Document MCP config

Author: TolinSimpson

README.md

@@ -84,15 +84,35 @@ To demo search output:
 python vc-database/vcdb.py --demo-search add numbers
 ```
 
-### 2) Run the JavaScript interpreter smoke test
+### 2) Start the MCP server
+
+Requires the `mcp` Python package (`pip install mcp`). From the repo root:
+
+```bash
+python vc-database/mcp_server.py
+```
+
+This starts a stdio MCP server exposing the vectorizer to LLM agents. To connect it to an MCP client, add the following to your MCP server config:
+
+```json
+{
+  "vc-database": {
+    "command": "python",
+    "args": ["vc-database/mcp_server.py"],
+    "env": {}
+  }
+}
+```
+
+### 3) Run the JavaScript interpreter smoke test
 
 From the repo root:
 
 ```bash
 node vcs-js/smoke-test.js
 ```
 
-### 3) (Optional) Run the browser demo
+### 4) (Optional) Run the browser demo
 
 Open `vcs-js/index.html` in a browser.