WebCake Storefront MCP

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Describe a store page in plain words — your AI builds it, validates it, and publishes it to your WebCake storefront.

⭐ If this saves you an afternoon of dragging blocks around, give it a star — every star keeps a solo project alive.

"Build a page for my coffee shop — a hero with a Shop Now button, a product grid, and an order form. Save it and publish."

…and a real, editable page appears on your WebCake/StoreCake site. No dragging blocks, no learning the schema, no hand-writing JSON.

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🧩 How it works

This server is the bridge between your AI assistant and your storefront. The AI never guesses what a page looks like — it asks this MCP, which knows the entire BuilderX component model, validates the result, and saves it.

   You              AI assistant          webcake-storefront MCP          WebCake / StoreCake
  ┌──────┐  prompt  ┌────────────┐  tools ┌───────────────────────┐  API ┌──────────┐
  │ idea │ ───────► │  Claude /  │ ─────► │ • knows the BuilderX  │ ───► │  a real  │
  │      │          │  Cursor /  │        │   component model     │      │ editable │
  │      │ ◄─────── │  Windsurf  │ ◄───── │ • builds + validates  │ ◄─── │  page on │
  └──────┘ live URL └────────────┘ result │ • saves + publishes   │      │ your site│
                                          └───────────────────────┘      └──────────┘

1. You ask in plain language — goal, brand, sections, products, form fields.
2. The AI learns the model from the MCP: the element catalog, the CSS-grid layout, the breakpoints — so it builds a real storefront page, not a guess.
3. It assembles + validates the { sections: [...] } page source. validate_page catches duplicate ids, broken grids, and form fields without a name before anything is saved.
4. It saves to your site — dry-run preview first, then for real — and publish_site makes it live.
5. You get the preview URL — open it, tweak in the editor, done.

Why it's reliable

📚 Knows the real model	Serves 130+ BuilderX component types (text, image, button, form, product grid, cart, countdown, gallery…) ported straight from the builder's own factory — the exact same shapes the editor produces.
✅ Validates before saving	Structural checks (unique ids, valid grid, form fields with names, working event targets) so the page isn't broken when it lands.
🛡️ Safe by default	Every write is dry-run first — preview the change, nothing touches your site until you confirm.
✏️ Edits surgically	Ask for one change ("make the CTA green") and it edits only that element — every other id, style, and block stays exactly as it was.

💡 Selling COD or online? It speaks the full commerce model too — products, variations, cart, orders, promotions, combos.

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✨ What you can build

One sentence to your AI → a finished, editable storefront page:

	Just say…
🛒 Product page	"A one-product page for my skincare serum — gallery, price, an order form with cart."
🏬 Storefront home	"A homepage — hero banner, featured product grid, a newsletter form."
⚡ Flash sale	"A flash-sale page — big countdown, discounted product grid, a sticky Buy button."
🎟️ Event / webinar	"A registration page — countdown, agenda, a sign-up form."
💌 Invitation	"A wedding invite — names, date, a map, an RSVP form."
📰 Blog / content	"A blog index with featured posts and a subscribe box."
🔗 Link-in-bio	"A link-in-bio — avatar, short bio, 5 link buttons, socials."

…then "make the CTA green" or "add a 4th feature" and it edits only that block.

🤖 Works in Claude Desktop, Claude Code, Cursor, Windsurf, VS Code, or any MCP-capable client — and the build guide + element catalog tools need zero backend calls, so you can explore the model before pasting a token.

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Under the hood

An MCP (Model Context Protocol) server that teaches AI agents the WebCake/StoreCake storefront builder (BuilderX) component model and connects them to the backend. The AI produces the full { sections: [...] } page source; build_page creates the page and saves it, and publish_site makes the whole site live.

Beyond page authoring, it exposes your real store: pages & custom code, products, orders, collections, blog articles, promotions, combos, themes, customers, and automation — ~280 tools in total.

Method	Best for	Auth
npx (local) — runs on your machine	Personal daily use, full control	browser login, or a token + session
Remote (serve) — self-host Streamable-HTTP	Teams, the claude.ai dialog, always-on	?jwt= link / x-webcake-jwt header

The build + catalog tools (get_build_guide, list_elements, get_element, new_section, validate_page) work with zero config; everything that reads or writes your site needs a token + session.

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🚀 Get connected

Pick one. Both hand your AI tool the full storefront toolkit. No coding.

