# Make your AI agents predictable.

Product: Flow Builder

Assistable Flow Builder is a visual editor for AI conversation workflows. Connect conversation steps, conditions, extracted values and tools, then test and publish the flow an assistant should follow.

Define the critical steps, connect the right actions and plan for exceptions. Test the paths before publishing a flow your team can understand and improve.

## Put structure around the moments that matter.

### Give every step a defined job

Break a broad instruction into focused steps. Confirm the service and preferred day before moving to availability, so your team can see what each part of the conversation is meant to do.

### Make the decision explicit

Use conversational conditions for intent. Use Logic to compare values already collected, with ordered branches and an Else path for missing information.

### Put real system data behind the answer

Connect the calendar tool to the step that needs availability. Collect its required context first, then design separate paths for returned information and an unavailable result.

### Design the fallback before you need it

Give unclear answers, unavailable tools and requests for a person somewhere to go. Connect human help to a configured transfer tool, with a plan for an unanswered destination.

## Know the path before you publish.

### Test the branches

Try realistic requests against your draft, including appointment changes and requests for a person.

### Choose what goes live

Keep working changes in a draft. Review a saved version, then publish the flow your assistant will use.

### Inspect the path taken

Inspect the active step, its transition, and tool inputs and outputs inside the test conversation.

### Illustrative branch tests

- **New appointment** — “I'd like to arrange a service appointment.” The customer wants to book a new appointment. Destination: Qualify the request. Collect the service and preferred day before checking availability.

- **Change a booking** — “Can I move my appointment to another day?” The customer wants to change an existing appointment. Destination: Find the appointment. Identify the existing appointment before offering a change.

- **Human help** — “Could I speak to someone on your team?” The customer asks to speak with a person. Destination: Human handoff. Explain the handoff and use the configured transfer tool.

## From critical workflow to controlled release.

### Design the critical paths

Map the decisions that matter. Define what each step collects, which actions it can take and where exceptions go.

### Test the expected and unexpected

Try complete requests, missing details and unclear intent. Review the chosen paths, then verify tools on the actual channel.

### Publish the reviewed version

Keep edits in a draft until your team is ready. Publish the flow, then select it in the assistant’s LLM settings.

## Build reliability around the flow.

- [Call Tracing](https://www.assistable.ai/product/call-tracing): Review recorded turns and tool activity when a call needs investigation.

- [Tooling](https://www.assistable.ai/product/tooling): Define the inputs and actions each step can use, then inspect the result.

- [Observations](https://www.assistable.ai/product/observations): Flag conversations against your rules so exceptions reach the right people.

- [Knowledge & RAG](https://www.assistable.ai/product/rag): Ground answers in selected business sources instead of relying on the model alone.

## Flow Builder guides

- [Build and publish your first flow](https://docs.assistable.ai/v3/guides/flows/first-flow)

- [Build and refine with Ask Able](https://www.assistable.ai/blog/ask-able-ai-agent-builder)

## Flow Builder use cases by team

- [For Agencies — Follow up while the lead is interested](https://www.assistable.ai/solutions/agencies)

- [For SMB — Put the booking in your calendar](https://www.assistable.ai/solutions/smb)

- [For BPOs & Call Centers — Transfer the caller with context](https://www.assistable.ai/solutions/bpos-and-call-centers)

- [For Enterprises — Define when a support case can close](https://www.assistable.ai/solutions/enterprises)

- [For Governments & Municipalities — Route the request to public works](https://www.assistable.ai/solutions/governments-and-municipalities)

- [For Hospital Systems — Capture the set, room, and required time](https://www.assistable.ai/solutions/hospital-systems)

- [For MSPs — Deploy the next client from a tested flow](https://www.assistable.ai/solutions/msps)

## Flow Builder questions.

### How does a flow make an AI agent more predictable?

A flow gives each step a defined purpose, available tools and explicit paths. Your team can see the process, test its branches and review the recorded conversation. That makes behavior easier to control and investigate; it does not make every model response or external system infallible.

### Which decisions are deterministic, and which use an LLM?

A Logic node can evaluate configured rules against variables. Conversation paths can use a model to interpret a customer’s words. Use rules for business decisions with exact criteria, and model-based conditions where intent needs interpretation. Test both, especially when information is missing or ambiguous.

### What happens when a tool cannot complete an action?

Define the required inputs, inspect the returned result and configure what happens when the request cannot be completed. The right response might be another question, a different path or a human handoff. Do not treat an attempted tool call as a confirmed booking, payment or update.

### Can a person take over when the flow reaches its limit?

Yes. For a live phone call, use a configured transfer tool and the correct destination. Make the escalation condition part of the flow, then test availability, unanswered calls and the customer experience. Handoff behavior depends on the channel and transfer setup.

### How should we test a flow before customers use it?

Try expected requests, unclear intent, missing details and unavailable services in the editor. Inspect the chosen path and available tool records. Then test the assigned assistant on the actual phone or website channel. An editor conversation alone does not verify audio, routing, embedding or every external action.

### Can we change or restore a published flow?

Work on the draft, review the changes and publish when your team is ready to update the live flow. Version History can restore an earlier design to the editor. Review and publish that restored design as needed; restoring an editor version is not the same as confirming a live rollback.

### Can we use the flow on both calls and website chat?

Publish the flow, then select it in the assistant’s LLM settings. For calls, connect that assistant to the intended phone configuration. For website chat, connect it to the widget. Validate each channel separately: voice transfers, audio and website interactions do not have identical requirements.

[Talk to sales](https://www.assistable.ai/contact)

Source: https://www.assistable.ai/product/flow-builder