> ## Documentation Index > Fetch the complete documentation index at: https://docs.beam.ai/llms.txt > Use this file to discover all available pages before exploring further. # Selecting Tools > Choose AI, Integration, Controls, or Utilities steps for an agent Flow. Tools determine what a node does in a Flow. The current Flow canvas begins with a Trigger and can contain tool and LLM-based Condition nodes. The current Flow canvas showing a Trigger, a tool node, and an LLM-based Condition node.

Choose a step type

Use the **Add step** modal to choose one of four categories: **AI**, **Integration**, **Controls**, or **Utilities**. The modal is the current entry point for adding Flow steps. | If the Flow needs to... | Choose | | ------------------------------------------- | --------------- | | Perform model-driven work from instructions | **AI** | | Interact with a connected external service | **Integration** | | Control Flow logic or timing | **Controls** | | Run a built-in helper | **Utilities** | ### AI Use **AI** to describe the work a prompt step should perform. Prompt steps can also use tools when they need to call supported capabilities as part of that work. ### Integration Use **Integration** to browse connected-service actions or create a custom integration. **Trigger Agent Task** is available in **Integration → Beam Tools**. ### Controls Use **Controls** to direct execution without selecting an AI or service action: * **Loop** repeats steps for a collection or condition. * **Condition** routes execution based on a condition. * **Wait** pauses the Flow before it continues. * **Exit** ends the current Flow path. ### Utilities Use **Utilities** for built-in helper steps, such as file and document processing. Available utilities can change with the workspace, so use the modal as the source of truth.

Configure a tool node

1. Open the agent's **Flow**. 2. Select the tool node you want to configure. 3. Use the node sidebar to review **Parameters**, **Settings**, and **Evaluation**. 4. In **Parameters**, configure the node's input variables, model, output variables, and integrations as needed. 5. Choose a fill method for every input variable. The exact available inputs depend on the selected tool. See [Variable Fill](/02-building-agents/agent-configuration/variables-state/variables-state) for the current fill methods.

Use an integration

Use an **Integration** step when a node needs an external service. First, add or review the workspace connection from **Integrations**, then configure the integration section of the node's **Parameters**. See [Integrations](/02-building-agents/agent-configuration/integrations/integrations) for the current gallery, connection entry point, and workspace Connections tab.

Use a custom integration

Select **Create custom integration** from the workspace **Integrations** page when the gallery does not contain the service you need. See [Custom Integrations](/02-building-agents/advanced-patterns/custom-integrations/custom-integrations) for the current builder entry point and verified controls. The node sidebar includes an **Evaluation** tab and a **Settings** tab. Use **Settings → Consent required** when a task must pause for approval before the selected node proceeds. For the verified evaluation controls, see [Evaluation Framework](/04-observability-analytics/evaluation-framework/evaluation-framework). For consent behavior, see [Automation Modes](/03-running-operations/task-management/automation-modes/automation-modes).

Next steps

Build and inspect the current Flow canvas. Browse integrations and add workspace connections. Supply values to each node input.