From 9b1b399565098eaeb37dfc0a44b44028bbdd3e3c Mon Sep 17 00:00:00 2001
From: Dharshana-Belraj <dharshanabelraj@gmail.com>
Date: Fri, 18 Jul 2025 22:48:08 +0530
Subject: [PATCH] Add .env file support for local development

- Add python-dotenv dependency for loading environment variables from .env files
- Create .env.example template with all required and optional variables
- Update README.md with local development section and .env usage instructions
- Maintains full backward compatibility with existing environment variable setup
- Improves developer experience for local development and testing
---
 README.md                         | 19 +++++++++++++++++++
 requirements.txt                  |  1 +
 src/mysql_mcp_server/.env.example |  8 ++++++++
 src/mysql_mcp_server/server.py    |  3 +++
 4 files changed, 31 insertions(+)
 create mode 100644 src/mysql_mcp_server/.env.example

diff --git a/README.md b/README.md
index f517802..5ab536f 100644
--- a/README.md
+++ b/README.md
@@ -36,6 +36,25 @@ MYSQL_PASSWORD=your_password
 MYSQL_DATABASE=your_database
 ```
 
+## Local Development with .env Files
+For local development, you can use a .env file instead of setting environment variables manually:
+
+Copy .env.example to .env:
+``` bash
+ cp .env.example .env
+
+# Edit .env with your database credentials:
+MYSQL_HOST=localhost
+MYSQL_PORT=3306
+MYSQL_USER=your_username
+MYSQL_PASSWORD=your_password
+MYSQL_DATABASE=your_database
+```
+The server will automatically load these variables when starting
+
+
+Note: The .env file is for local development convenience. In production or when using Smithery, continue to use environment variables as documented above.
+
 ## Usage
 ### With Claude Desktop
 Add this to your `claude_desktop_config.json`:
diff --git a/requirements.txt b/requirements.txt
index 604e871..2310240 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,3 @@
 mcp>=1.0.0
 mysql-connector-python>=9.1.0
+python-dotenv>=1.0.0
\ No newline at end of file
diff --git a/src/mysql_mcp_server/.env.example b/src/mysql_mcp_server/.env.example
new file mode 100644
index 0000000..08233a7
--- /dev/null
+++ b/src/mysql_mcp_server/.env.example
@@ -0,0 +1,8 @@
+MYSQL_HOST=localhost
+MYSQL_PORT=3306
+MYSQL_USER=your_username
+MYSQL_PASSWORD=your_password
+MYSQL_DATABASE=your_database
+MYSQL_CHARSET=utf8mb4
+MYSQL_COLLATION=utf8mb4_unicode_ci
+MYSQL_SQL_MODE=TRADITIONAL
\ No newline at end of file
diff --git a/src/mysql_mcp_server/server.py b/src/mysql_mcp_server/server.py
index 15fcdbd..3b23a26 100644
--- a/src/mysql_mcp_server/server.py
+++ b/src/mysql_mcp_server/server.py
@@ -6,6 +6,9 @@
 from mcp.server import Server
 from mcp.types import Resource, Tool, TextContent
 from pydantic import AnyUrl
+from dotenv import load_dotenv
+
+load_dotenv()
 
 # Configure logging
 logging.basicConfig(