diff --git a/.gemini/commands/step_by_step.toml b/.gemini/commands/step_by_step.toml
new file mode 100644
index 0000000..ae33a71
--- /dev/null
+++ b/.gemini/commands/step_by_step.toml
@@ -0,0 +1,23 @@
+description = "Presents a response as a step by step process for the user to follow."
+prompt = """
+# Task
+
+Break down the user's request into a clear, step-by-step process.
+
+## Context
+User input: {{args}}
+
+## Instructions
+
+1.  **Analyze** the user's request carefully.
+2.  **Structure** your response as a clear, numbered list of steps.
+3.  **Actionable Steps**: Ensure each step is a direct action the user can take.
+4.  **Logical Flow**: The steps should follow a logical chronological or dependency-based order.
+5.  **Headers**: Use headers to separate distinct phases if the process is complex.
+6.  **Verification**: Include a final step or section on how to verify the task is complete, if applicable.
+
+## Format
+1. Step 1
+2. Step 2
+...
+"""
diff --git a/ChangeLog b/ChangeLog
index e8f0e24..9b7e949 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,10 +1,12 @@
-* 1.0.0
-- Release of verion 1.0
+* 1.4.0
+- Modified ChangeLog so changes are listed in reverse chronological order.
+- Added step_by_step custom command.
 
-* 1.1.0
-- Added support for PHP, Ruby, Java, and C#.
-- Find latest verion of the API and prompt user whether to use this version.
-- Modified setup.sh to clone copies of the client libraries.
+* 1.3.0
+- Added explain command.
+- Placed client libraries in a sub-directory of the project directory.
+- Updated setup and update scripts.
+- Added constraint to GEMINI.md to never modify files in api_examples.
 
 * 1.2.0
 - Updated README.md for clarity
@@ -15,8 +17,10 @@
 - Modified logic in setup and update scripts.
 - Added tests for setup and update scripts.
 
-* 1.3.0
-- Added explain command.
-- Placed client libraries in a sub-directory of the project directory.
-- Updated setup and update scripts.
-- Added constraint to GEMINI.md to never modify files in api_examples.
+* 1.1.0
+- Added support for PHP, Ruby, Java, and C#.
+- Find latest verion of the API and prompt user whether to use this version.
+- Modified setup.sh to clone copies of the client libraries.
+
+* 1.0.0
+- Release of verion 1.0
diff --git a/README.md b/README.md
index 8e4a7c5..a5c3047 100644
--- a/README.md
+++ b/README.md
@@ -119,6 +119,22 @@ b.  **Set Context in Gemini:** The `gemini` command must be run from the root of
     > ... (results displayed) ...
     > "Save the results to csv"
 
+### Customm Commands
+
+There is a bug in `/help`. It does not list custom commands defined in
+`.gemini/commands` under the project directory.
+
+This is a partial list of custom commands:
+
+* `/explain` - Format the response from the model to be more readable.
+* `/step_by_step` - Format the response as series of steps. Show the model's thinking process. This is useful for debugging.
+
+To see the full list, from within the Assistant, `ls -l .gemini/commands`. This
+will provide a list of the .toml files that define the commands. For example, `explain.toml`
+can be executed as `/explain <your request>`.
+
+Or, you can execute  `run list_commands.py` from within the Assistant to see the full list with descriptions.
+
 ## Directory Structure
 
 *   `google-ads-api-developer-assistant/`: Root directory. **Launch `gemini` from here.**
diff --git a/list_commands.py b/list_commands.py
new file mode 100644
index 0000000..a1b5477
--- /dev/null
+++ b/list_commands.py
@@ -0,0 +1,42 @@
+import pathlib
+import tomllib
+import sys
+
+def main():
+    commands_dir = pathlib.Path(".gemini/commands")
+    
+    if not commands_dir.exists():
+        print(f"Directory not found: {commands_dir.absolute()}")
+        sys.exit(1)
+
+    files = sorted(commands_dir.glob("*.toml"))
+    
+    if not files:
+        print("No .toml files found in .gemini/commands")
+        return
+
+    # Collect all commands and descriptions
+    commands = []
+    for file_path in files:
+        try:
+            with file_path.open("rb") as f:
+                data = tomllib.load(f)
+                description = data.get("description", "No description found")
+                commands.append((file_path.stem, description))
+        except Exception as e:
+            print(f"Error reading {file_path.name}: {e}", file=sys.stderr)
+
+    if not commands:
+        return
+
+    # Calculate max length for alignment
+    max_len = max(len(cmd[0]) for cmd in commands)
+    
+    # Print aligned output
+    # We add a few spaces gap between command and description
+    gap = 3
+    for name, description in commands:
+        print(f"{name:<{max_len + gap}}{description}")
+
+if __name__ == "__main__":
+    main()