Waleed
952eb1216f
* feat(mailer): add AWS SES and SMTP providers with auto-detect fallback * fix(mailer): cast SES options to bridge duplicate @aws-sdk type identities * fix(mailer): dedupe aws-sdk-sesv2, address review feedback - Force a single @aws-sdk/client-sesv2 install via root package.json overrides; @types/nodemailer pulled in a nested copy whose nominal class brand made the two SDK type identities incompatible, breaking the CI build. With one install the cast disappears. - Batch result message now reports successCount instead of sendable.length when entries are skipped, so "5 emails sent" no longer overstates delivery on partial failures. - SMTP provider now warns when SMTP_HOST is set without SMTP_PORT, and when only one of SMTP_USER/SMTP_PASS is set — both previously silent misconfigurations. - SMTP_SECURE schema is z.boolean() to match every other boolean in env.ts; runtime parsing is still handled by envBoolean. - Strip the verbose TSDoc comments I had added. * fix(mailer): exact sent counts in batch results, restore SES type cast - mergeBatchResults: data.count and the message now report only emails that were actually delivered, not skipped-unsubscribed ones (they returned success: true and inflated the count). Empty-sendable branch distinguishes "all unsubscribed" from "mixed skip/failure" so the message stops lying when some entries fail validation. - ses.ts: revert the package.json override approach (bun honors it locally but CI still installs a nested @types/nodemailer copy). Reinstate the `as unknown as` cast with a single-line WHY comment. * fix(mailer): annotate double-cast in ses provider for strict api-validation * fix(mailer): batch degrades isUnsubscribed errors to per-entry failures A transient DB error in isUnsubscribed used to abort the whole batch because the call sat outside the per-email try/catch in prepareBatch. Wrap the unsubscribe check inside the same catch so a rejection becomes a per-recipient failure, matching sendEmail's behavior. Lock it in with a regression test.
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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).
Copilot API Keys
Copilot is a Sim-managed service. To use Copilot on a self-hosted instance:
- Go to https://sim.ai → Settings → Copilot and generate a Copilot 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