Sim Unifies Agent Building, Governance, and MCP in One Open-Source Workspace
Sim is an open source AI agent workspace with 30k+ GitHub stars and 100k+ builders. Ships 270+ integrations, 5,400+ actions, and 520+ triggers across every major LLM. Unifies visual workflow builder, Tables, Files, Knowledge bases, and run Logs in one app.
Takeaways
- Sim is an open source AI agent workspace with 30k+ GitHub stars and 100k+ builders.
- Ships 270+ integrations, 5,400+ actions, and 520+ triggers across every major LLM.
- Unifies visual workflow builder, Tables, Files, Knowledge bases, and run Logs in one app.
- Exposes an MCP server at mcp.sim.ai so Claude Code or Codex can drive workflows.
- Self hostable via
npx sim-setupwith Docker, Kubernetes Helm charts, and Ollama or vLLM support. - Apache 2.0 licensed, built on Next.js, Bun, PostgreSQL, Drizzle, and ReactFlow.
A production AI agent often depends on separate tools for orchestration, vector search, scheduling, observability, and SaaS integrations. Sim on GitHub combines those functions in an open-source workspace for building, deploying, and monitoring agents. The project has passed 30,000 GitHub stars and reports more than 100,000 builders.
Sim also provides centralized controls for model access, permissions, spending, and data. Its recent Model Context Protocol support extends those capabilities to Claude Code, Codex, and other MCP clients, allowing coding agents to create, deploy, run, and inspect workflows from a terminal.
One workspace, fewer moving parts
Sim is a TypeScript monorepo built with Next.js, Bun, PostgreSQL, Drizzle, and ReactFlow. Teams can construct agents through a visual canvas, conversational instructions, or code.
| Capability | What Sim includes |
|---|---|
| Integrations | More than 270 integrations, 5,400 actions, and 520 triggers across services such as Slack, Notion, HubSpot, Salesforce, and databases |
| Models | Support for major hosted LLMs, plus local models through Ollama and vLLM |
| Data | Tables for structured records, Files for shared inputs and outputs, and Knowledge for document retrieval |
| Operations | Schedules, workflow activity, run history, and block-level trace logs |
Reporting is indexed from AlphaSignal. Rights remain with the original publisher and cited sources.
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