Pre-checks for GitHub Dependabot Alerts

This skill performs common pre-checks required for all Dependabot alert operations:

1. Verifies the $GITHUB_DEPENDABOT_PAT environment variable is set
2. Extracts GitHub account and repository name from local git remote

Pre-checks: Step Check Required Env Vars

Check if the $GITHUB_DEPENDABOT_PAT environment variable is set without printing its value:

if [ -z "$GITHUB_DEPENDABOT_PAT" ]; then
  echo "❌ GITHUB_DEPENDABOT_PAT environment variable is not set"
  echo "Please set this environment variable with a valid GitHub Personal Access Token that has 'security_events' scope"
  exit 1
fi
echo "✅ GITHUB_DEPENDABOT_PAT is configured"

If the variable is empty or not set:

• Stop execution immediately
• Inform the user they need to set this environment variable with a valid GitHub Personal Access Token that has security_events scope

Pre-checks: Step Extract GitHub Repository Info

Extract the GitHub account and repository name from the git remote URL:

git remote get-url origin

Parse the output to extract the account and repo name. The URL will typically be in one of these formats:

• HTTPS: https://github.com/ACCOUNT/REPO.git
• SSH: git@github.com:ACCOUNT/REPO.git

Parsing logic:

• For HTTPS URLs: Extract from github.com/ to .git
• For SSH URLs: Extract from : to .git
• Split by / to get ACCOUNT and REPO
• Remove .git suffix if present

If the command fails or the URL is not a GitHub URL:

• Stop execution with error message: "Could not extract GitHub repository information from git remote. Please ensure you're in a git repository with a GitHub remote."

Pre-checks: Step Return Values

Store and return the following values for use by the calling command:

• ACCOUNT: GitHub account/organization name
• REPO: Repository name

Display to the user:

✓ Prerequisites check passed
✓ Repository: ACCOUNT/REPO

These values will be available for subsequent operations that require GitHub API calls.