Building AI Agents with the GO Agent Development Kit (ADK) — 2026 Edition (v2)

Summary of 2026 Updates (v2)

This updated edition incorporates several key architectural improvements, production hardening, and dependency upgrades over the initial release:

Go ADK Core Upgrade: Upgraded from v0.2.0 to v1.5.1 (google.golang.org/adk), delivering enhanced model context handling and agent execution pipelines.

Google GenAI SDK Upgrade: Upgraded to v1.65.0 (google.golang.org/genai) with native Vertex AI authentication auto-detection.

Go Toolchain & Module Directives: Updated runtime environment to Go 1.26.3 with go 1.25.0 module directives across all sub-modules.