Add debug info to help find API key secret

app.py

@@ -97,10 +97,12 @@ def analyze_prompt(prompt_text):
 def generate_response(api_key, system_prompt, history, user_message):
     """Generate a response using Claude API."""
     # Use provided key or fall back to environment variable
-    key_to_use = api_key.strip() if api_key else os.environ.get("ANTHROPIC_API_KEY", "")
+    key_to_use = api_key.strip() if api_key else ""
+    if not key_to_use:
+        key_to_use, _ = get_api_key_from_env()
 
     if not key_to_use:
-        return "API key not found. Please enter your Anthropic API key above, or set ANTHROPIC_API_KEY in Space secrets."
+        return "API key not found. Please enter your Anthropic API key above, or set ANTHROPIC_API_KEY in Space Settings > Repository secrets."
     if not system_prompt:
         return "Please enter a system prompt first (use the Prompt Editor tab)."
     if not user_message:
@@ -212,13 +214,37 @@ Generated: {timestamp}
 # Get API key from environment if available
 default_key = os.environ.get("ANTHROPIC_API_KEY", "")
 
+# Debug: Check for common secret name variations
+def get_api_key_from_env():
+    """Try multiple possible secret names."""
+    possible_names = [
+        "ANTHROPIC_API_KEY",
+        "anthropic_api_key",
+        "ANTHROPIC_KEY",
+        "API_KEY",
+    ]
+    for name in possible_names:
+        key = os.environ.get(name, "")
+        if key:
+            return key, name
+    return "", None
+
 
 def test_api_key(api_key_input):
     """Test if the API key works."""
-    key_to_use = api_key_input.strip() if api_key_input else os.environ.get("ANTHROPIC_API_KEY", "")
+    key_to_use = api_key_input.strip() if api_key_input else ""
 
+    # If no key in textbox, try environment
+    source = "textbox"
     if not key_to_use:
-        return "No API key found. Enter a key above or add ANTHROPIC_API_KEY to Space secrets."
+        key_to_use, found_name = get_api_key_from_env()
+        source = f"env:{found_name}" if found_name else "none"
+
+    if not key_to_use:
+        # List what env vars exist (for debugging)
+        env_keys = [k for k in os.environ.keys() if 'KEY' in k.upper() or 'ANTHROPIC' in k.upper()]
+        hint = f" Found env vars with KEY/ANTHROPIC: {env_keys}" if env_keys else " No matching env vars found."
+        return f"No API key found.{hint} Add ANTHROPIC_API_KEY to Space Settings > Repository secrets."
 
     try:
         client = anthropic.Anthropic(api_key=key_to_use)
@@ -228,11 +254,11 @@ def test_api_key(api_key_input):
             max_tokens=10,
             messages=[{"role": "user", "content": "Say 'OK'"}]
         )
-        return "API key is valid and working."
+        return f"API key valid (source: {source})"
     except anthropic.AuthenticationError:
-        return "Invalid API key. Please check your key."
+        return f"Invalid API key (source: {source}). Please check your key."
     except Exception as e:
-        return f"Error testing key: {str(e)}"
+        return f"Error: {str(e)}"
 
 
 # Build the interface