In March 2026, Kevin Keefer enhanced the renovate-bot/googleapis-_-genai-toolbox repository by adding support for the BIGQUERY_IMPERSONATE_SERVICE_ACCOUNT environment variable within the prebuilt BigQuery configuration. This update allowed users to enable service account impersonation without requiring a custom tools file, streamlining setup and improving security for organizations leveraging AI agents. Kevin implemented the solution using YAML and applied his expertise in BigQuery, cloud computing, and DevOps to ensure backward compatibility and maintain existing behavior when the environment variable is unset. He validated the changes through local builds and tests, updated documentation, and ensured code quality with successful linter and test runs.