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How to self-host an AI agent workflow builder with Sim

Run the setup wizard to get the whole Sim stack on your own machine with Docker Compose, then build agents in the browser.

Short answer: Make sure Node.js 20+ and Docker are installed; then run npx sim-setup, which creates a sim/ deployment directory, provisions the database, generates secrets and writes .env; open http://localhost:3000 when the wizard finishes. All steps.

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Credentials. The wizard writes generated secrets and your Chat API key into .env; keep that directory private and out of version control.

Who it is forAn ops or platform engineer who wants agent workflows without sending data to a hosted service.

The problemCloud workflow tools keep your data and credentials on someone else's servers.

The outcomeSim running at localhost:3000 with its database, secrets and Chat API key configured.

What you need first

  • Node.js 20+ and Docker for self-hosting
  • A Chat API key for the model provider, or local models via Ollama or vLLM
  • Or the hosted cloud at sim.ai

Steps

  1. Make sure Node.js 20+ and Docker are installed
  2. Run npx sim-setup, which creates a sim/ deployment directory, provisions the database, generates secrets and writes .env
  3. Open http://localhost:3000 when the wizard finishes
  4. Check health with npx sim-setup status and diagnose problems with npx sim-setup doctor

Prompt for your agent

Using simstudioai/sim, self-host it with `npx sim-setup` on this machine, then confirm it is healthy with `npx sim-setup status` and tell me the URL to open.

Caveat. The wizard does not clone the repository; source-only local development and Kubernetes modes need `bun run sim-setup` inside a clone.

Use this in your AI agent

Ask your agent

Using the Deduped MCP, get the setup steps for simstudioai/sim and "Self-host an AI agent workflow builder"

Add Deduped to Claude Code once

claude mcp add --transport http deduped https://dedupedai.com/mcp

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