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simstudioai/sim

Sim is a collaborative workspace for building, deploying, and monitoring AI agents and workflows, with 270+ integrations and support for major LLMs.

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What is it?

Sim is a workspace where teams build AI agents and automated workflows. Agents and workflows can be built visually on a canvas, through conversation, or with code, and they can connect to Slack, Notion, HubSpot, Salesforce, databases and other services through its integrations, which cover over 5,400 actions and 520 triggers.

The workspace also holds the data agents use: tables for structured data, a shared file store, and knowledge bases that agents can search. Runs, logs, schedules and workflow activity can be monitored from the same place. An MCP server lets Claude, Claude Code, Codex and other MCP clients manage workspaces and run workflows.

Sim can be used on the cloud at sim.ai, installed as a macOS desktop app, or self-hosted with Docker. The self-hosting setup is handled by an interactive CLI, and local models can be used through Ollama and vLLM. The project is built with Next.js, Bun, PostgreSQL and Drizzle ORM.

Key features

  • 01Visual, conversational, and code-based agent and workflow building.
  • 02270+ integrations with 5,400+ actions and 520+ triggers.
  • 03Built-in tables, file storage, and knowledge bases for agents.
  • 04Run, log, and schedule monitoring for workflows.
  • 05MCP server for Claude, Codex, and other MCP clients.
  • 06Self-hosting via Docker with local model support through Ollama and vLLM.

Use cases

  • Automating business processes that span Slack, CRM tools and databases.
  • Building a chatbot or agent that searches a team's own documents and knowledge bases.
  • Letting coding agents such as Claude Code manage and run workflows through MCP.
  • Running an AI automation platform on private infrastructure with local models.

Quick start

  1. 1

    Run the self-hosted setup wizard (requires Node.js 20+ and Docker)

    npx sim-setup
  2. 2

    Open the local app in your browser

Things to know

  • Self-hosting requires Docker and a machine with substantial memory (README suggests 12GB+ RAM for the Docker setup).
  • The desktop app is available only for macOS 12+.
  • Some integrations and features depend on the managed Sim Chat service and API keys.

Topics

#ai-agents#workflow-automation#low-code#llm#integrations#mcp#nextjs#typescript#agent-workflow#agentic-workflow

FAQ

What is sim?
Sim is a collaborative workspace for building, deploying, and monitoring AI agents and workflows, with 270+ integrations and support for major LLMs. Sim is a workspace where teams build AI agents and automated workflows. Agents and workflows can be built visually on a canvas, through conversation, or with code, and they can connect to Slack, Notion, HubSpot, Salesforce, databases and other services through its integrations, which cover over 5,400 actions and 520 triggers.
Is sim free to use? What license does it have?
sim is open source under the Apache-2.0 license. Check the license terms before using it in commercial products.
Is sim still maintained?
Actively maintained. The last commit to sim was on Oct 21, 2026.
What can I use sim for?
Automating business processes that span Slack, CRM tools and databases. Building a chatbot or agent that searches a team's own documents and knowledge bases. Letting coding agents such as Claude Code manage and run workflows through MCP. Running an AI automation platform on private infrastructure with local models.
How do I install sim?
Run the self-hosted setup wizard (requires Node.js 20+ and Docker): npx sim-setup Open the local app in your browser
Where can I get sim?
The source code and installation instructions are on GitHub: https://github.com/simstudioai/sim

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