workflowstacks
claude-skill

Sim: AI Workforce Automation

Get a central intelligence layer for your AI workforce with Sim, ideal.
intermediateโฑ 30 minutes๐Ÿ’ต Free + self-hosted
29,627 stars3,826 forksTypeScriptGuide quality 8/10 ยท reviewed Jun 1Updated 9/14/2026100% free ยท open source
What it is

Build, deploy, and manage AI agents with Sim to automate tasks.

Real use case example

"A founder, Alex, uses Sim to automate onboarding for new customers. She creates a Sim agent that triggers when a new customer signs up on Stripe. The agent adds the customer to Notion and sends a welcome email via Resend. In just a few clicks, Alex saves time and improves the customer experience."

Best insideClaude DesktopSelf-hosted
When to use it
  • โ€ขWhen you need to integrate multiple AI models into a single workflow
  • โ€ขWhen you want to automate decision-making processes using AI
  • โ€ขWhen you require a scalable platform to manage your AI operations
Ready-to-paste prompt
const sim = new Sim({ workflow: 'my_workflow' }); sim.start();
Saves to your device
Use with Claude
New

Skip the builder โ€” one click puts this in Claude, Cursor, Antigravity and more.

โšก Runs out of the box

A prompt/skill package โ€” nothing to install beyond adding it to your AI tool.

Try it instantly โ€” no install
Claude Code
mkdir -p ~/.claude/skills/sim && curl -fsSL https://workflowstacks.com/api/skills/sim/claude-skill -o ~/.claude/skills/sim/SKILL.md
Open in another AI app

Opens the app with this repo with the prompt ready to go โ€” no copy-paste needed.

Connect the whole catalog (MCP)
claude mcp add --transport http workflowstacks https://workflowstacks.com/api/mcp

Adds a WorkflowStacks connector to Claude Code: search and load any skill here by chatting.

How Sim: AI Workforce Automation works
Codeflow
Free to inspect

Sim: AI Workforce Automation is a very large TypeScript project (~2.7M lines across 15792 code files, plus 126 test files). It is a full software project: use it through its install path rather than reading it end to end. Last commit this month, Apache-2.0 license, has a test suite.

Size
Very large codebase
~2.7M lines ยท 15792 code files ยท days to read โ€” use, don't read
Setup
Developer setup
A real software project. Use it via its install path; don't expect to read it all.
Runs on
Node.js
No API keys detected
TypeScript 83%MDX 15%JavaScript 1%
Where to start reading
  1. 1
    README.md
    Start here โ€” what it does and how to install it
  2. 2
    AGENTS.md
    The instructions the AI actually follows
  3. 3
    package.json
    Dependencies and the commands it exposes
  4. 4
    apps/sim/blocks/index.ts
    Inside apps/sim/ โ€” the main logic begins here
What's in each folder
apps/sim/Core code โ€” the actual logic15021 files
packages/Sub-packages / plugins1307 files
apps/docs/Documentation1759 files
apps/desktop/Package154 files
helm/Deployment / infrastructure75 files
scripts/Helper scripts64 files
apps/realtime/Package52 files
docker/Deployment / infrastructure7 files
READMEHas testsDocumentedCI checksApache-2.0 licenseUpdated this month
Quick Actions
Details
Creator
simstudioai
Language
TypeScript
Category
claude-skill
Published
1/5/2025

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Show it off in your README:

Featured on WorkflowStacks
[![Featured on WorkflowStacks](https://workflowstacks.com/api/badge/sim.svg)](https://workflowstacks.com/skills/sim?utm_source=github&utm_medium=badge)
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Do this with a working workflow

Pages we wrote and tested that put a skill like this to work โ€” importable n8n templates, outcome guides and Claude Desktop configs.

Outcome guide

Triage your inbox automatically

The workflow watches your inbox and classifies each new email by priority with a one-line reason and a draft reply, logging everything to a ranked sheet. You open your day to a triaged list, not a pile.

Free n8n template

Inbox Reply Triage

Classify every incoming email โ€” Hot lead / Needs reply / FYI / Ignore โ€” with a reason and a suggested reply, logged to a ranked sheet so you never miss what matters.

MCP config

Playwright (browser) MCP config

Drive a real browser for testing and automation from Claude.

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