One canonical engine. Four doors.

A no-code interactive form. Fill it in and get an instant readiness breakdown. It posts to the same REST engine used by every other door.

On /decision-tools the page registers a page-level WebMCP tool named assess_ai_recommendation_readiness via document.modelContext.registerTool() (falling back to navigator.modelContext). A browser agent that supports WebMCP can discover and call it directly. When no WebMCP host is present, the page degrades gracefully to the REST door.

// Registered on the page (simplified)
document.modelContext.registerTool({
  name: "assess_ai_recommendation_readiness",
  inputSchema: { /* businessSize, dataMaturity, technicalStack, goals */ },
  handler: async (args) =>
    fetch("/api/v1/assess-ai-recommendation-readiness", {
      method: "POST",
      headers: { "Content-Type": "application/json",
                 "X-Interface": "browser_webmcp" },
      body: JSON.stringify(args),
    }).then((r) => r.json()),
});

POST structured JSON. CORS is open (*). An OpenAPI 3.1 description is at /openapi.json.

curl -X POST https://canairecommendmybusiness.com/api/v1/assess-ai-recommendation-readiness \
  -H "Content-Type: application/json" \
  -d '{
  "businessSize": "small",
  "dataMaturity": "developing",
  "technicalStack": "standard",
  "goals": ["ai_visibility", "structured_data"]
}'

A genuine MCP server over Streamable HTTP (JSON-RPC 2.0), protocol revision 2025-06-18. Supports initialize, tools/list, tools/call, and ping.

Initialize:

curl -X POST https://canairecommendmybusiness.com/api/mcp \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"initialize",
       "params":{"protocolVersion":"2025-06-18",
       "capabilities":{},"clientInfo":{"name":"demo","version":"1.0"}}}'

Call the tool:

curl -X POST https://canairecommendmybusiness.com/api/mcp \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":2,"method":"tools/call",
       "params":{"name":"assess_ai_recommendation_readiness",
       "arguments":{"businessSize":"small",
       "dataMaturity":"developing","technicalStack":"standard",
       "goals":["ai_visibility"]}}}'