Deploy and Host Sim on Railway

Sim is an open-source platform for building and running AI agent workflows on a visual canvas. You connect LLM blocks, tools, APIs, knowledge bases and more than a hundred integrations, then run workflows on schedules, webhooks or chat, with logs and versioning. It is an alternative to Flowise and n8n for AI-heavy automation.

About Hosting Sim

This template runs the official Sim v0.8.59 images as three services with Railway Postgres (with pgvector) and Redis: sim is the app, realtime is the socket server for collaborative editing, and migrations applies the database schema and exits. Sign-up and login are limited to SIM_ADMIN_EMAIL, and a boot script creates that account with a generated password, so strangers cannot register. Encryption, auth and internal secrets are generated. Workflows, logs and credentials live in Postgres. The app needs about 1 GB of RAM. Add your own LLM API keys in the workspace settings.

Common Use Cases

Building AI agents and chatbots on a visual canvas
Automating workflows that mix LLMs with APIs and databases
Running scheduled or webhook-triggered AI pipelines

Dependencies for Sim Hosting

ghcr.io/simstudioai/simstudio, realtime and migrations at v0.8.59 (official images)
Railway Postgres and Redis

Deployment Dependencies

Implementation Details

Service	Source	Networking	Storage
sim	`ghcr.io/simstudioai/simstudio:v0.8.59`	public domain on 3000	none (state in Postgres)
realtime	`ghcr.io/simstudioai/realtime:v0.8.59`	public domain on 3002	none
migrations	`ghcr.io/simstudioai/migrations:v0.8.59`	none; runs once and exits	none
Postgres	Railway Postgres	private	Railway volume
Redis	Railway Redis	private	Railway volume

Variable (sim)	Default	Purpose
`SIM_ADMIN_EMAIL`	`admin@example.com`	The only email allowed to sign up and log in
`SIM_ADMIN_PASSWORD`	generated	Password of the account created on first boot
`ALLOWED_LOGIN_EMAILS`	`${{SIM_ADMIN_EMAIL}}`	Comma-separated allow-list
`ENCRYPTION_KEY`	generated	Encrypts stored credentials; never change it

Notes:

To add teammates, append their emails to ALLOWED_LOGIN_EMAILS and let them sign up.
The realtime server binds IPv4 only, so the app reaches it through its public domain.
Redeploy migrations after upgrading the image versions.

This is a community-maintained deployment package and does not imply affiliation with or endorsement by Sim Studio.

Why Deploy Sim on Railway?

Railway is a singular platform to deploy your infrastructure stack. Railway will host your infrastructure so you don't have to deal with configuration, while allowing you to vertically and horizontally scale it.

By deploying Sim on Railway, you are one step closer to supporting a complete full-stack application with minimal burden. Host your servers, databases, AI agents, and more on Railway.