WebMCP Reality Check: Where the Spec Actually Stands

Last month our r/mcp post comparing MCP, REST, and WebMCP hit 18,000 views in 24 hours. Hundreds of devs asked the same question in the comments: when can my agent actually call a WebMCP tool on a real website? I went and checked. We also audited our own implementations, the ones we've been shipping on customer hotel sites, immobilien pages, and the AI-Ready WP Pro plugin. The answer is interesting than "soon." Here's where the spec stands in May 2026, why no major agent calls it yet, and what we found when we audited our own code.