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WaleedandClaude Opus 4.7
ef14b2b580
* fix(security): remove localhost CORS origin, consolidate CORS in proxy Move all /api/* CORS handling from next.config.ts to proxy.ts so the runtime can resolve allowed origin per-request instead of baking it at build time (which produced "Access-Control-Allow-Origin: http://localhost:3000" with credentials:true in production). - proxy.ts: per-route CORS policy table covering auth, MCP, form, and workflow execute endpoints; OPTIONS preflight short-circuit; Vary: Origin when origin is not '*'; form routes defer to route handler's addCorsHeaders to avoid double-setting - next.config.ts: drop all /api/* Access-Control-Allow-* headers; keep COEP/COOP/CSP - deployment.ts: addCorsHeaders sets Vary: Origin alongside reflected Allow-Origin - Dockerfile: drop NEXT_PUBLIC_APP_URL build placeholder (Zod has skipValidation:true; build path doesn't read it) - Remove 8 dead OPTIONS handlers and their preflight tests now that the proxy handles preflight uniformly * refactor(cors): consolidate API CORS into proxy as single source of truth Move CORS for /api/chat/* and /api/form/* into the proxy policy table with reflected-origin + credentials:false, and delete the per-route addCorsHeaders helper. Routes no longer set CORS headers — the proxy is the only writer. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com> * refactor(cors): convert proxy CORS policy chain to a rule table + add tests Replace the if/else chain in resolveApiCorsPolicy with a CORS_RULES table so each route's policy lives in one place and is trivially scannable. Add proxy.test.ts covering each rule and the wildcard-with-credentials invariant. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com> * fix(cors): scope embed CORS rule to /api/{chat,form}/[identifier] only The embed policy (reflected origin, credentials:false) was matching workspace-internal session-authed routes — /api/chat, /api/chat/manage/*, /api/chat/validate, and the form equivalents — which need the default credentialed policy. Tighten the matcher to the embed paths only and add tests covering the exclusion. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com> * refactor(cors): replace embed-path regex with explicit segment check The regex form `^/api/(chat|form)/(?!manage|validate)[^/]+(/(otp|sso))?$` was opaque on review and would silently exclude any future identifier subroute outside the hard-coded (otp|sso) group from the embed policy. Replace it with an imperative segment check and a named EMBED_RESERVED_SEGMENTS Set, so the policy boundary is visible at the top of the function and adding a reserved subpath is a one-line diff. Add a test asserting that future identifier subroutes also get the embed policy. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com> * fix(cors): allow PUT in embed CORS policy for OTP verification Both /api/chat/[identifier]/otp and /api/form/[identifier]/otp export PUT for OTP code verification. The embed policy advertised only GET/POST/OPTIONS, so cross-origin embed clients failed preflight on verify. Add PUT and assert it in the embed policy test. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>
The open-source platform to build AI agents and run your agentic workforce. Connect 1,000+ integrations and LLMs to orchestrate agentic workflows.
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Design agent workflows visually on a canvas—connect agents, tools, and blocks, then run them instantly.
Supercharge with Copilot
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Integrate Vector Databases
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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