fix: add tool instructions and update readme

Author: rushilpatel0

src/codegen/cli/mcp/README.md

@@ -0,0 +1,42 @@
+# Codegen MCP server
+
+A MCP server implementation that provides tools and resources for using and working with the Codegen CLI and SDK, enabling AI agents to iterate quickly on writing codemods with the codegen sdk.
+
+### Dependencies
+
+- [fastmcp](https://github.com/codegen-sh/fastmcp)
+
+## Usage
+
+Most AI Agents that support MCP will have some way to configure the server startup. 
+### Cline
+Add this to your `cline_mcp_settings.json` file to get started:
+```
+{
+  "mcpServers": {
+    "codegen-cli": {
+        "command": "uv",
+        "args": [
+            "--directory",
+            "<path to codegen installation>/codegen-sdk/src/codegen/cli/mcp",
+            "run",
+            "server.py"
+        ]
+    }
+  }
+}
+```
+
+Cursor:
+Under the `Settings` > `Feature` > `MCP Servers` section, click "Add New MCP Server" and add the following:
+
+```
+Name: codegen-mcp
+Type: Command
+Command: uv --directory <path to codegen installation>/codegen-sdk/src/codegen/cli/mcp run server.py
+```
+
+
+
+
+

src/codegen/cli/mcp/server.py

@@ -5,7 +5,8 @@
 from codegen.cli.mcp.resources.system_prompt import SYSTEM_PROMPT
 from codegen.cli.utils.constants import ProgrammingLanguage
 # Initialize FastMCP server
-mcp = FastMCP("codegen-mcp")
+
+mcp = FastMCP("codegen-mcp", instructions="MCP server for the Codegen SDK. Use the tools and resources to setup codegen in your environment and to create and improve your Codegen Codemods.")
 
 # ----- RESOURCES -----