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Theodore LiandClaude Opus 4.8
97bb727eeb
* fix(pii): install CUDA torch on amd64 so GLiNER can run on GPU The published pii image installed a CPU-only torch build, so GLiNER on the ECS GPU fleet died at model load with "Attempting to deserialize object on a CUDA device but torch.cuda.is_available() is False". The Dockerfile already had a TORCH_INDEX_URL arg, but no CI job ever passed --build-arg, so every image silently took the cpu default. Select the wheel index from TARGETARCH instead: amd64 gets cu128, arm64 keeps the cpu index (cu128 publishes no aarch64 wheel at 2.11.0, and no arm64 target has a GPU). CUDA torch falls back to CPU when no GPU is present, so one image still serves both the Fargate CPU tasks and the EC2 GPU tasks off the same tag — no CI or CDK changes needed. cu128 keeps sm_75, the compute capability of the fleet's T4s, and its CUDA 12.8 runtime needs driver >=525 via minor-version compatibility, which the ECS GPU AMI satisfies. cu121 was not an option: that index stops at torch 2.5.1. Verified in an amd64 build of the changed block: 2.11.0+cu128 cuda=12.8 arch=sm_75 sm_80 sm_86 sm_90 sm_100 sm_120 arm64 still resolves to 2.11.0+cpu. A build-time assert now fails the image if amd64 ever silently regresses to a cpu wheel. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01QHNEWVrh7k89m8Wtqzhs18 * fix(pii): assert torch CUDA state after every pip install The check sat directly after the torch install, but requirements-gliner.txt and requirements-dev.txt are installed afterwards and resolve against PyPI with no torch pin, so a future gliner bump could swap the wheel that torch_index selected without tripping the assert. Neither file changes torch today (verified: torch is 2.11.0+cu128 both before and after the gliner install), so this guards the invariant rather than fixing a live regression. Moving it below the last pip install makes it certify the torch that actually ships. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01QHNEWVrh7k89m8Wtqzhs18 --------- Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
A workspace to build, deploy and manage AI agents and workflows.
Quickstart
Cloud-hosted: sim.ai
Self-hosted
npx simstudio
Docker must be installed and running. Use -p, --port <port> to run Sim on a different port, or --no-pull to skip pulling the latest Docker images.
Capabilities
- Connect 1,000+ integrations and every major LLM
- Add Slack, Notion, HubSpot, Salesforce, databases, and more
- Build agents visually, conversationally, or with code
- Ingest files, knowledge bases, and structured table data
- Monitor runs, logs, schedules, and workflow activity
One workspace, every surface
Chat and workflows are just the start — tables, files, knowledge, and scheduled tasks all live in the same workspace.
Tables — a database, built in |
Files — one store for your team and every agent |
Knowledge — your agents' memory |
Scheduled tasks — runs on your schedule |
Self-hosting
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.
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
Next.js · Bun · PostgreSQL · Drizzle · Better Auth · Tailwind — and the rest of the 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.
