MCP Server (vulk-mcp-server)
VULK's official Model Context Protocol server, published on npm as vulk-mcp-server. Lets Claude Desktop, Cursor, and any MCP client create, edit and deploy VULK projects with an API key.
MCP Server (vulk-mcp-server)
vulk-mcp-server is VULK's implementation of the Model Context Protocol — Anthropic's open standard for connecting AI clients (Claude Desktop, Claude Code, Cursor, Windsurf, VS Code) to external tools. The server exposes VULK as a set of MCP tools: create_project, edit_project, generate_immersive_site, create_visual_brief, list_projects, get_project, get_project_files, deploy_project, list_models, get_usage and subscribe. The client invokes these tools, the server calls the VULK API with your API key, and the result comes back into the client's chat.
VULK ships vulk-mcp-server on npm as the canonical package name (do not use forks). It runs through npx -y vulk-mcp-server, so nothing is installed globally. Add it to the client's MCP settings with your VULK_API_KEY, and you can say "build me a Stripe-style pricing page" inside Claude Desktop and the project appears in your VULK dashboard. API keys are available on Team, Max, Business and custom enterprise plans.
There is a second way to connect that needs no package and no API key: add https://app.vulk.dev/mcp as a remote MCP server in your assistant and sign in to VULK. That connection can read your projects, plan, credits and usage, create a project or send the next instruction to one (using your plan's credits, as the editor does), read how a request is going and stop it. It cannot publish a site, buy credits, change your plan or delete a project, and you can remove it at any time in Settings › Integrations › Connected apps. See MCP Integration for both, and /docs/integrations/overview.
Refund on Quality-Gate Failure
VULK's policy of automatically refunding the credits a generation cost if the 10-step quality gate cannot be passed after autofixer retries. The user is never billed for a broken project.
Firecracker microVM Preview
VULK's live preview system — every generated project runs in an isolated Firecracker microVM with sub-second cold-start, full Node + Vite, and a public URL. Replaces fragile WebContainer / iframe sandboxes.