* fix(cli): refuse what the help already says is invalid
- validate integer fields against the generated spec's own `kind`, so
`--limit 1.5` names the flag and the value instead of surfacing zod's
`expected int, received number`
- enforce `--limit` >= 1 on the two non-paginated row mutations, which the
help already promised and the server already required
- refuse a blank `-c/--conversation`: it is falsy, so it was dropped from
the body and silently started a new conversation instead of continuing one
- refuse a blank `chat` message before the request rather than after
- constrain `--recipe` to the recipes the generated body type declares, so
regenerating the surface breaks the build if they diverge
- announce truncation on `ls` the way `list` already does; the capped answer
was printed silently
- stop a successful message translation from vetoing itself: the veto now
reads the message the server sent, not the rewritten one, which restores
`--folder must name an existing folder` and unblocks 100+ operations
- drop "destructive" from the `--yes` help line; the gate also covers
operations that only add, such as `files unzip`
- fix the `logs follow` help, which illustrated `--workflow` with a file id
* fix(cli): refuse a fraction the integer parse silently drops
Above 2^52 a double's spacing is 1, so Number('4503599627370496.5') is an
integer and the safe-integer guard passed it — the API received a value the
caller never typed. Read the raw text alongside the parsed number. Digits
that are all zero are not a fraction, so 1.0 stays a whole number.
Also corrects a chat test comment that described a UUID check the command
does not perform; it refuses only a blank -c.
* fix(cli): redact the value the root-flag refusal suggests
The refusal prints a command for the caller to run, and interpolated the
value verbatim. A U+2028 in it split the terminal line, so the tail rendered
as a second, plausible-looking suggestion. redact() is what the other twenty
messages in this package already use, including one forty lines below.
A workspace to build, deploy and manage AI agents and workflows.
Quickstart
Cloud-hosted: sim.ai
Self-hosted
npx sim-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
Requirements: Node.js 20+ and Docker.
npx sim-setup is an interactive wizard that creates a small sim/ deployment directory, provisions the database, generates secrets, writes .env, connects a Chat API key, and starts the published Sim images with Docker Compose. It does not clone the repository.
When it finishes, open http://localhost:3000.
Inside a cloned Sim repository, run bun run sim-setup to unlock the source-only local development and Kubernetes modes.
Reconfigure an optional capability without rerunning the full wizard:
npx sim-setup config
npx sim-setup add email
npx sim-setup add storage
npx sim-setup add sandbox
npx sim-setup add jobs
npx sim-setup add cache
npx sim-setup add knowledge
npx sim-setup add chat
npx sim-setup add llm
npx sim-setup add integration slack
npx sim-setup config 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 npx sim-setup status,
which reports whether installed services are running and healthy.
Manage your install from its directory:
npx sim-setup start | stop | restart # bring your install up / down / cycle
npx sim-setup update # pull and apply Compose images
npx sim-setup status # what's installed and healthy
npx sim-setup logs # follow logs
npx sim-setup doctor # diagnose configuration problems
npx sim-setup down # remove containers (data kept)
npx sim-setup reset # archive .env and wipe managed data
The setup package detects how you're running and acts accordingly. Use --dir <path> to create or manage a deployment somewhere other than ./sim.
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. npx sim-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.




