cyon — Claude Code MCP server: sites, domains, databases
Wires your assistant into cyon hosting so it can list your hostings, add subdomains, databases and certificates, and publish a site.
claude mcp add --transport http mcp https://mcp.cyon.ch/mcpWhat cyon 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.
What it helps with
- 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 for the agent
- Show me my cyon hostings
- Create a subdomain for the new site and issue a certificate
- Publish the site to cyon hosting
How to install cyon
Platform CLI: remote server
claude mcp add --transport http mcp https://mcp.cyon.ch/mcpPlatform CLI: remote server
codex mcp add cyon --url https://mcp.cyon.ch/mcpConfig file
{
"mcpServers": {
"cyon": {
"url": "https://mcp.cyon.ch/mcp"
}
}
}Config file
{
"servers": {
"cyon": {
"type": "http",
"url": "https://mcp.cyon.ch/mcp"
}
}
}Platform CLI: remote server
gemini mcp add -t http cyon https://mcp.cyon.ch/mcpStep by step, with commands for each platform: How to add an MCP server to Claude Code, Codex, Cursor, VS Code, Gemini CLI and more
Questions about cyon
How do I install cyon in Claude Code?
Add the marketplace with claude plugin marketplace add cyon/cyon-plugin, then install the plugin with claude plugin install cyon@cyon.
What does cyon do?
Skills describe what runs on cyon hosting, while the MCP server lets the assistant reach your hostings: read the list, create subdomains, databases and certificates, publish a site.
What has to happen before the server works?
You approve the connection in the browser at my.cyon, either on the first tool call or via codex mcp login. The same screen sets which hostings the assistant can reach.
