W-21260424 Update documentation for mcp config discrepancy (#164)

* W-21260424 Update documentation

* Reword readme

* Update readme for npx

* Update contributing doc for clarity

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 changes that require a rebuild are reflected when you run the server.
+
 # Contribution Checklist
 
 - [x] Clean, simple, well styled code

packages/b2c-dx-mcp/README.md

@@ -22,16 +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`.
 
-<!-- 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"]
     }
   }
 }
@@ -43,8 +41,8 @@ The most important flag is **`--working-directory`** (or env var `SFCC_WORKING_D
 {
   "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"]
     }
   }
 }