Krexel

Ship AND edit static sites from any AI assistant that speaks the Model Context Protocol.

krexel-mcp is the official MCP server for Krexel — a "your AI ships and edits your live site" API. Point any MCP-compatible client (Claude Desktop, Cursor, Windsurf, VS Code) at this server and your assistant can deploy, list, edit, rollback, and inspect sites just by talking.

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.

Tools

Tool	What it does
ship_site	Upload a built site folder. Returns a deploy_id and preview URL.
edit_file	Patch a deployed site (create / replace / replace_all / delete). 0.1 deploy.
list_files	List the files in a deployed site (path + size + sha256).
read_file	Read one file's content from a deployed site.
list_deploys	List recent deploys from local state. Optional domain filter.
get_logs	Fetch build logs for a deploy.
rollback	Mark a previous deploy as the current good version.
set_env	Encrypt and persist an env var for a domain (AES-256-GCM).
get_status	Return account, deploy count, plan, and state directory.

The conversational-edit flow

1. AI calls list_files(deploy_id) to see what files exist on the site.
2. AI calls read_file(deploy_id, path) to read the file it wants to change.
3. AI generates the new content itself, then calls edit_file(deploy_id, op: "replace", file, find, value, message).
4. Krexel ships the patch as a new deploy — live in ~8 seconds, 0.1 deploy against the customer's quota. The new deploy_id and parent_deploy_id are returned so the AI can chain further edits on top.

The AI is the brain. Krexel is the hands.

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

Configuration

Env var	Required	Default	Notes
KREXEL_API_URL	no	http://localhost:8787	Base URL of the Krexel orchestrator API.
KREXEL_API_KEY	yes	—	Account API key (minted at krexel.com/signup). Forwarded as `Authorization: Bearer *** to every API call.
KREXEL_MASTER_KEY	yes*	—	32-byte hex string for env-var encryption. *Required for set_env.

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

License

MIT © Syfer