GCP: Upgrading a LINE Bot with Vertex AI ADK Tools for Smart Business Cards and Backup Search

Preface In the previous article, we successfully upgraded the LINE business card assistant robot (linebot-namecard-python) from the AI Studio API Key verification mode to the enterprise-grade Google Cloud Vertex AI mechanism, completely freeing us from the 429 quota anxiety. However, the original method of searching for business cards had significant limitations: We had to first fetch all the user's business cards from Firebase, package them into a huge JSON array, and then stuff them into th...