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<!-- Source: https://www.lazyweb.com/webmcp/guides -->

# WebMCP guides.

Practical guides to WebMCP and agent-native interfaces.

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8

Collections

8

Last updated

Oct 7, 2026

- [By Ali Abouelatta](https://www.lazyweb.com/authors/ali-abouelatta)
- 8 notes

[Read as Markdown](https://www.lazyweb.com/webmcp/guides.md)

[Newest · Practical guide · Oct 7, 2026 ## A WebMCP analytics implementation checklist Verify tool discovery, invocation, failures, and outcomes without counting your own tests as adoption. Read the note](https://www.lazyweb.com/webmcp/guides/webmcp-analytics-checklist)

7 more notes

## More on webmcp guides

- Primary source guide · Sep 19, 2026
  ### [WebMCP vs MCP-B vs server-side MCP: which layer should a founder choose?](https://www.lazyweb.com/webmcp/guides/webmcp-vs-mcp-b-vs-server-side-mcp)
  A founder decision guide separating the browser WebMCP API, the MCP-B runtime and bridge, and ordinary server-side MCP.
- Primary source guide · Sep 19, 2026
  ### [10 WebMCP resources worth reading](https://www.lazyweb.com/webmcp/guides/webmcp-resources)
  A source-led reading list covering the WebMCP proposal, Chrome's current experiment, MCP-B, server-side MCP, and OpenAI's documented Site Tools surface.
- Guide · Sep 19, 2026
  ### [How do you diagnose a tool that works behind a Chrome flag but not in an origin trial?](https://www.lazyweb.com/webmcp/guides/diagnose-webmcp-flag-versus-origin-trial-failure)
  A deployment-first checklist for separating local WebMCP flag success from origin-trial, token, response, and page-policy failures.
- Guide · Sep 19, 2026
  ### [Which MCP transport should a new remote server choose: stdio, Streamable HTTP, or legacy SSE?](https://www.lazyweb.com/webmcp/guides/choose-mcp-transport-for-a-new-remote-server)
  A founder-facing transport decision for local servers, hosted MCP services, and named legacy-client compatibility.
- Guide · Sep 19, 2026
  ### [How can a CDN or WAF break Streamable HTTP even when JSON-RPC works locally?](https://www.lazyweb.com/webmcp/guides/debug-streamable-http-behind-a-cdn-or-waf)
  A safe edge-debugging runbook for methods, headers, buffering, timeouts, request bodies, Origin checks, and scoped proxy changes.
- Guide · Sep 19, 2026
  ### [Shopify Cart MCP or Checkout MCP: where should a merchant require credentials?](https://www.lazyweb.com/webmcp/guides/shopify-cart-or-checkout-where-credentials-begin)
  A documentation-derived commerce guide separating anonymous exploration, checkout preparation, purchase permission, and merchant handoff.
- Guide · Sep 19, 2026
  ### [Which cross-origin iframe cases require allow=tools and which must fail?](https://www.lazyweb.com/webmcp/guides/cross-origin-iframe-webmcp-allow-tools-matrix)
  A permission-boundary guide for top-level, same-origin, and cross-origin WebMCP frames, with safe policy and authorization checks.