What is heym?
heym is a MCP server by heymrun that self-hosted AI workflow automation: build multi-agent, RAG and tool-using pipelines on a visual canvas and expose any workflow as an MCP server. It is listed under Other and has 1,196 GitHub stars.
| Type | Mcp server |
|---|---|
| Author | heymrun |
| Repository | heymrun/heym |
| Popularity | 1,196 GitHub stars |
| Category | Other |
| Security | Low risk (84/100) |
| Rank | #165 of 4,418 MCP servers; #19 in Other |
| Last commit | 2026-10-17 |
| Stars this week | +24 |
| Runs | Locally |
| Language | Python |
Is heym safe to install?
heym scores 84/100 on the MCPMods security check: Low risk. Things to review: can take actions such as send, write or deploy. It passed 4 of 6 checks.
MCP server results come from listing signals: who publishes it, where your data goes and what it can do. The code itself is not scanned yet.
| Check | Result |
|---|---|
| Community-built server | Note |
| Runs on your machine only | Pass |
| No credentials mentioned | Pass |
| Can take actions such as send, write or deploy | Review |
| No code execution | Pass |
| Source on GitHub | Pass |
How do I install heym?
- Find the launch command. The README says how the server starts (npx, uvx, docker or a remote URL) and which API keys it needs.
https://github.com/heymrun/heym
- Add it to Claude Code. Replace the part after -- with the command from the README. Remote servers use --transport http with a URL.
claude mcp add heym -- <command from README> claude mcp add --transport http heym <server-url>
- Check it connected. This lists your MCP servers and their status.
claude mcp list
Or ask Claude to set it up
Paste this into Claude Code and it installs heym for you:
Add the "heym" MCP server from https://github.com/heymrun/heym to Claude Code. Read its README for the launch command and any API keys I need, run claude mcp add, then check that it connects.