AGENTIC COMMERCE • MODEL CONTEXT PROTOCOL

Turn your website into an MCP server for ChatGPT & Claude

Every Seatext website gets a machine-readable twin. When shoppers ask Claude or ChatGPT to buy your products, Seatext provides verified product targets, variant selections, and instant cart actions—with 1 line of code and zero backend engineering.

Activate WebMCP on Your Site See How It Works
Official MCP Protocol (JSON-RPC 2.0)
Zero API or Webhook Code
100% Payment Safe (Human Checks Out)
Claude in Chrome ↔ acmeshoes.com/mcp
● STREAMING
// 1. Shopper asks Claude: "Find Trail Runner Pro size 15.5 and add to cart"

> POST https://acmeshoes.com/mcp

{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "name": "get_instructions",
    "arguments": {
      "targetId": "prd_831",
      "intent": "select size 15.5 and add to cart"
    }
  }
}
// 2. Seatext compiles deterministic, selector-free action steps

√ 200 OK (12ms)

1. Navigate to /products/trail-runner-pro
2. Wait until "Trail Runner Pro" is visible
3. In size_selector, click option "15.5"
4. Click button labeled "Add to Cart"
5. Verify cart badge displays "1 item"
// 3. Replayed in buyer's real session. Cart is ready!

> Agent: "Done! Trail Runner Pro (15.5) is in your Acme cart."

Zero Developer Weeks

No REST endpoints, OAuth tokens, or webhooks to build. Seatext reads your live DOM and creates your MCP endpoint automatically.

Never Breaks on DOM Changes

Unlike brittle scrapers, Seatext's Page Understanding Engine classifies semantic roles. If your CSS changes, AI actions keep working.

Native Cart & Human Safety

Actions execute inside the buyer's real browser session with real cookies. Terminal state is the cart—humans confirm payment.

THE AGENTIC COMMERCE REVOLUTION

AI assistants are shopping for your customers. Can they interact with your site?

In 2026, millions of buyers use Claude in Chrome, ChatGPT Atlas, Comet, and Operator to find and purchase products. But generic AI agents struggle on JavaScript menus, mis-guess buttons, and get blocked by bot detectors.

Capability Generic AI Web Browsing OpenAI ACP / Shopify UCP SEATEXT WebMCP
Engineering Effort None (unreliable) 2–4 weeks developer time, REST APIs 1 Line of Code (Instant)
DOM & Variant Resilience Breaks on React / CSS updates Requires API updates per schema change Page Understanding Engine auto-adapts
Shopping Cart State Dies when AI session closes Headless server-side cart handover Native browser session & cookies
Discovery & Manifest Guesses HTML tags Requires platform plugin Auto-serves /.well-known/ai-site.json
Payment Security Unsafe credential prompts Stripe / Merchant integration Cart-only boundary; Human confirms checkout
HOW WEBMCP WORKS

Four autonomous layers between your store and external AI agents

From instant discovery to verified browser replay, here is how Seatext makes your website agent-ready.

1

Passive DOM Classification

Seatext indexes product cards, size selectors, color swatches, and add-to-cart buttons into semantic role maps without performance overhead.

2

MCP Protocol Endpoint

Your site automatically hosts /mcp and /.well-known/ai-site.json on your first-party proxy domain with standard JSON-RPC 2.0 tools.

3

Deterministic Planner

When an AI agent requests an action, Seatext translates fuzzy intent into exact role+label steps with verification checkpoints. No CSS selectors.

4

Native Browser Execution

The agent executes the steps or the user opens the signed link. The item is in their real cart, ready for normal human checkout.

BUILT FOR EVERY AI AGENT

Supports Agentic Browsers and Chat-Only Assistants

Whether the shopper uses Claude in Chrome or a mobile ChatGPT chat, WebMCP handles the handoff seamlessly.

MODE A • INSTRUCTOR MODE

For Agentic Browsers (Claude, Atlas, Comet)

The external AI agent drives the browser tab directly. Seatext provides numbered, descriptive instructions (role + visible text) with failure checkpoints. The agent clicks native buttons, and the cart is populated in the user's active session.

  • Zero CSS selector brittleness
  • Instant recovery on out-of-stock sizes
  • Zero changes to checkout flow
MODE B • SIGNED PLAN REPLAY

For Chat-Only Assistants (ChatGPT Mobile)

For assistants without browser automation, WebMCP generates a secure, signed handoff link. When the customer taps the link, seatext.js replays the pre-verified cart actions in their browser in under 300ms.

  • HMAC cryptographically signed plans
  • No server-side cookie sharing risks
  • Customer arrives directly at pre-filled cart
FREQUENTLY ASKED QUESTIONS

Everything you need to know about WebMCP

Model Context Protocol (MCP) is the open standard backed by Anthropic, OpenAI, Microsoft, and Google that allows AI models to safely discover tools and take actions on external services. WebMCP brings native MCP support to any website automatically.
No. Unlike standards like ACP or UCP that demand custom backend REST endpoints and OAuth infrastructure, Seatext WebMCP works from your website's live structure using the Page Understanding Engine. You install one line of code, and your MCP server goes live.
Never. WebMCP enforces strict safety boundaries: tools are strictly limited to searching, selecting options, and populating the shopping cart or lead form. Payment details, passwords, and order finalization are forbidden at the protocol level. The real human customer confirms and completes payment.
WebMCP works on any website or e-commerce platform including Shopify, WooCommerce, Magento, BigCommerce, Webflow, Squarespace, Wix, Next.js, and custom web applications.

Make your website ready for AI shoppers today

Deploy WebMCP in 60 seconds. Let Claude, ChatGPT, and millions of AI assistant users browse, select, and buy from your store effortlessly.

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