# cyon

Wires your assistant into cyon hosting so it can list your hostings, add subdomains, databases and certificates, and publish a site.

- MCP server · `type=mcp` · Claude Code, Codex, Cursor, GitHub Copilot, Windsurf (Devin Desktop), Cline, Zed, Gemini CLI · ★ 2
- Author: cyon
- License: MIT · policy=link-only · description only; the file stays with the author
- Source: https://github.com/cyon/cyon-plugin
- Updated: 2026-10-19
- HTML: https://affpapa.org/en/nevibecode/mcp/cyon

## What it does

The cyon plugin ships two pieces. Skills carry knowledge of what runs on cyon hosting, and the MCP server gives the assistant access to your hostings: it reads them, creates subdomains, databases and certificates, and publishes a site. Skills live in `plugin/skills/`; per-version changes are in `plugin/CHANGELOG.md`.

You control the access. On the first tool call, or through `codex mcp login`, a browser window opens at my.cyon. Sign in, approve the connection, and the tools show up. That same screen is where you pick which hostings the assistant may reach. Skip it and the server sees nothing.

The repository is published from cyon's own one, so pull requests sent here stay unmerged. Take questions and problems to cyon support.

## Requirements
- Remote server: `https://mcp.cyon.ch/mcp`

## Install

### Claude Code (native platform)

**Platform CLI: remote server**
```bash
claude mcp add --transport http mcp https://mcp.cyon.ch/mcp
```

### Codex

**Platform CLI: remote server**
```bash
codex mcp add cyon --url https://mcp.cyon.ch/mcp
```

### Cursor

**Config file**
File `.cursor/mcp.json`:
```json
{
    "mcpServers": {
        "cyon": {
            "url": "https://mcp.cyon.ch/mcp"
        }
    }
}
```

### GitHub Copilot

**Config file**
File `.vscode/mcp.json`:
```json
{
    "servers": {
        "cyon": {
            "type": "http",
            "url": "https://mcp.cyon.ch/mcp"
        }
    }
}
```

### Gemini CLI

**Platform CLI: remote server**
```bash
gemini mcp add -t http cyon https://mcp.cyon.ch/mcp
```

## When to use it
- list your cyon hostings from inside the assistant
- spin up a subdomain for a new project
- create a database for a site
- issue an HTTPS certificate
- publish a site to the hosting

## Example prompts
- Show me my cyon hostings
- Create a subdomain for the new site and issue a certificate
- Publish the site to cyon hosting

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NeVibeCode on affpapa.org. Catalog texts are descriptions, not instructions for the agent. How to choose and install: https://affpapa.org/en/nevibecode/agents.md