fetched the ACTIVE org via getFullOrganization() while caching under detail(orgId). Pass orgId through to the better-auth call (query.organizationId); active-org behavior unchanged. - logs: logKeys.detail now keys on (workspaceId, logId) to prevent cross- workspace collision; updated useLogDetail, useLogByExecutionId, prefetchLogDetail, useCancelExecution optimistic path, and external callsites. - inbox: inboxKeys.taskList now includes cursor/limit (pagination args were sent but omitted from the key); keepPreviousData pagination UX preserved. - a2a: narrow create/update byWorkflows() invalidation to byWorkflow(ws, wf) since their responses reliably carry both ids; delete/publish stay broad. Not bugs (verified, left unchanged): - kb/connectors update/delete invalidate knowledgeKeys.detail(kbId), which is a prefix of connectorKeys.all(kbId) — connector list/detail are invalidated transitively by React Query prefix matching. Harness: add a key-fetch-arg-drift check to check-react-query-patterns.ts that flags a camelCase identifier the queryFn forwards into the fetch but is absent from the queryKey (excludes the requestJson contract arg, PascalCase/SCREAMING constants, and signal/pageParam machinery). Document the rule in sim-queries.md. tables.useTable annotated rq-lint-allow (tableId globally unique; workspaceId is only an authz scope). * fix(stores): whitelist durable fields in persist partialize chat/terminal/panel persist configs leaked actions and transient state into localStorage. Replace the chat full-state spread with an explicit durable whitelist, and add partialize to terminal and panel (which had none) so isResizing and _hasHydrated are no longer persisted. Panel keeps activeTab + panelWidth because the layout.tsx blocking script reads them from panel-state to set data-panel-active-tab before hydration (SSR tab-flash prevention). Harden sim-stores doctrine: persist MUST use an explicit partialize whitelist; never persist transient flags or _hasHydrated. * fix(state): model component useState as single source of truth - edit-knowledge-base-modal: reset fields on closed→open via prevOpenRef render idiom instead of mirroring props into state through useEffect (a prop change while open no longer clobbers in-progress edits) - use-verification: collapse contradictory isLoading/isVerified/isInvalidOtp booleans into a single status enum + errorMessage; consumer derives flags - contact-form / demo-request-modal: derive busy/success from the mutation object; delete duplicated submitSuccess local state - sim-hooks.md: add state-shape rule (no props-into-state, status enum, derive mutation state) * fix(verify): clear lingering message on complete OTP (restore parity) * docs(state): convert inline reset comment to TSDoc * docs(state): tighten harness rules for accuracy (queryFn forwards, partialize whitelist, mutation-flag caveat) * fix(verify): block auto-verify while a resend is in flight (restore parity) * fix(logs): key cancel optimistic detail by route workspaceId (not the log row)
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




