Update readme for npx

Author: allison-grady

CONTRIBUTING.md

@@ -42,6 +42,10 @@ Use GitHub Issues page to submit issues, enhancement requests and discuss ideas.
 If you're new to our project and looking for some way to make your first contribution, look for
 Issues labelled `good first contribution`.
 
+# Running the MCP server from source
+
+When developing the B2C DX MCP package (`packages/b2c-dx-mcp`), use `node` with the path to `bin/dev.js` in args. Build to latest (`pnpm run build` from the repo root) so auto-discovery works.
+
 # Contribution Checklist
 
 - [x] Clean, simple, well styled code

packages/b2c-dx-mcp/README.md

@@ -22,18 +22,14 @@ The most important flag is **`--working-directory`** (or env var `SFCC_WORKING_D
 
 > **Important:** MCP clients like Cursor and Claude Desktop spawn servers from the home directory (`~`), not your project. Always set `--working-directory`.
 
-When using `"command": "node"`, the shebang in `bin/dev.js` is not run, so the server loads from built `dist/`. **Build the project to latest** (`pnpm run build` from the repo root) so auto-discovery works. Without a fresh build, auto-discovery can fail—notably **Storefront Next** in monorepos like [storefront-next](https://github.com/SalesforceCommerceCloud/storefront-next), because that detector is the only one that walks workspace packages. Optional: add `"env": { "NODE_OPTIONS": "--conditions development" }` to run from source instead (no build needed).
-
-<!-- TODO: Update command to use npx once published to npm -->
-
 **Cursor** (supports `${workspaceFolder}`):
 
 ```json
 {
   "mcpServers": {
     "b2c-dx": {
-      "command": "node",
-      "args": ["/path/to/packages/b2c-dx-mcp/bin/dev.js", "--working-directory", "${workspaceFolder}", "--allow-non-ga-tools"]
+      "command": "npx",
+      "args": ["-y", "@salesforce/b2c-dx-mcp", "--working-directory", "${workspaceFolder}", "--allow-non-ga-tools"]
     }
   }
 }
@@ -45,8 +41,8 @@ When using `"command": "node"`, the shebang in `bin/dev.js` is not run, so the s
 {
   "mcpServers": {
     "b2c-dx": {
-      "command": "node",
-      "args": ["/path/to/packages/b2c-dx-mcp/bin/dev.js", "--working-directory", "/path/to/your/project", "--allow-non-ga-tools"]
+      "command": "npx",
+      "args": ["-y", "@salesforce/b2c-dx-mcp", "--working-directory", "/path/to/your/project", "--allow-non-ga-tools"]
     }
   }
 }