Deterministic flow with mixture of agents and tools

[ninjapc90]

Can we define a deterministic flow like sequential execution which involves a mix of agent and tools, without having to wrap the tool in an agent?

[adk-bot]

Response from ADK Answering Agent (experimental, answer may be inaccurate)

TLDR: To define a deterministic flow with a mix of agents and tools, you must wrap the tools in agents. The SequentialAgent executes a list of sub-agents, so any tool you want to include must be presented as an agent.

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Hello! That's an excellent question about structuring deterministic workflows in ADK.

In the ADK framework, the primary building blocks for workflows are agents. [2] For creating deterministic, sequential executions, ADK provides the SequentialAgent. This type of agent, known as a workflow agent, is specifically designed to orchestrate and execute a list of other agents (referred to as sub_agents) in a predefined order. [1, 3]

The SequentialAgent executes its sub_agents one after another as listed, ensuring a predictable and deterministic flow. [2] Because of this agent-centric design, you cannot place a raw tool directly into the execution sequence of a SequentialAgent alongside other agents.

To achieve your goal, you need to wrap your tool in a simple agent. This wrapper agent's sole responsibility would be to call the tool. This approach maintains the consistent execution model that ADK is built upon, ensuring that every step in your workflow conforms to the agent interface.

By wrapping the tool, you can seamlessly integrate it into a SequentialAgent and create the deterministic, mixed workflow you're looking for.

[1] Workflow Agents
[2] SequentialAgent
[3] About ADK