docs(mcp-server): add Smithery connection guide (#41)

* docs(mcp-server): add Smithery connection guide

* docs: update code samples from OpenAPI

* docs: Clarify Smithery proxy connection text

* docs(mcp-server): clarify Smithery URL copy step

* style: Update Python comment style in example

---------

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: masnwilliams

browsers/profiles.mdx

@@ -62,8 +62,8 @@ const kernelBrowser = await kernel.browsers.create({
 kernel_browser = await kernel.browsers.create(
     profile={
         "name": "profiles-demo",
-        // or
-        // "id": profile.id,
+        # or
+        # "id": profile.id,
         "save_changes": True,
     }
 )

reference/mcp-server.mdx

@@ -145,6 +145,20 @@ Click [here](goose://extension?cmd=npx&arg=-y&arg=mcp-remote&arg=https%3A%2F%2Fm
 }
 ```
 
+### Smithery
+
+You can connect directly to `https://mcp.onkernel.com/mcp`, or use Smithery as a proxy using its provided URL.
+
+- Use Smithery URL in any MCP client:
+  1. Open [Smithery: Kernel](https://smithery.ai/server/kernel).
+  2. Copy the URL from "Get connection URL".
+  3. Paste it into your MCP client's "Add server" flow.
+
+- Use Kernel in Smithery's Playground MCP client:
+  1. Open [Smithery Playground](https://smithery.ai/playground).
+  2. Click "Add servers", search for "Kernel", and add it.
+  3. Sign in and authorize Kernel when prompted.
+
 ### Others
 
 Many other MCP-capable tools accept: