{
  "id": "webmcp.watch",
  "protocol": "webmcp",
  "layer": "checkout",
  "role": "merchant",
  "status": "optional",
  "title": "Watch WebMCP for in-browser agent checkout",
  "description": "WebMCP is a proposed web standard: a page registers structured tools, such as checkout, that an AI agent in the user's browser can call, via a JavaScript (imperative) or annotated HTML form (declarative) API. Both are gated by the tools Permissions Policy.",
  "goal": "Lets browser agents complete actions on your site through defined tools instead of guessing at the UI.",
  "note": "Chrome origin trial from Chrome 149; under active discussion and subject to change. Chrome says it is primarily designed for local browser workflows with a human in the loop. Shopify checkout supports WebMCP tools since 28 Sep 2026 with no merchant configuration.",
  "how_to_implement": {
    "steps": [
      "On Shopify: nothing to configure for checkout tools.",
      "Elsewhere: read the Chrome docs and consider the origin trial before building."
    ]
  },
  "resources": [
    {
      "label": "Chrome for Developers: WebMCP",
      "url": "https://developer.chrome.com/docs/ai/webmcp",
      "type": "docs",
      "publisher": "Google Chrome"
    },
    {
      "label": "Shopify changelog: WebMCP support for checkout (28 Sep 2026)",
      "url": "https://shopify.dev/changelog/posts/webmcp-support-for-checkout",
      "type": "announcement",
      "publisher": "Shopify"
    }
  ],
  "audit": {
    "method": "manual",
    "automatable": false,
    "human": "Check the Chrome WebMCP docs for the current origin trial status."
  },
  "how_to_verify": "Check the Chrome WebMCP docs for the current origin trial status.",
  "artifacts": [],
  "depends_on": [],
  "status_note": "Chrome origin trial from Chrome 149; under active discussion and subject to change. Chrome says it is primarily designed for local browser workflows with a human in the loop. Shopify checkout supports WebMCP tools since 28 Sep 2026 with no merchant configuration.",
  "verified": true,
  "slug": "webmcp-watch",
  "category": "checkout",
  "url": "https://vreeman.ai/commerce/checklist#webmcp.watch",
  "updated": "2026-10-19",
  "sources": [
    {
      "label": "Chrome for Developers: WebMCP",
      "url": "https://developer.chrome.com/docs/ai/webmcp",
      "type": "docs",
      "publisher": "Google Chrome"
    },
    {
      "label": "Shopify changelog: WebMCP support for checkout (28 Sep 2026)",
      "url": "https://shopify.dev/changelog/posts/webmcp-support-for-checkout",
      "type": "announcement",
      "publisher": "Shopify"
    }
  ],
  "related_slugs": []
}