add default config values (#77)

Author: nabuskey

README.md

@@ -58,6 +58,7 @@ graph TB
 - ⚡ [uv](https://docs.astral.sh/uv/getting-started/installation/) package manager
 
 ### 🚀 Setup & Testing
+
 ```bash
 git clone https://github.com/DeepDiagnostix-AI/mcp-apache-spark-history-server.git
 cd mcp-apache-spark-history-server
@@ -66,7 +67,6 @@ cd mcp-apache-spark-history-server
 brew install go-task  # macOS, see https://taskfile.dev/installation/ for others
 
 # Setup and start testing
-task install                    # Install dependencies
 task start-spark-bg            # Start Spark History Server with sample data (default Spark 3.5.5)
 # Or specify a different Spark version:
 # task start-spark-bg spark_version=3.5.2
@@ -79,6 +79,21 @@ task start-inspector-bg       # Start MCP Inspector
 # When done, run `task stop-all`
 ```
 
+If you just want to run the MCP server without cloning the repository:
+
+```bash
+# Run with uv without installing the module
+uvx --from mcp-apache-spark-history-server  spark-mcp
+
+# OR run with pip and python. Use of venv is highly encouraged.
+python3 -m venv spark-mcp && source spark-mcp/bin/activate
+pip install mcp-apache-spark-history-server
+python3 -m spark_history_mcp.core.main
+# Deactivate venv
+deactivate
+```
+
+
 ### 📊 Sample Data
 The repository includes real Spark event logs for testing:
 - `spark-bcec39f6201b42b9925124595baad260` - ✅ Successful ETL job

src/spark_history_mcp/config/config.py

@@ -43,8 +43,10 @@ class McpConfig(BaseSettings):
 class Config(BaseSettings):
     """Configuration for the Spark client."""
 
-    servers: Dict[str, ServerConfig]
-    mcp: Optional[McpConfig] = None
+    servers: Dict[str, ServerConfig] = {
+        "local": ServerConfig(url="http://localhost:18080", default=True),
+    }
+    mcp: Optional[McpConfig] = McpConfig(transports=["streamable-http"])
     model_config = SettingsConfigDict(
         env_prefix="SHS_",
         env_nested_delimiter="_",
@@ -56,7 +58,7 @@ class Config(BaseSettings):
     def from_file(cls, file_path: str) -> "Config":
         """Load configuration from a YAML file."""
         if not os.path.exists(file_path):
-            raise FileNotFoundError(f"Config file not found: {file_path}")
+            return Config()
 
         with open(file_path, "r") as f:
             config_data = yaml.safe_load(f)