① npx — runs on your machine (recommended)

Zero install, always the latest version, needs Node.js 18+. One line configures your IDE:

# Interactive — pick your IDE(s) and paste your credentials
npx -y webcake-storefront-mcp install

# Non-interactive — configure every supported IDE at once
npx -y webcake-storefront-mcp install --ide all --token <token> --session <session-id>

# Remove the server from every IDE config
npx -y webcake-storefront-mcp uninstall

Targets: claude-desktop, claude-code, cursor, windsurf, vscode, or all. Just want to run the server (configure by hand)? npx -y webcake-storefront-mcp.

② Browser login — no token copy/paste

npx -y webcake-storefront-mcp login

Opens the builder's connect page; click Connect and your token + session are saved locally and picked up automatically.

Remote URL — self-hosted, nothing per-client to install

npx -y webcake-storefront-mcp serve --port 8787

Then point any client at http://<host>:8787/mcp?jwt=<TOKEN> (clients that support headers can send x-webcake-jwt instead; pick the site in chat with switch_site). Server-side secrets like PEXELS_API_KEY live on the host — handy on a VPS.

⚠️ A ?jwt= link contains your personal token — treat it like a password and use HTTPS in production.

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⚙️ Configuration

Two values are required: WEBCAKE_TOKEN (Bearer JWT) and WEBCAKE_SESSION_ID (sent as x-session-id). You pick the site at runtime — just ask in chat and the AI calls list_my_sites / switch_site (your choice is saved and reused next session), so no WEBCAKE_SITE_ID is needed.

Base URLs come from a named environment — set WEBCAKE_ENV (or --env) and you never type a URL:

WEBCAKE_ENV	api	app (login)	preview
local	http://localhost:24679	http://localhost:5173	demo.localhost:24679/<siteId>
staging	https://api.staging.storecake.io	https://staging.webcake.io	staging2.webcake.me/<siteId>
prod (default)	https://api.storefront.webcake.io	https://webcake.io	<site_slug>.webcake.me

Override a preset with WEBCAKE_API_URL / WEBCAKE_APP_URL. Optional, configured server-side: PEXELS_API_KEY (search_images). Token / session / site can also be set in chat via update_auth and switch_site — saved to a local config file at ~/.webcake-storefront-mcp/.

1. Open the WebCake builder and log in.
2. Open DevTools (F12) → Network tab → click any API request.
3. In Request Headers: Authorization: Bearer … → WEBCAKE_TOKEN; x-session-id: … → WEBCAKE_SESSION_ID.
4. No site id needed up front — in chat, run list_my_sites then switch_site to choose the site (remembered next time).

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🧰 The tools at a glance

~280 tools. The headline group builds pages; the rest read and edit your live store.

Group	Tools	Needs
Build a page	get_build_guide · list_elements · get_element · new_element · new_section · new_page_skeleton · validate_page · build_page · add_section	catalog tools: nothing
Media & ingest	search_images (Pexels) · upload_images (CDN) · ingest_html · ingest_url (recreate a reference page)	—
Pages & code	list_pages · get_page_source · search_page_elements · get_page_element · update_page_element(s) · create_page · update_page · update_page_source · custom CSS/JS · page contents · global sections · publish_site	token + session
Commerce	products · orders · collections · promotions · combos	token + session
Content & store	blog articles · themes / site style · apps · customers · send_mail	token + session
Backend code	HTTP-function CRUD (get_http_function, edit_http_function, run_function, debug_function…)	token + session
Context	get_current_context · list_my_sites · switch_site · update_auth · toggle_confirm_mode	token

Every write defaults to dry_run=true — it previews the exact change and only touches your site when you re-run with dry_run=false.

💬 Suggested prompt

Build me a WebCake storefront page for <brand/offer>. Use the webcake-storefront MCP: call get_build_guide, list_elements, build the sections with new_section, validate_page until zero errors, then build_page (dry-run first) and publish_site.

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⭐ Like the idea? Drop a star

This is a solo, open-source project — every ⭐ genuinely keeps it moving and helps other builders find it.

• ⭐ Star the repo — 2 seconds, huge motivation.
• 🐛 Open an issue — a bug, a missing component, or just an idea.
• 🔁 Share it with anyone still building store pages block by block.

Built with ❤️ for the WebCake community. Thanks for being here.