Provide tag instead of master branch

Author: Polygon

README.md

@@ -50,7 +50,7 @@ path to `uvx`.
 
 ```bash
 # Claude CLI
-claude mcp add polygon -e POLYGON_API_KEY=your_api_key_here -- uvx --from git+https://github.com/polygon-io/mcp_polygon@master mcp_polygon
+claude mcp add polygon -e POLYGON_API_KEY=your_api_key_here -- uvx --from git+https://github.com/polygon-io/mcp_polygon@v0.1.0 mcp_polygon
 ```
 
 This command will install the MCP server in your current project.
@@ -81,7 +81,7 @@ Make sure you complete the various fields.
             "command": "<path_to_your_uvx_install>/uvx",
             "args": [
                 "--from",
-                "git+https://github.com/polygon-io/mcp_polygon@master",
+                "git+https://github.com/polygon-io/mcp_polygon@v0.1.0",
                 "mcp_polygon"
             ],
             "env": {