Agent Development Kit (ADK) 2.12.0 released
A feature release that improves performance in long sessions, adds tool output filtering, workflow approval controls, and custom service account deployment support.
What changed in 2.12.0
- First model request time reduced by 40% in long sessions.
- New
after_tool_callbackoption to intercept and filter tool outputs before sending to the model. - New
require_confirmationoption in workflows to require human approval before executing workflow nodes. - Deploy agents to Agent Engine using custom service accounts for enhanced security.
- Python 3.15 support added for installation and execution.
Summarised by AgentGid from Google's official release notes on GitHub, as reported there; read the original before relying on it. Price, status and release dates come from our daily data.
Agent Development Kit (ADK) at a glance
| What it is | Google's open-source, code-first toolkit for building, evaluating and deploying AI agents, with SDKs for Python, TypeScript, Go, Java and Kotlin. |
|---|---|
| Latest version | 2.14.0, Nov 7, 2026. This page is about an earlier release. |
| Release pace | 3 stable releases in the last 30 days; 2.12.0 came 11 days after the previous one |
| Price | Free (OSS). Agent Development Kit (ADK) is open source and free to use; you pay only for the models and infrastructure it runs on. (checked Oct 14, 2026) |
| Downloads, last 7 days | 2.9M up 4.0% |
| Gid Score | 54 #9 in Agent frameworks and SDKs |
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