Getting started
Sign up, build a voice agent, and take your first call in thirty minutes.
Sign up, build an agent, and take a real call. No coding required. Set aside about thirty minutes.
Before you start
- Have your phone handy. Sign-up verifies your mobile by SMS.
- If you want to personalise the agent with information about your business, have your website URL ready.
1. Sign up
Create an account and you land in a workspace. Everything you build lives here.
2. Build your agent
Sign-up runs a wizard that builds your first agent. It asks about your business, verifies your phone, attaches tools, and rings you so you hear the agent on a real line. You can add a card and go live at the end, or come back to those later.
Open the agent afterwards. Three sections matter most for a first build:
- Prompt: your agent's persona and rules. Every agent
ships with a starter prompt. Swap the
[square brackets]for your business and tighten from there. - Voice: how the agent sounds. Pick one and listen before you publish.
- Model: we recommend the default, Claude Haiku 4.5 (Fast tier).
3. Add a tool
A tool is how the agent does real work instead of just talking: look up an order, search a knowledge base, transfer to a human, or end the call.
Open Tools and add one. Five ways to create a tool:
- Prebuilt: ready-made actions like Transfer to a human or End the call. See Builtin tools.
- Plugin: runs on our infrastructure, like an address check.
- App: connect an app via Connected apps.
- Custom API: call your own HTTP endpoint. See Tools for parameters, variables, secrets and mocks.
- From a website: point at a URL and it wires up a matching lookup tool.
Tool descriptions are the lever
If the agent calls a tool at the wrong time, or never calls it, fix the description before you touch the prompt.
4. Test it
Open the Test panel and have the conversation you expect a real caller to have. Then try to break it: mumble, change your mind, ask something out of scope.
Iterate until it behaves every time, not most of the time. Test calls are free.
For automated grading, see Evals.
5. Publish
Your edits live on a draft. Publishing promotes it to the live version callers reach. The validator checks for problems first and blocks anything that would break a call.
6. Get a number
Phone numbers belong to the workspace. Buy one under workspace settings, Phone numbers, then assign it to your agent.
7. Take a call
Call the number. After the call, the transcript shows what was said and which tools ran.
That is the loop: read the calls that went wrong, tighten the prompt or a tool description, publish, repeat.
Where to next
- Core concepts: the six ideas the platform is built on.
- Hearing: how the agent listens and takes turns.
- Knowledge base: give the agent facts to draw on.
- Billing: how calls are metered and what numbers cost.