Troubleshooting an AI Coding CLI: From Environment Checks to Team Standardization

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This guide explains how to troubleshoot an AI-powered coding command-line tool, from checking the runtime, network, proxy, system time, and Git installation to choosing a safe installation method and verifying that the correct executable is being used. It also covers user-level npm installation and basic precautions for script-based installers.

1. Define the Goal and Scope

AI coding command-line tools let developers access model capabilities directly from a terminal for tasks such as reading code, suggesting refactors, and completing tests. Their operation generally depends on three prerequisites: a working script runtime, reliable network access to the model service, and a version control tool that can read repository content. Most installation failures occur because at least one of these prerequisites is missing; the installation command itself is often not the problem.

The examples in this article use a tool distributed through Node.js and npm. Before installing, check the tool’s official documentation for its distribution method and minimum version requirements. If the tool is distributed as a binary download or a container image, replace the package manager command with the command provided in the documentation. The same inspection and troubleshooting approach still applies.

2. Pre-Installation Checklist

Complete the following four checks in order. Each one has a clear pass condition.

1. Verify the Runtime Version

Run:

node -v
npm -v

Confirm that both versions meet the minimum requirements specified in the tool’s documentation. If either command is unavailable, install a supported LTS release first.

After installation, close all terminal windows and open a new one before checking again. Existing terminal sessions retain the environment variables from before the installation, which can lead to misleading results.

2. Verify Network Connectivity

Run the following commands in sequence:

Resolve the registry hostname:
```
nslookup registry.npmjs.org
```
On Linux, you can also use:
```
getent hosts registry.npmjs.org
```
The check passes if the command returns an IP address.
Test the HTTPS request:
```
curl -I https://registry.npmjs.org
```
The check passes if the status line begins with HTTP/2 200 or HTTP/1.1 200.

Then replace the registry hostname in the commands above with the model service hostname listed in the tool’s documentation and run the tests again.

3. Check the Proxy and System Time

If your network requires a proxy, confirm that the proxy variables are available in the terminal.

On Linux and macOS, run:

echo $HTTPS_PROXY

In PowerShell, run:

echo $env:HTTPS_PROXY

If the variable is empty but websites work in a browser, the proxy may only be configured in the graphical interface. Add it to the shell configuration file, such as ~/.zshrc or ~/.bashrc, or configure it as a system environment variable.

If the proxy URL contains a username and password, do not place it in a project repository or script.

An incorrect system clock can cause TLS handshakes to fail. On Linux, run:

timedatectl status

Confirm that System clock synchronized is set to yes.

On Windows, run:

w32tm /query /status

Confirm that a valid synchronization source is available.

4. Verify the Version Control Tool

Run:

git --version

A returned version number indicates that the check has passed. The tool may depend on Git to read branches, diffs, and commit history.

If the command is unavailable, install an official Git distribution and confirm that its installation directory has been added to PATH.

3. Choose an Installation Method and Verify the Entry Point

1. Prefer a User-Level Global Installation

A global installation allows the command to be called from any directory. Installing into a system directory usually requires administrator privileges and can cause ownership problems during later upgrades or configuration changes.

A more reliable approach is to place the npm global directory under the current user’s home directory:

npm config get prefix
npm config set prefix "$HOME/.npm-global"

Then append the following line to your shell configuration file:

export PATH="$HOME/.npm-global/bin:$PATH"

Open a new terminal afterward.

On Windows, npm’s default global directory is normally located under the user profile and usually does not need to be changed. Use the following command to confirm that the path belongs to the current user:

npm config get prefix

Do not use sudo when installing the package:

npm install -g <package-name>

Replace <package-name> with the package name specified in the documentation.

After installation, run both of the following checks:

<command-name> --version: a version number confirms that the command entry point was registered successfully.
npm ls -g --depth=0: lists global packages so that you can verify the package name and version.

2. Confirm That the Command Resolves to the New Version

If the version returned by --version does not match the version you installed, multiple installation locations may exist on the system.