Waleed
9fc65863cd
Three defects, one shape: a rule applied to one path and not its sibling. Two were found by probing the live surface after the previous fixes deployed, and the third by reading for the pattern. Creating a workflow group through the public surface validated almost nothing the update path validates. An enrichment group could name an enrichment the registry does not define, or an output the enrichment does not have, or carry no output id at all — each a 201 storing a column no run can ever write, discovered only when the caller later tried to edit the group and got the 400 create should have given. The workflow half was the same: a fabricated block-and-path coordinate was stored on create and refused on update. Create now runs the same two registry helpers and the same workflow-output check the update path uses. The discriminator there is the backing workflow id, not the declared type. The workflow sidebar creates enrichment-template groups labelled `enrichment` while backed by a real workflow and carrying no enrichment id, so keying on the label would have refused the first-party create path outright. A group's producer type could also be relabelled after the fact into a state creation refuses. Nothing rejected it and nothing could repair it, since the update body carries no enrichment id to supply. Relabelling an enrichment group as workflow-backed is the harmful direction: it keeps the enrichment id while moving the group onto the workflow branch with an empty workflow id, so every cell run fails. An update may now only restate the type the group already has. The workflow-version and workspace-member lists were the last two paged reads minting cursors with no route identity, so a token from one parent resumed another at a position that silently skips rows — the defect the previous change closed everywhere else. Both now wrap their domain token with the same scope binding, and the pagination guardrail gained a declaration of every nested list's parent path param, because the old one recorded only query filters and so could not tell an unfiltered list from a forgotten parent.
A workspace to build, deploy and manage AI agents and workflows.
Quickstart
Cloud-hosted: sim.ai
Self-hosted
git clone https://github.com/simstudioai/sim.git && cd sim
bun install
bun run setup
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, and knowledge all live in the same workspace.
Tables — a database, built in |
Files — one store for your team and every agent |
Knowledge — your agents' memory |
Self-hosting
bun run setup is an interactive wizard: it provisions the database, generates secrets, writes your .env files, connects a Chat API key, and starts Sim the way you choose:
- Local dev — run from source to contribute or hack on Sim
- Docker Compose — a self-contained instance for testing self-hosting
- Kubernetes (Helm) — deploy to a local cluster
When it finishes, open http://localhost:3000.
Reconfigure an optional capability without rerunning the full wizard:
bun run setup status
bun run setup email
bun run setup storage
bun run setup sandbox
bun run setup jobs
bun run setup cache
bun run setup knowledge
bun run setup llm
bun run setup integration slack
bun run setup status detects the effective local-dev, Docker Compose, or current-context
Helm configuration and reports configured, missing, or invalid capabilities and OAuth
integrations without printing credential values. This is separate from bun run sim status,
which reports whether installed services are running and healthy.
Manage your install with bun run sim:
bun run sim start | stop | restart # bring your install up / down / cycle
bun run sim update # pull/rebuild and apply Compose images
bun run sim status # what's installed and healthy
bun run sim logs # follow logs
bun run sim doctor # diagnose configuration problems
bun run sim down # remove containers (data kept)
bun run sim reset # archive .env and wipe managed data
sim detects how you're running (Docker Compose, local dev, or Kubernetes) and acts accordingly.
Prefer a bare sim? Run bun link once — but note sim lands in ~/.bun/bin, which Homebrew's bun doesn't add to your PATH, so you may need export PATH="$HOME/.bun/bin:$PATH" in your shell profile.
Sim also supports local models via Ollama and vLLM. See the self-hosting docs for details.
Chat API Keys
Chat is a Sim-managed service. bun run setup connects a Chat API key for you — sign in when it opens your browser and the key is stored automatically. To view, create, or revoke keys later, go to sim.ai/selfhost/settings/chat-keys.
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.
