krexel-mcp

Ship and edit websites from any AI assistant that speaks the Model Context Protocol.

krexel-mcp is the official MCP server for Krexel — a "deploy a website" API for AI agents. Point any MCP-compatible client (Claude Desktop, Cursor, etc.) at this server and you can build, deploy, edit, list, rollback, and inspect sites by talking to your assistant.

Quickstart

Add krexel-mcp to your MCP client configuration:

{
  "mcpServers": {
    "krexel": {
      "command": "npx",
      "args": ["-y", "krexel-mcp"],
      "env": {
        "KREXEL_API_URL": "https://api.krexel.com",
        "KREXEL_API_KEY": "krx_live_…",
        "KREXEL_MASTER_KEY": "<your-32-byte-hex-key>"
      }
    }
  }
}

Restart your client. The assistant now sees nine Krexel tools.

Related MCP server: Demox MCP Server

Tools

Conversational edit-and-deploy workflow

The new update_site tool lets your assistant edit a deployed site conversationally. Each edit counts as 0.1 deploy against the monthly quota (vs. 1.0 for a full ship_site), so a free-tier user can do up to 100 AI edits per month.

The recommended flow:

1. Read the live file via get_current_site(domain="alex.dev"). This returns the file tree, sha256 hashes, and (by default) full contents.

2. Patch the file via update_site(domain, patches=[…]). The patch's find must appear verbatim in the live file — read first, then edit.

3. Verify with list_file_versions(domain, file="about.html") to see the diff your last edit produced.

Example patch op shapes:

{ "op": "create",       "file": "new.html", "content": "<h1>x</h1>" }
{ "op": "replace",       "file": "about.html", "find": "About", "value": "About Us" }
{ "op": "replace_all",   "file": "style.css",  "find": "red",   "value": "blue" }
{ "op": "delete",        "file": "old.html" }

Every patch becomes a real versioned deploy — rollback works the same as for full deploys, and the audit trail records parent_deploy_id for each edit.

All tools take plain JSON arguments and return JSON. Tool schemas are discoverable via the standard MCP tools/list request.

Configuration

State files are written under $KREXEL_HOME (default ~/.krexel/).

License

MIT © Syfer