# Launch Rhino

> Start a single Rhino MCP session. Accepts a version argument (e.g. `8`, `WIP`) and an optional explicit port. Walks forward from `10500` to pick a free port if none was given. On macOS this opens a new document in the running Rhino; on Windows it launches a new Rhino process. Use when the user asks to start a Rhino MCP session — for N parallel Rhinos use `/launch-rhinos` instead.

- Skill: `hybridlabor-api/launch-rhino` (Agent Skill)
- Install (CLI): `npx skillmds@latest add hybridlabor-api/launch-rhino`
- Raw SKILL.md: https://api.skillmd.com/api/skills/hybridlabor-api/launch-rhino/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: AI & ML
- Author: hybridlabor-api (https://skillmd.com/u/hybridlabor-api)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/hybridlabor-api/launch-rhino

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# Launching a Rhino MCP session

Follow the procedure in the [`/launch-rhino`](../../commands/launch-rhino.md) slash command. It owns the full launch flow — port selection, OS branch, listener wait, and reporting. Pass through the version argument (`8`, `WIP`, `9`); default to `8`. If a port was provided as the second argument, pass that through too and skip the port probe. Relay the assigned port back to the user.