Lisn talks to your customers, wherever they are.

One agent on your website today, and on your phone lines next. It talks or chats with visitors, answers from what your business actually offers, books, and hands over to a person, in English and Arabic. It practises against simulated customers before it talks to real ones.

Request early access →Try it live

What Lisn does

On your website

Visitors talk or type, and Lisn answers in their language. It learns your services, prices, hours, and FAQs from your own website, sticks to them, and says so when it does not know. It drops in with one script tag.

From our embeddable demo agent

Try it in the playground →

On the phone, next

Coming next: inbound and outbound calls on the numbers you already have. The same agent that talks on your website will answer your lines, built on the voice platform we have already run on real telephony.

Coming next, from our production voice platform

One integration, any carrier →

Gets it done

Lisn checks availability and books through your booking tool, takes callbacks at the time the customer gives, and sends you the lead with a summary of the conversation. It hands over to a person during working hours, and it does not promise what it should not.

Tool calls during a live call

Giving a voice agent hands →

Practises first

Before it talks to your customers, other agents play them: impatient, confused, switching language mid-sentence. They talk to it through the same stack your customers will, and every failure becomes a fix.

From our simulation suite

Test your AI with more AI →

How Lisn goes live

Five steps from connecting your channels to an agent that keeps improving on its own.

Using a coding agent? Paste groundstatefoundry.com/skill into it, and it installs Lisn in minutes.

01ConnectPaste groundstatefoundry.com/skill into your coding agent (Claude Code, Cursor and others) and it installs Lisn in minutes. Or we set it up for you.
02TeachLisn learns your services, prices, hours, and FAQs from your own website. Add the answers your best people give.
03PractiseLisn talks to simulated customers first, and every conversation that goes wrong becomes a fix.
04Go liveIt starts answering real visitors and callers, and hands over to a person when it should.
05ImproveIt keeps practising against new situations, so it gets better every week.

The research inside it

Lisn is built from systems we have already run in production, and from the lab work that made them better. These are the pieces that went into it.

Voice & Conversational AIThree Seconds of SilenceA caller says hello and hears nothing back, and that small dead pause is where most voice AI quietly loses people.Voice & Conversational AICutting the Pause Before Your Agent SpeaksA phone agent says the same lines over and over, so we stopped paying to generate them twice and the pause got shorter.Voice & Conversational AICascade or Speech to SpeechTwo ways to build a phone agent, and a plain account of when to chain three models and when to hand the whole conversation to one.Voice & Conversational AIGiving a Voice Agent HandsA voice agent that can only talk is a very polite dead end, so the real work is letting it book the slot and send the message while the caller is still on the line.Voice & Conversational AIGuardrails Over PromptsA business owner's first question about an AI that answers the phone is not what it can do, it is what it will never do, and that question deserves a better answer than a paragraph of instructions.Voice & Conversational AITwo People, Two Languages, One CallTwo people who share no language get on an ordinary phone call, and each hears the other in their own tongue, which turns out to be less about clever translation and more about how you split the call.Agent Simulation & EvaluationTest Your AI With More AIWaiting for real users to find the failure is a terrible test plan, so we built agents that call each other and break the system on purpose first.Agent Simulation & EvaluationGrading the Agent BlindAn autonomous agent that grades its own homework will always pass, so I built a company with a hidden answer key and scored the agent against a truth it never sees.

Put Lisn where your customers already are.

We are onboarding a small group of early teams. Tell us where your customers reach you, and we will set Lisn up there first.

Request early access →