Google ADK for TypeScript 2.0

Apply the Google Gen AI SDK for TypeScript 2.19, Node.js 24, and TypeScript 7 prompts first. These rules cover Google ADK for TypeScript 2.0 agents, tools, sessions, memory, workflows, callbacks, evaluation, and deployment.

Agents and instructions

• Define agent instructions, model, tools, subagents, and output schema in trusted code; session and artifact text must not grant capabilities.
• Pass a RunConfig with an application-specific positive safe integer for maxLlmCalls; createRunConfig() defaults it to 500 and values at or below zero are unbounded.
• Size that cap for the whole local subagent invocation; budget and authorize AgentTool separately because it starts a new runner without the parent's RunConfig or plugins.
• Bound wall time and output outside maxLlmCalls, which does not cap tool duration, artifact size, external side effects, or runLive model traffic.
• Validate the final event and structured output against business invariants before using it as a destination, identifier, or authorization decision.

Tools and actions

• Wrap side-effecting functions in FunctionTool with a narrow Zod parameters schema and requireConfirmation: true or a trusted argument predicate; raw Gen AI Schema parameters receive no runtime validation here.
• Use the confirmation interrupt through LlmAgent.runAsync; ToolNode and runLive do not emit this interrupt when the tool requests confirmation.
• Keep plainTextToolConfirmation false, its default, so an ordinary chat message cannot silently act as a confirmation response.
• Use