diff --git a/src/promptforge/cli/commands/run.py b/src/promptforge/cli/commands/run.py
index 024679f..2f54405 100644
--- a/src/promptforge/cli/commands/run.py
+++ b/src/promptforge/cli/commands/run.py
@@ -1,11 +1,13 @@
+"""Run command for executing prompts."""
+
 import asyncio
+from typing import Any, Dict
 import click
-from pathlib import Path
+
 from promptforge.core.prompt import Prompt
 from promptforge.core.template import TemplateEngine
 from promptforge.core.config import get_config
 from promptforge.providers import ProviderFactory
-from promptforge.testing.validator import Validator
 
 
 @click.command()
@@ -33,7 +35,11 @@ def run(ctx, name: str, provider: str, var: tuple, output: str, stream: bool):
 
     template_engine = TemplateEngine()
     try:
-        rendered = template_engine.render(prompt.content, variables, prompt.variables)
+        rendered = template_engine.render(
+            prompt.content,
+            variables,
+            prompt.variables,
+        )
     except Exception as e:
         click.echo(f"Template error: {e}", err=True)
         raise click.Abort()
@@ -42,10 +48,11 @@ def run(ctx, name: str, provider: str, var: tuple, output: str, stream: bool):
     selected_provider = provider or prompt.provider or config.defaults.provider
 
     try:
+        provider_config: Dict[str, Any] = dict(config.providers.get(selected_provider, {}))
         provider_instance = ProviderFactory.create(
             selected_provider,
-            model=config.providers.get(selected_provider, {}).model if selected_provider in config.providers else None,
-            temperature=config.providers.get(selected_provider, {}).temperature if selected_provider in config.providers else 0.7,
+            model=provider_config.get("model") if isinstance(provider_config, dict) else None,
+            temperature=provider_config.get("temperature", 0.7) if isinstance(provider_config, dict) else 0.7,
         )
     except Exception as e:
         click.echo(f"Provider error: {e}", err=True)
@@ -67,18 +74,26 @@ def run(ctx, name: str, provider: str, var: tuple, output: str, stream: bool):
             import json
             click.echo("\n" + json.dumps({"response": response}, indent=2))
 
-    asyncio.run(execute())
+        if prompt.validation_rules:
+            validate_response(prompt, response)
+
+    try:
+        asyncio.run(execute())
+    except Exception as e:
+        click.echo(f"Execution error: {e}", err=True)
+        raise click.Abort()
 
 
 def validate_response(prompt: Prompt, response: str):
+    """Validate response against rules."""
     for rule in prompt.validation_rules:
         if rule.type == "regex":
             import re
             if not re.search(rule.pattern or "", response):
-                click.echo(f"Warning: Response failed regex validation", err=True)
+                click.echo("Warning: Response failed regex validation", err=True)
         elif rule.type == "json":
             try:
                 import json
                 json.loads(response)
             except json.JSONDecodeError:
-                click.echo(f"Warning: Response is not valid JSON", err=True)
\ No newline at end of file
+                click.echo("Warning: Response is not valid JSON", err=True)